C# 获取DataTable数据导出到Excel

     protected void ExportExcel(System.Data.DataTable dt)
     {
         if (dt == null || dt.Rows.Count == ) return;
         Microsoft.Office.Interop.Excel.Application xlsxApp = new Application();
         if (xlsxApp == null) return;
         //System.Globalization.CultureInfo CurrentCI = System.Threading.Thread.CurrentThread.CurrentCulture;
         //System.Threading.Thread.CurrentThread.CurrentCulture = new System.Globalization.CultureInfo("en-US");
         Microsoft.Office.Interop.Excel.Workbooks workbooks = xlsxApp.Workbooks;
         Microsoft.Office.Interop.Excel.Workbook workbook = workbooks.Add(Microsoft.Office.Interop.Excel.XlWBATemplate.xlWBATWorksheet);
         Microsoft.Office.Interop.Excel.Worksheet worksheet = (Microsoft.Office.Interop.Excel.Worksheet)workbook.Worksheets[];
         Microsoft.Office.Interop.Excel.Range range;
         long totalCount = dt.Rows.Count;
         long rowRead = ;
         float percent = ;
         for (int i = ; i < dt.Columns.Count; i++)
         {
             worksheet.Cells[, i + ] = dt.Columns[i].ColumnName;
             range = (Microsoft.Office.Interop.Excel.Range)worksheet.Cells[, i + ];
             range.Interior.ColorIndex = ;
         }
         for (int r = ; r < dt.Rows.Count; r++)
         {
             for (int i = ; i < dt.Columns.Count; i++)
             {
                 try
                 {
                     worksheet.Cells[r + , i + ] = dt.Rows[r][i].ToString();
                 }
                 catch (Exception)
                 {
                     worksheet.Cells[r + , i + ] = dt.Rows[r][i].ToString().Replace("=", "");
                     throw;
                 }
             }
             rowRead++;
             percent = ((float)( * rowRead)) / totalCount;
         }
         ////在Excel的指定位置加入图片
         //worksheet.Shapes.AddPicture("C:\\Users\\mengmeng.zhao\\Desktop\\1.jpg",
         //    Microsoft.Office.Core.MsoTriState.msoFalse, Microsoft.Office.Core.MsoTriState.msoTrue, 100, 200, 200, 300);
         ////在Excel的指定位置加入文本框，和里面的内容.
         //worksheet.Shapes.AddTextEffect(Microsoft.Office.Core.MsoPresetTextEffect.msoTextEffect1,
         //    "123456", "Red", 15, Microsoft.Office.Core.MsoTriState.msoFalse, Microsoft.Office.Core.MsoTriState.msoTrue, 150, 200);

         xlsxApp.Visible = true;
     }