diff --git a/Tiobon.Core.Services/Ghre/Ghre_CourseWareServices.cs b/Tiobon.Core.Services/Ghre/Ghre_CourseWareServices.cs
index e25b59cb..fe0064cd 100644
--- a/Tiobon.Core.Services/Ghre/Ghre_CourseWareServices.cs
+++ b/Tiobon.Core.Services/Ghre/Ghre_CourseWareServices.cs
@@ -97,44 +97,44 @@ public class Ghre_CourseWareServices : BaseServices<Ghre_CourseWare, Ghre_Course
 
 
 
-//        string sql = "SELECT Id,QuestionId from Ghre_QuestionAnswer where AnswerContent='单选题'";
-//        var questionAnswers = await Db.Ado.SqlQueryAsync<Ghre_QuestionAnswer>(sql);
-//        for (int i = 0; i < questionAnswers.Count; i++)
-//        {
-//            await Db.Deleteable(new Ghre_QuestionAnswer() { Id = questionAnswers[i].Id }).ExecuteCommandAsync();
-//            sql = $@"UPDATE A
-//SET A.TaxisNo = B.NUM
-//FROM Ghre_QuestionAnswer A
-//     JOIN
-//     (SELECT ID, NUM * 100 NUM
-//      FROM (SELECT *, ROW_NUMBER () OVER (ORDER BY TaxisNo) NUM
-//            FROM (SELECT *
-//                  FROM (SELECT *
-//                        FROM Ghre_QuestionAnswer
-//                        WHERE QuestionId = '{questionAnswers[i].QuestionId}') A) B) C) B
-//        ON A.ID = b.ID;
-
-
-
-//UPDATE Ghre_QuestionAnswer
-//SET QuestionNo =
-//       CASE TaxisNo
-//          WHEN 100 THEN 'A'
-//          WHEN 200 THEN 'B'
-//          WHEN 300 THEN 'C'
-//          WHEN 400 THEN 'D'
-//          WHEN 500 THEN 'E'
-//          WHEN 600 THEN 'F'
-//          WHEN 700 THEN 'G'
-//          WHEN 800 THEN 'H'
-//          WHEN 900 THEN 'I'
-//          WHEN 1000 THEN 'J'
-//          WHEN 1100 THEN 'K'
-//          WHEN 1200 THEN 'L'
-//       END
-//WHERE QuestionId = '{questionAnswers[i].QuestionId}'";
-//            await Db.Ado.SqlQueryAsync<Ghre_QuestionAnswer>(sql);
-//        }
+        //        string sql = "SELECT Id,QuestionId from Ghre_QuestionAnswer where AnswerContent='单选题'";
+        //        var questionAnswers = await Db.Ado.SqlQueryAsync<Ghre_QuestionAnswer>(sql);
+        //        for (int i = 0; i < questionAnswers.Count; i++)
+        //        {
+        //            await Db.Deleteable(new Ghre_QuestionAnswer() { Id = questionAnswers[i].Id }).ExecuteCommandAsync();
+        //            sql = $@"UPDATE A
+        //SET A.TaxisNo = B.NUM
+        //FROM Ghre_QuestionAnswer A
+        //     JOIN
+        //     (SELECT ID, NUM * 100 NUM
+        //      FROM (SELECT *, ROW_NUMBER () OVER (ORDER BY TaxisNo) NUM
+        //            FROM (SELECT *
+        //                  FROM (SELECT *
+        //                        FROM Ghre_QuestionAnswer
+        //                        WHERE QuestionId = '{questionAnswers[i].QuestionId}') A) B) C) B
+        //        ON A.ID = b.ID;
+
+
+
+        //UPDATE Ghre_QuestionAnswer
+        //SET QuestionNo =
+        //       CASE TaxisNo
+        //          WHEN 100 THEN 'A'
+        //          WHEN 200 THEN 'B'
+        //          WHEN 300 THEN 'C'
+        //          WHEN 400 THEN 'D'
+        //          WHEN 500 THEN 'E'
+        //          WHEN 600 THEN 'F'
+        //          WHEN 700 THEN 'G'
+        //          WHEN 800 THEN 'H'
+        //          WHEN 900 THEN 'I'
+        //          WHEN 1000 THEN 'J'
+        //          WHEN 1100 THEN 'K'
+        //          WHEN 1200 THEN 'L'
+        //       END
+        //WHERE QuestionId = '{questionAnswers[i].QuestionId}'";
+        //            await Db.Ado.SqlQueryAsync<Ghre_QuestionAnswer>(sql);
+        //        }
 
         return result;
 
@@ -237,4 +237,37 @@ public class Ghre_CourseWareServices : BaseServices<Ghre_CourseWare, Ghre_Course
             }
         }
     }
+
+    #region 删除
+    // <summary>
+    /// 删除指定ID的数据
+    /// </summary>
+    /// <param name="id">主键ID</param>
+    /// <returns></returns>
+    public override async Task<bool> DeleteById1(object id)
+    {
+
+        if (await Db.Queryable<Ghre_Course>().AnyAsync(x => x.CourseWareId == (long)id))
+            throw new Exception($"该课件已与课程关联,暂不可删除！");
+
+        return await base.DeleteById1(id);
+    }
+
+    /// <summary>
+    /// 删除指定ID集合的数据(批量删除)
+    /// </summary>
+    /// <param name="ids">主键ID集合</param>
+    /// <returns></returns>
+    public override async Task<bool> DeleteByIds1(long[] ids)
+    {
+
+        foreach (var id in ids)
+        {
+            if (await Db.Queryable<Ghre_Course>().AnyAsync(x => x.CourseWareId == (long)id))
+                throw new Exception($"课件已与课程关联,暂不可删除！");
+        }
+
+        return await base.DeleteByIds1(ids);
+    }
+    #endregion
 }
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