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967 lines
40 KiB
967 lines
40 KiB
using NPOI.HPSF;
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using NPOI.HSSF.UserModel;
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using NPOI.SS.UserModel;
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using NPOI.XSSF.UserModel;
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using System.Data;
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using System.Text;
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namespace Tiobon.Core.Common.Helper;
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public class NPOIHelper
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{
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#region DataTable 导出到 Excel 的 MemoryStream
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/// <summary>
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/// DataTable 导出到 Excel 的 MemoryStream
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/// </summary>
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/// <param name="dtSource">源 DataTable</param>
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/// <param name="strHeaderText">表头文本 空值未不要表头标题</param>
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/// <returns></returns>
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public static MemoryStream GenerateExportExcel(DataTable dtSource, string strHeaderText, string sheetName, string strFileName = null)
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{
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IWorkbook workbook = new XSSFWorkbook();
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ISheet sheet;
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if (!File.Exists(strFileName))
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{
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sheet = workbook.CreateSheet(sheetName);
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}
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else
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{
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using (FileStream file = new FileStream(strFileName, FileMode.Open, FileAccess.Read))
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{
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//hssfworkbook = new HSSFWorkbook(file);
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//hssfworkbook = new XSSFWorkbook(file);
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workbook = WorkbookFactory.Create(file);
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}
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if (workbook == null) throw new Exception("未能加载excel");
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sheet = workbook.CreateSheet(sheetName);
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}
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#region 文件属性
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DocumentSummaryInformation dsi = PropertySetFactory.CreateDocumentSummaryInformation();
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dsi.Company = "EUCloud";
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//workbook.DocumentSummaryInformation = dsi;
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SummaryInformation si = PropertySetFactory.CreateSummaryInformation();
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si.Author = "EUCloud";
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si.ApplicationName = "EUCloud";
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si.LastAuthor = "EUCloud";
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si.Comments = "";
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si.Title = "";
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si.Subject = "";
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si.CreateDateTime = DateTime.Now;
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//workbook.SummaryInformation = si;
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#endregion
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ICellStyle dateStyle = workbook.CreateCellStyle();
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IDataFormat format = workbook.CreateDataFormat();
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dateStyle.DataFormat = format.GetFormat("yyyy-mm-dd");
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ICellStyle datetimeStyle = workbook.CreateCellStyle();
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datetimeStyle.DataFormat = format.GetFormat("yyyy-mm-dd hh:mm");
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ICellStyle datetimesStyle = workbook.CreateCellStyle();
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datetimesStyle.DataFormat = format.GetFormat("yyyy-mm-dd hh:mm:ss");
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int[] arrColWidth = new int[dtSource.Columns.Count];
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foreach (DataColumn item in dtSource.Columns)
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{
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arrColWidth[item.Ordinal] = Encoding.GetEncoding("utf-8").GetBytes(item.ColumnName.ToString()).Length;
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}
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for (int i = 0; i < dtSource.Rows.Count; i++)
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{
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for (int j = 0; j < dtSource.Columns.Count; j++)
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{
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int intTemp = Encoding.GetEncoding("utf-8").GetBytes(dtSource.Rows[i][j].ToString()).Length;
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if (intTemp > arrColWidth[j])
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{
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arrColWidth[j] = intTemp;
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}
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}
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}
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int rowIndex = 0;
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int intTop = 0;
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int HeightInPoints = 40;
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foreach (DataRow row in dtSource.Rows)
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{
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#region 新建表、填充表头、填充列头，样式
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if (rowIndex == 655350 || rowIndex == 0)
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{
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if (rowIndex != 0)
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{
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sheet = workbook.CreateSheet();
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}
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intTop = 0;
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#region 表头及样式
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{
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if (!string.IsNullOrWhiteSpace(strHeaderText) && strHeaderText.Length > 0)
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{
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#region 标题单元格样式
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ICellStyle titleStyle = workbook.CreateCellStyle();
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titleStyle.Alignment = HorizontalAlignment.Center; //居中
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titleStyle.VerticalAlignment = VerticalAlignment.Center;//垂直居中
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titleStyle.WrapText = true;//自动换行
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// 边框
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titleStyle.BorderBottom = BorderStyle.Thin;
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titleStyle.BorderLeft = BorderStyle.None;
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titleStyle.BorderRight = BorderStyle.None;
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titleStyle.BorderTop = BorderStyle.None;
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IFont font = workbook.CreateFont();
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font.FontHeightInPoints = (short)14;
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font.FontName = "宋体";
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font.IsBold = true;
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titleStyle.SetFont(font);
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#endregion
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IRow headerRow = sheet.CreateRow(intTop);
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intTop += 1;
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headerRow.HeightInPoints = 25;
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headerRow.CreateCell(0).SetCellValue(strHeaderText);
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//ICellStyle headStyle = workbook.CreateCellStyle();
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//headStyle.Alignment = HorizontalAlignment.Center;
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//IFont font = workbook.CreateFont();
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//font.FontHeightInPoints = 20;
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//font.IsBold = true;
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//headStyle.SetFont(font);
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headerRow.GetCell(0).CellStyle = titleStyle;
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// 设置行高
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headerRow.HeightInPoints = 30;
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sheet.AddMergedRegion(new NPOI.SS.Util.CellRangeAddress(0, 0, 0, dtSource.Columns.Count - 1));
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}
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}
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#endregion
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#region 年度人力配置
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{
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if (sheetName == "年度人力配置")
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{
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HeightInPoints = 15;
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#region 标题单元格样式
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ICellStyle titleStyle = workbook.CreateCellStyle();
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titleStyle.Alignment = HorizontalAlignment.Center; //居中
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titleStyle.VerticalAlignment = VerticalAlignment.Center;//垂直居中
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titleStyle.WrapText = true;//自动换行
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// 边框
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titleStyle.BorderBottom = BorderStyle.Thin;
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titleStyle.BorderLeft = BorderStyle.Thin;
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titleStyle.BorderRight = BorderStyle.Thin;
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titleStyle.BorderTop = BorderStyle.Thin;
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IFont font = workbook.CreateFont();
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font.FontHeightInPoints = (short)10;
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font.FontName = "宋体";
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font.IsBold = true;
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titleStyle.SetFont(font);
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#endregion
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IRow headerRow = sheet.CreateRow(intTop);
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headerRow.HeightInPoints = HeightInPoints;
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for (int i = 0; i < 5; i++)
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{
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headerRow.CreateCell(i).SetCellValue(dtSource.Columns[i].ColumnName);
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headerRow.GetCell(i).CellStyle = titleStyle;
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}
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for (int i = 5; i < 17; i++)
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{
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headerRow.CreateCell(i).SetCellValue("预算编制数");
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headerRow.GetCell(i).CellStyle = titleStyle;
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}
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//headerRow.CreateCell(5).SetCellValue("预算编制数");
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//headerRow.GetCell(5).CellStyle = titleStyle;
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headerRow.CreateCell(17).SetCellValue("备注");
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headerRow.GetCell(17).CellStyle = titleStyle;
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for (int i = 0; i < 5; i++)
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sheet.AddMergedRegion(new NPOI.SS.Util.CellRangeAddress(0 + intTop, 1 + intTop, i, i));
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sheet.AddMergedRegion(new NPOI.SS.Util.CellRangeAddress(0 + intTop, 1 + intTop, 17, 17));
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sheet.AddMergedRegion(new NPOI.SS.Util.CellRangeAddress(0 + intTop, 0 + intTop, 5, 16));
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intTop += 1;
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}
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}
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#endregion
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#region 培训计划【牛尾】
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if (sheetName == "培训计划【牛尾】")
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{
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HeightInPoints = 15;
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#region 标题单元格样式
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ICellStyle titleStyle = workbook.CreateCellStyle();
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titleStyle.Alignment = HorizontalAlignment.Center; //居中
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titleStyle.VerticalAlignment = VerticalAlignment.Center;//垂直居中
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titleStyle.WrapText = true;//自动换行
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// 边框
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titleStyle.BorderBottom = BorderStyle.Thin;
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titleStyle.BorderLeft = BorderStyle.Thin;
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titleStyle.BorderRight = BorderStyle.Thin;
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titleStyle.BorderTop = BorderStyle.Thin;
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IFont font = workbook.CreateFont();
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font.FontHeightInPoints = (short)10;
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font.FontName = "宋体";
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font.IsBold = true;
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titleStyle.SetFont(font);
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#endregion
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IRow headerRow = sheet.CreateRow(intTop);
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headerRow.HeightInPoints = HeightInPoints;
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for (int i = 0; i < 13; i++)
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{
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headerRow.CreateCell(i).SetCellValue(dtSource.Columns[i].ColumnName);
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headerRow.GetCell(i).CellStyle = titleStyle;
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sheet.AddMergedRegion(new NPOI.SS.Util.CellRangeAddress(0 + intTop, 1 + intTop, i, i));
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}
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for (int i = 13; i < 36; i = i + 2)
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{
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string month = dtSource.Columns[i].ColumnName.Replace("实际合计人天_M", "") + "月";
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//month = month.Replace("进展率_M", "");
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headerRow.CreateCell(i).SetCellValue(month);
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headerRow.GetCell(i).CellStyle = titleStyle;
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headerRow.CreateCell(i + 1).SetCellValue(month);
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headerRow.GetCell(i + 1).CellStyle = titleStyle;
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sheet.AddMergedRegion(new NPOI.SS.Util.CellRangeAddress(intTop, intTop, i, i + 1));
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}
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for (int i = 37; i < 42; i++)
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{
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headerRow.CreateCell(i).SetCellValue(dtSource.Columns[i].ColumnName);
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headerRow.GetCell(i).CellStyle = titleStyle;
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sheet.AddMergedRegion(new NPOI.SS.Util.CellRangeAddress(0 + intTop, 1 + intTop, i, i));
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}
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//for (int i = 5; i < 17; i++)
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//{
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// headerRow.CreateCell(i).SetCellValue("预算编制数");
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// headerRow.GetCell(i).CellStyle = titleStyle;
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//}
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////headerRow.CreateCell(5).SetCellValue("预算编制数");
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////headerRow.GetCell(5).CellStyle = titleStyle;
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//headerRow.CreateCell(17).SetCellValue("备注");
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//headerRow.GetCell(17).CellStyle = titleStyle;
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//for (int i = 36; i < 41; i++)
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//sheet.AddMergedRegion(new NPOI.SS.Util.CellRangeAddress(0 + intTop, 1 + intTop, 17, 17));
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//sheet.AddMergedRegion(new NPOI.SS.Util.CellRangeAddress(0 + intTop, 0 + intTop, 5, 16));
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intTop += 1;
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}
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#endregion
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#region 列头及样式
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{
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IRow headerRow = sheet.CreateRow(intTop);
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headerRow.HeightInPoints = HeightInPoints;
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intTop += 1;
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ICellStyle headStyle = workbook.CreateCellStyle();
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headStyle.Alignment = HorizontalAlignment.Center; //居中
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headStyle.VerticalAlignment = VerticalAlignment.Center;//垂直居中
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headStyle.WrapText = true;//自动换行
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// 边框
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headStyle.BorderBottom = BorderStyle.Thin;
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headStyle.BorderLeft = BorderStyle.Thin;
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headStyle.BorderRight = BorderStyle.Thin;
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headStyle.BorderTop = BorderStyle.Thin;
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// 字体
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IFont font = workbook.CreateFont();
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font.FontHeightInPoints = (short)10;
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font.IsBold = true;
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font.FontName = "宋体";
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headStyle.SetFont(font);
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//ICellStyle headStyle = workbook.CreateCellStyle();
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//headStyle.Alignment = HorizontalAlignment.Center;
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//headStyle.BorderBottom = BorderStyle.Medium;
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//headStyle.FillBackgroundColor = NPOI.HSSF.Util.HSSFColor.LightGreen.Index;
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//headStyle.FillPattern = FillPattern.NoFill;
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//IFont font = workbook.CreateFont();
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//font.Boldweight = 700;
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//headStyle.SetFont(font);
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foreach (DataColumn column in dtSource.Columns)
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{
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var name = column.ColumnName;
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if (name.IndexOf("实际合计人天") > -1)
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name = "实际合计人天";
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if (name.IndexOf("进展率") > -1)
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name = "进展率";
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headerRow.CreateCell(column.Ordinal).SetCellValue(name);
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headerRow.GetCell(column.Ordinal).CellStyle = headStyle;
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//设置列宽
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//sheet.SetColumnWidth(column.Ordinal, (arrColWidth[column.Ordinal] + 1) * 256);
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if (arrColWidth[column.Ordinal] > 255)
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{
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arrColWidth[column.Ordinal] = 254;
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}
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else
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{
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sheet.SetColumnWidth(column.Ordinal, (arrColWidth[column.Ordinal] + 1) * 256);
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}
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}
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}
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#endregion
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rowIndex = intTop;
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}
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#endregion
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#region 填充内容
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IRow dataRow = sheet.CreateRow(rowIndex);
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dataRow.HeightInPoints = 25;
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ICellStyle style = workbook.CreateCellStyle();
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style.Alignment = HorizontalAlignment.Center; //居中
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style.VerticalAlignment = VerticalAlignment.Center;//垂直居中
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style.WrapText = true;//自动换行
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// 边框
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style.BorderBottom = BorderStyle.Thin;
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style.BorderLeft = BorderStyle.Thin;
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style.BorderRight = BorderStyle.Thin;
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style.BorderTop = BorderStyle.Thin;
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// 字体
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var font1 = workbook.CreateFont();
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font1.FontHeightInPoints = (short)10;
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font1.FontName = "宋体";
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style.SetFont(font1);
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foreach (DataColumn column in dtSource.Columns)
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{
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ICell newCell = dataRow.CreateCell(column.Ordinal);
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newCell.CellStyle = style;
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string drValue = row[column].ToString();
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switch (column.DataType.ToString())
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{
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case "System.String"://字符串类型
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newCell.SetCellValue(drValue);
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break;
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case "System.DateTime"://日期类型
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DateTime dateV;
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if (!string.IsNullOrEmpty(drValue))
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{
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DateTime.TryParse(drValue, out dateV);
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//dateV = DateTimeHelper.ConvertToSecondString(dateV);
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newCell.SetCellValue(ConvertToSecondString(dateV));
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//if (column.Caption == "renderDateTime")
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//{
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// newCell.CellStyle.DataFormat = format.GetFormat("yyyy-mm-dd hh:mm");
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//}
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//else if (column.Caption == "renderDate")
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//{
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// newCell.CellStyle.DataFormat = format.GetFormat("yyyy-mm-dd");
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//}
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//else
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//{
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//
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//}
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//try
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//{
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// Convert.ToDateTime(drValue); newCell.CellStyle.DataFormat = format.GetFormat("yyyy-mm-dd hh:mm:ss");
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//}
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//catch (Exception)
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//{
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//}
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}
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break;
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case "System.Boolean"://布尔型
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bool boolV = false;
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bool.TryParse(drValue, out boolV);
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newCell.SetCellValue(boolV);
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break;
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case "System.Int16":
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case "System.Int32":
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case "System.Int64":
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case "System.Byte":
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int intV = 0;
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int.TryParse(drValue, out intV);
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newCell.SetCellValue(intV);
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break;
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case "System.Decimal":
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case "System.Double":
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double doubV = 0;
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double.TryParse(drValue, out doubV);
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newCell.SetCellValue(doubV);
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break;
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case "System.DBNull"://空值处理
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newCell.SetCellValue("");
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break;
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default:
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newCell.SetCellValue("");
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break;
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}
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}
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#endregion
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foreach (DataColumn column in dtSource.Columns)
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{
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//设置列宽
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//sheet.SetColumnWidth(column.Ordinal, (arrColWidth[column.Ordinal] + 1) * 256);
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if (arrColWidth[column.Ordinal] > 255)
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{
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arrColWidth[column.Ordinal] = 254;
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}
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else
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{
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sheet.SetColumnWidth(column.Ordinal, (arrColWidth[column.Ordinal] + 1) * 256);
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}
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}
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rowIndex++;
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}
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//获取当前列的宽度，然后对比本列的长度，取最大值
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if (true)
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for (int columnNum = 0; columnNum <= dtSource.Columns.Count; columnNum++)
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{
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sheet.AutoSizeColumn(columnNum);//先来个常规自适应
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var columnWidth = sheet.GetColumnWidth(columnNum) / 256;
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for (int rowNum = 1; rowNum <= sheet.LastRowNum; rowNum++)
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{
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IRow currentRow;
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//当前行未被使用过
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if (sheet.GetRow(rowNum) == null)
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{
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currentRow = sheet.CreateRow(rowNum);
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}
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else
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{
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currentRow = sheet.GetRow(rowNum);
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}
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if (currentRow.GetCell(columnNum) != null)
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{
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ICell currentCell = currentRow.GetCell(columnNum);
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int length = Encoding.Default.GetBytes(currentCell.ToString()).Length;
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if (columnWidth < length)
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{
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columnWidth = length;
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if (columnWidth > 30) columnWidth = 30;
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}
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}
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}
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try
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{
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sheet.SetColumnWidth(columnNum, columnWidth * 300); // 256
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}
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catch (Exception e)
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{
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}
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}
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for (int rowNum = 2; rowNum <= sheet.LastRowNum; rowNum++)
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{
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IRow currentRow = sheet.GetRow(rowNum);
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int length = 25;
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foreach (var item in currentRow.Cells)
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{
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if (item != null)
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length = Encoding.UTF8.GetBytes(item.ToString()).Length > length ? Encoding.UTF8.GetBytes(item.ToString()).Length : length;
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}
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currentRow.HeightInPoints = 35 * (length / 150 + 1);
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}
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using (MemoryStream ms = new MemoryStream())
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{
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workbook.Write(ms);
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ms.Flush();
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workbook.Dispose();
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//ms.Position = 0;
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return ms;
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}
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}
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#endregion
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public static string ConvertToSecondString(DateTime? dateTime)
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{
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if (dateTime is null)
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return "";
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return dateTime.Value.ToString(@"yyyy\-MM\-dd HH:mm:ss");
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}
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#region DaataTable 导出到 Excel 文件
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/// <summary>
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/// DaataTable 导出到 Excel 文件
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/// </summary>
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/// <param name="dtSource">源 DataaTable</param>
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/// <param name="strHeaderText">表头文本</param>
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/// <param name="strFileName">保存位置(文件名及路径)</param>
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public static void ExportExcel(DataTable dtSource, string strHeaderText, string sheetName = null, string strFileName = null)
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{
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using (MemoryStream ms = GenerateExportExcel(dtSource, strHeaderText, sheetName, strFileName))
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{
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using (FileStream fs = new FileStream(strFileName, FileMode.Create, FileAccess.Write))
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{
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byte[] data = ms.ToArray();
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fs.Write(data, 0, data.Length);
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fs.Flush();
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}
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}
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}
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#endregion
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#region 读取 excel,默认第一行为标头
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/// <summary>
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/// 读取 excel,默认第一行为标头
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/// </summary>
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/// <param name="strFileName">excel 文档路径</param>
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/// <returns></returns>
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public static DataTable ImportExcel(string strFileName, string sheetName = "")
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{
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DataTable dt = new DataTable();
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//HSSFWorkbook hssfworkbook;
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IWorkbook hssfworkbook;
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ISheet sheet;
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using (FileStream file = new FileStream(strFileName, FileMode.Open, FileAccess.Read))
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{
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//hssfworkbook = new HSSFWorkbook(file);
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//hssfworkbook = new XSSFWorkbook(file);
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hssfworkbook = NPOI.SS.UserModel.WorkbookFactory.Create(file);
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}
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if (hssfworkbook == null) throw new Exception("未能加载excel");
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int sheetCount = hssfworkbook.NumberOfSheets;
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if (sheetCount == 0) throw new Exception("未能加载excel");
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if (string.IsNullOrEmpty(sheetName))
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{
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sheet = hssfworkbook.GetSheetAt(0);
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}
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else
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{
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int sheetIndex = hssfworkbook.GetSheetIndex(sheetName);
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if (sheetIndex >= 0)
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{
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sheet = hssfworkbook.GetSheetAt(sheetIndex);
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}
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else
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{
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throw new Exception($"未能找到{sheetName}这个sheet页");
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}
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}
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System.Collections.IEnumerator rows = sheet.GetRowEnumerator();
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IRow headerRow = sheet.GetRow(0);
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int cellCount = headerRow.LastCellNum;
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for (int j = 0; j < cellCount; j++)
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{
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ICell cell = headerRow.GetCell(j);
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if (!string.IsNullOrWhiteSpace(cell.ToString()))
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dt.Columns.Add(cell.ToString());
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}
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for (int i = (sheet.FirstRowNum + 1); i <= sheet.LastRowNum; i++)
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{
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IRow row = sheet.GetRow(i);
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if (row is null)
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continue;
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//if (row.GetCell(row.FirstCellNum) != null && row.GetCell(row.FirstCellNum).ToString().Length > 0)
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//if (row.GetCell(row.FirstCellNum) != null)
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{
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DataRow dataRow = dt.NewRow();
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for (int j = row.FirstCellNum; j < cellCount; j++)
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{
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if (j < 0)
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continue;
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if (row.GetCell(j) != null)
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{
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DateTime dateV = DateTime.MinValue;
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try
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{
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dataRow[j] = GetCellValue(row.GetCell(j));
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//if (row.GetCell(j).IsDate())
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//{
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// dateV = row.GetCell(j).DateCellValue;
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// dataRow[j] = DateTimeHelper.ConvertToSecondString(dateV);
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//}
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//else
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//{
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// dataRow[j] = row.GetCell(j).ToString();
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//}
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}
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catch { }
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//if (dateV == DateTime.MinValue)
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//{
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// dataRow[j] = row.GetCell(j).ToString();
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//}
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//else
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//{
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// dataRow[j] = DateTimeHelper.ConvertToSecondString(dateV);
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//}
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}
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}
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dt.Rows.Add(dataRow);
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}
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}
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return dt;
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}
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#endregion
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/// <summary>
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/// 获取单元格类型
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/// </summary>
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/// <param name="cell"></param>
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/// <returns></returns>
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private static string GetCellValue(ICell cell)
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{
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if (cell == null)
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return null;
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switch (cell.CellType)
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{
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case CellType.Blank: //BLANK:
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return null;
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case CellType.Boolean: //BOOLEAN:
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return Convert.ToString(cell.BooleanCellValue);
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case CellType.Numeric: //NUMERIC:
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if (DateUtil.IsCellDateFormatted(cell))
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{
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return ConvertToSecondString(cell.DateCellValue);
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}
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else
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{
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return Convert.ToString(cell);
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}
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case CellType.String: //STRING:
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return cell.StringCellValue;
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case CellType.Error: //ERROR:
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return Convert.ToString(cell.ErrorCellValue);
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case CellType.Formula: //FORMULA:
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default:
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return "=" + cell.CellFormula;
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}
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}
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/// <summary>
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/// DataSet 导出到 Excel 的 MemoryStream
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/// </summary>
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/// <param name="dsSource">源 DataSet</param>
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/// <param name="strHeaderText">表头文本 空值未不要表头标题(多个表对应多个表头以英文逗号(,)分开，个数应与表相同)</param>
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/// <returns></returns>
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public static MemoryStream ExportExcel(DataSet dsSource, string strHeaderText)
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{
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HSSFWorkbook workbook = new HSSFWorkbook();
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#region 文件属性
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DocumentSummaryInformation dsi = PropertySetFactory.CreateDocumentSummaryInformation();
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dsi.Company = "517best.com";
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workbook.DocumentSummaryInformation = dsi;
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SummaryInformation si = PropertySetFactory.CreateSummaryInformation();
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si.Author = "517best.com";
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si.ApplicationName = "517best.com";
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si.LastAuthor = "517best.com";
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si.Comments = "";
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si.Title = "";
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si.Subject = "";
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si.CreateDateTime = DateTime.Now;
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workbook.SummaryInformation = si;
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#endregion
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#region 注释
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//ICellStyle dateStyle = workbook.CreateCellStyle();
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//IDataFormat format = workbook.CreateDataFormat();
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//dateStyle.DataFormat = format.GetFormat("yyyy-mm-dd");
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//ISheet sheet = workbook.CreateSheet();
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//int[] arrColWidth = new int[dtSource.Columns.Count];
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//foreach (DataColumn item in dtSource.Columns)
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//{
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// arrColWidth[item.Ordinal] = Encoding.GetEncoding("gb2312").GetBytes(item.ColumnName.ToString()).Length;
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//}
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//for (int i = 0; i < dtSource.Rows.Count; i++)
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//{
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// for (int j = 0; j < dtSource.Columns.Count; j++)
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// {
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// int intTemp = Encoding.GetEncoding("gb2312").GetBytes(dtSource.Rows[i][j].ToString()).Length;
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// if (intTemp > arrColWidth[j])
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// {
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// arrColWidth[j] = intTemp;
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// }
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// }
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//}
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//int rowIndex = 0;
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//int intTop = 0;
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//foreach (DataRow row in dtSource.Rows)
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//{
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// #region 新建表、填充表头、填充列头，样式
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// if (rowIndex == 65535 || rowIndex == 0)
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// {
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// if (rowIndex != 0)
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// {
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// sheet = workbook.CreateSheet();
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// }
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// intTop = 0;
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// #region 表头及样式
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// {
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// if (strHeaderText.Length > 0)
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// {
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// IRow headerRow = sheet.CreateRow(intTop);
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// intTop += 1;
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// headerRow.HeightInPoints = 25;
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// headerRow.CreateCell(0).SetCellValue(strHeaderText);
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// ICellStyle headStyle = workbook.CreateCellStyle();
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// headStyle.Alignment = HorizontalAlignment.CENTER;
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// IFont font = workbook.CreateFont();
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// font.FontHeightInPoints = 20;
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// font.Boldweight = 700;
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// headStyle.SetFont(font);
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// headerRow.GetCell(0).CellStyle = headStyle;
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// sheet.AddMergedRegion(new NPOI.SS.Util.CellRangeAddress(0, 0, 0, dtSource.Columns.Count - 1));
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// }
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// }
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// #endregion
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// #region 列头及样式
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// {
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// IRow headerRow = sheet.CreateRow(intTop);
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// intTop += 1;
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// ICellStyle headStyle = workbook.CreateCellStyle();
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// headStyle.Alignment = HorizontalAlignment.CENTER;
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// IFont font = workbook.CreateFont();
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// font.Boldweight = 700;
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// headStyle.SetFont(font);
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// foreach (DataColumn column in dtSource.Columns)
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// {
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// headerRow.CreateCell(column.Ordinal).SetCellValue(column.ColumnName);
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// headerRow.GetCell(column.Ordinal).CellStyle = headStyle;
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// //设置列宽
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// sheet.SetColumnWidth(column.Ordinal, (arrColWidth[column.Ordinal] + 1) * 256);
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// }
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// }
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// #endregion
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// rowIndex = intTop;
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// }
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// #endregion
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// #region 填充内容
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// IRow dataRow = sheet.CreateRow(rowIndex);
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// foreach (DataColumn column in dtSource.Columns)
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// {
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// ICell newCell = dataRow.CreateCell(column.Ordinal);
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// string drValue = row[column].ToString();
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// switch (column.DataType.ToString())
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// {
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// case "System.String"://字符串类型
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// newCell.SetCellValue(drValue);
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// break;
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// case "System.DateTime"://日期类型
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// DateTime dateV;
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// DateTime.TryParse(drValue, out dateV);
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// newCell.SetCellValue(dateV);
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// newCell.CellStyle = dateStyle;//格式化显示
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// break;
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// case "System.Boolean"://布尔型
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// bool boolV = false;
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// bool.TryParse(drValue, out boolV);
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// newCell.SetCellValue(boolV);
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// break;
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// case "System.Int16":
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// case "System.Int32":
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// case "System.Int64":
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// case "System.Byte":
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// int intV = 0;
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// int.TryParse(drValue, out intV);
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// newCell.SetCellValue(intV);
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// break;
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// case "System.Decimal":
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// case "System.Double":
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// double doubV = 0;
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// double.TryParse(drValue, out doubV);
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// newCell.SetCellValue(doubV);
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// break;
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// case "System.DBNull"://空值处理
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// newCell.SetCellValue("");
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// break;
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// default:
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// newCell.SetCellValue("");
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// break;
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// }
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// }
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// #endregion
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// rowIndex++;
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//}
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#endregion
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string[] strNewText = strHeaderText.Split(Convert.ToChar(","));
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if (dsSource.Tables.Count == strNewText.Length)
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{
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for (int i = 0; i < dsSource.Tables.Count; i++)
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{
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ExportFromDSExcel(workbook, dsSource.Tables[i], strNewText[i]);
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}
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}
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using (MemoryStream ms = new MemoryStream())
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{
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workbook.Write(ms);
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ms.Flush();
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ms.Position = 0;
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return ms;
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}
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}
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/// <summary>
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/// DataTable 导出到 Excel 的 MemoryStream
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/// </summary>
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/// <param name="workbook">源 workbook</param>
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/// <param name="dtSource">源 DataTable</param>
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/// <param name="strHeaderText">表头文本 空值未不要表头标题(多个表对应多个表头以英文逗号(,)分开，个数应与表相同)</param>
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/// <returns></returns>
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public static void ExportFromDSExcel(HSSFWorkbook workbook, DataTable dtSource, string strHeaderText)
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{
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ICellStyle dateStyle = workbook.CreateCellStyle();
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IDataFormat format = workbook.CreateDataFormat();
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dateStyle.DataFormat = format.GetFormat("yyyy-MM-dd HH:mm:ss");
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ISheet sheet = workbook.CreateSheet(strHeaderText);
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int[] arrColWidth = new int[dtSource.Columns.Count];
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foreach (DataColumn item in dtSource.Columns)
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{
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arrColWidth[item.Ordinal] = Encoding.GetEncoding("utf-8").GetBytes(item.ColumnName.ToString()).Length;
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}
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for (int i = 0; i < dtSource.Rows.Count; i++)
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{
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for (int j = 0; j < dtSource.Columns.Count; j++)
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{
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int intTemp = Encoding.GetEncoding("utf-8").GetBytes(dtSource.Rows[i][j].ToString()).Length;
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if (intTemp > arrColWidth[j])
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{
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arrColWidth[j] = intTemp;
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}
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}
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}
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int rowIndex = 0;
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int intTop = 0;
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foreach (DataRow row in dtSource.Rows)
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{
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#region 新建表、填充表头、填充列头，样式
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if (rowIndex == 65535 || rowIndex == 0)
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{
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if (rowIndex != 0)
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{
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sheet = workbook.CreateSheet();
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}
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intTop = 0;
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#region 表头及样式
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{
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if (strHeaderText.Length > 0)
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{
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IRow headerRow = sheet.CreateRow(intTop);
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intTop += 1;
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headerRow.HeightInPoints = 25;
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headerRow.CreateCell(0).SetCellValue(strHeaderText);
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ICellStyle headStyle = workbook.CreateCellStyle();
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headStyle.Alignment = HorizontalAlignment.Center;
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IFont font = workbook.CreateFont();
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font.FontHeightInPoints = 20;
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font.Boldweight = 700;
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headStyle.SetFont(font);
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headerRow.GetCell(0).CellStyle = headStyle;
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sheet.AddMergedRegion(new NPOI.SS.Util.CellRangeAddress(0, 0, 0, dtSource.Columns.Count - 1));
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}
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}
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#endregion
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#region 列头及样式
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{
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IRow headerRow = sheet.CreateRow(intTop);
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intTop += 1;
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ICellStyle headStyle = workbook.CreateCellStyle();
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headStyle.Alignment = HorizontalAlignment.Center;
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IFont font = workbook.CreateFont();
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font.Boldweight = 700;
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headStyle.SetFont(font);
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foreach (DataColumn column in dtSource.Columns)
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{
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headerRow.CreateCell(column.Ordinal).SetCellValue(column.ColumnName);
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headerRow.GetCell(column.Ordinal).CellStyle = headStyle;
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//设置列宽
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// sheet.SetColumnWidth(column.Ordinal, (arrColWidth[column.Ordinal] + 1) * 256); // 设置设置列宽 太长会报错 修改2014 年9月22日
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int dd = (arrColWidth[column.Ordinal] + 1) * 256;
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if (dd > 200 * 256)
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{
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dd = 100 * 256;
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}
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sheet.SetColumnWidth(column.Ordinal, dd);
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}
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}
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#endregion
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rowIndex = intTop;
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}
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#endregion
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#region 填充内容
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IRow dataRow = sheet.CreateRow(rowIndex);
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foreach (DataColumn column in dtSource.Columns)
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{
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ICell newCell = dataRow.CreateCell(column.Ordinal);
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string drValue = row[column].ToString();
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switch (column.DataType.ToString())
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{
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case "System.String"://字符串类型
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newCell.SetCellValue(drValue);
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break;
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case "System.DateTime"://日期类型
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if (drValue.Length > 0)
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{
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DateTime dateV;
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DateTime.TryParse(drValue, out dateV);
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newCell.SetCellValue(dateV);
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newCell.CellStyle = dateStyle;//格式化显示
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}
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else { newCell.SetCellValue(drValue); }
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break;
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case "System.Boolean"://布尔型
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bool boolV = false;
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bool.TryParse(drValue, out boolV);
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newCell.SetCellValue(boolV);
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break;
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case "System.Int16":
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case "System.Int32":
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case "System.Int64":
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case "System.Byte":
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int intV = 0;
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int.TryParse(drValue, out intV);
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newCell.SetCellValue(intV);
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break;
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case "System.Decimal":
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case "System.Double":
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double doubV = 0;
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double.TryParse(drValue, out doubV);
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newCell.SetCellValue(doubV);
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break;
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case "System.DBNull"://空值处理
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newCell.SetCellValue("");
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break;
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default:
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newCell.SetCellValue("");
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break;
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}
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}
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#endregion
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rowIndex++;
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}
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}
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}
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