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优化Excel导出格式

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master
xiaochanghai 11 months ago
parent 47a92a9958
commit 2acc901da8
1 changed files with 114 additions and 19 deletions
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  1. 133
      Tiobon.Core.Common/Helper/NPOIHelper.cs

133
Tiobon.Core.Common/Helper/NPOIHelper.cs
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@ -3,8 +3,10 @@ using System.IO;
using System.Text;
using NPOI.HPSF;
using NPOI.HSSF.UserModel;
using NPOI.OpenXmlFormats.Spreadsheet;
using NPOI.SS.UserModel;
using NPOI.XSSF.UserModel;
using RestSharp;
namespace Tiobon.Core.Common.Helper;
@ -92,17 +94,39 @@ public class NPOIHelper
{
if (!string.IsNullOrWhiteSpace(strHeaderText) && strHeaderText.Length > 0)
{
#region 标题单元格样式
ICellStyle titleStyle = workbook.CreateCellStyle();
titleStyle.Alignment = HorizontalAlignment.Center; //居中
titleStyle.VerticalAlignment = VerticalAlignment.Center;//垂直居中
titleStyle.WrapText = true;//自动换行
// 边框
titleStyle.BorderBottom = BorderStyle.Thin;
titleStyle.BorderLeft = BorderStyle.None;
titleStyle.BorderRight = BorderStyle.None;
titleStyle.BorderTop = BorderStyle.None;
IFont font = workbook.CreateFont();
font.FontHeightInPoints = (short)14;
font.FontName = "宋体";
font.IsBold = true;
titleStyle.SetFont(font);
#endregion
IRow headerRow = sheet.CreateRow(intTop);
intTop += 1;
headerRow.HeightInPoints = 25;
headerRow.CreateCell(0).SetCellValue(strHeaderText);
ICellStyle headStyle = workbook.CreateCellStyle();
headStyle.Alignment = HorizontalAlignment.Center;
IFont font = workbook.CreateFont();
font.FontHeightInPoints = 20;
font.Boldweight = 700;
headStyle.SetFont(font);
headerRow.GetCell(0).CellStyle = headStyle;
//ICellStyle headStyle = workbook.CreateCellStyle();
//headStyle.Alignment = HorizontalAlignment.Center;
//IFont font = workbook.CreateFont();
//font.FontHeightInPoints = 20;
//font.IsBold = true;
//headStyle.SetFont(font);
headerRow.GetCell(0).CellStyle = titleStyle;
// 设置行高
headerRow.HeightInPoints = 45;
sheet.AddMergedRegion(new NPOI.SS.Util.CellRangeAddress(0, 0, 0, dtSource.Columns.Count - 1));
}
@ -111,15 +135,33 @@ public class NPOIHelper
#region 列头及样式
{
IRow headerRow = sheet.CreateRow(intTop);
headerRow.HeightInPoints = 40;
intTop += 1;
ICellStyle headStyle = workbook.CreateCellStyle();
headStyle.Alignment = HorizontalAlignment.Center;
headStyle.BorderBottom = BorderStyle.Medium;
headStyle.FillBackgroundColor = NPOI.HSSF.Util.HSSFColor.LightGreen.Index;
headStyle.FillPattern = FillPattern.NoFill;
headStyle.Alignment = HorizontalAlignment.Center; //居中
headStyle.VerticalAlignment = VerticalAlignment.Center;//垂直居中
headStyle.WrapText = true;//自动换行
// 边框
headStyle.BorderBottom = BorderStyle.Thin;
headStyle.BorderLeft = BorderStyle.Thin;
headStyle.BorderRight = BorderStyle.Thin;
headStyle.BorderTop = BorderStyle.Thin;
// 字体
IFont font = workbook.CreateFont();
font.Boldweight = 700;
font.FontHeightInPoints = (short)10;
font.IsBold = true;
font.FontName = "宋体";
headStyle.SetFont(font);
//ICellStyle headStyle = workbook.CreateCellStyle();
//headStyle.Alignment = HorizontalAlignment.Center;
//headStyle.BorderBottom = BorderStyle.Medium;
//headStyle.FillBackgroundColor = NPOI.HSSF.Util.HSSFColor.LightGreen.Index;
//headStyle.FillPattern = FillPattern.NoFill;
//IFont font = workbook.CreateFont();
//font.Boldweight = 700;
//headStyle.SetFont(font);
foreach (DataColumn column in dtSource.Columns)
{
headerRow.CreateCell(column.Ordinal).SetCellValue(column.ColumnName);
@ -144,9 +186,28 @@ public class NPOIHelper
#endregion
#region 填充内容
IRow dataRow = sheet.CreateRow(rowIndex);
dataRow.HeightInPoints = 25;
ICellStyle style = workbook.CreateCellStyle();
style.Alignment = HorizontalAlignment.Center; //居中
style.VerticalAlignment = VerticalAlignment.Center;//垂直居中
style.WrapText = true;//自动换行
// 边框
style.BorderBottom = BorderStyle.Thin;
style.BorderLeft = BorderStyle.Thin;
style.BorderRight = BorderStyle.Thin;
style.BorderTop = BorderStyle.Thin;
// 字体
var font1 = workbook.CreateFont();
font1.FontHeightInPoints = (short)10;
font1.FontName = "宋体";
style.SetFont(font1);
foreach (DataColumn column in dtSource.Columns)
{
ICell newCell = dataRow.CreateCell(column.Ordinal);
newCell.CellStyle = style;
string drValue = row[column].ToString();
switch (column.DataType.ToString())
{
@ -162,15 +223,15 @@ public class NPOIHelper
newCell.SetCellValue(dateV);
if (column.Caption == "renderDateTime")
{
newCell.CellStyle = datetimeStyle;//格式化显示到分钟
newCell.CellStyle.DataFormat = format.GetFormat("yyyy-mm-dd hh:mm");
}
else if (column.Caption == "renderDate")
{
newCell.CellStyle = dateStyle;//格式化显示到天
{
newCell.CellStyle.DataFormat = format.GetFormat("yyyy-mm-dd");
}
else
{
newCell.CellStyle = datetimesStyle;//格式化显示到秒
{
newCell.CellStyle.DataFormat = format.GetFormat("yyyy-mm-dd hh:mm:ss");
}
}
break;
@ -202,6 +263,40 @@ public class NPOIHelper
}
}
#endregion
//获取当前列的宽度，然后对比本列的长度，取最大值
if (true)
for (int columnNum = 0; columnNum <= dtSource.Columns.Count; columnNum++)
{
sheet.AutoSizeColumn(columnNum);//先来个常规自适应
var columnWidth = sheet.GetColumnWidth(columnNum) / 256;
for (int rowNum = 1; rowNum <= sheet.LastRowNum; rowNum++)
{
IRow currentRow;
//当前行未被使用过
if (sheet.GetRow(rowNum) == null)
{
currentRow = sheet.CreateRow(rowNum);
}
else
{
currentRow = sheet.GetRow(rowNum);
}
if (currentRow.GetCell(columnNum) != null)
{
ICell currentCell = currentRow.GetCell(columnNum);
int length = Encoding.Default.GetBytes(currentCell.ToString()).Length;
if (columnWidth < length)
{
columnWidth = length;
if (columnWidth > 30) columnWidth = 30;
}
}
}
sheet.SetColumnWidth(columnNum, columnWidth * 300); // 256
}
rowIndex++;
}
using (MemoryStream ms = new MemoryStream())
@ -286,7 +381,7 @@ public class NPOIHelper
{
IRow row = sheet.GetRow(i);
if(row is null)
if (row is null)
continue;
//if (row.GetCell(row.FirstCellNum) != null && row.GetCell(row.FirstCellNum).ToString().Length > 0)
//if (row.GetCell(row.FirstCellNum) != null)
@ -294,7 +389,7 @@ public class NPOIHelper
DataRow dataRow = dt.NewRow();
for (int j = row.FirstCellNum; j < cellCount; j++)
{
if(j<0)
if (j < 0)
continue;
if (row.GetCell(j) != null)
{

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