SQL Server：クエリをCSVにエクスポート

Question

このクエリの結果をCSVファイルにエクスポートしたいが、サーバーに置くと機能しない。

これをローカルで実行すると問題はありませんが、サーバーにアップロードするとすぐに何も実行されず、アプリケーションがクラッシュします。誰かが私を助けることができますか？

protected void btnExport_Click(object sender, EventArgs e) 
{ 
    string sCon = ConfigurationManager.ConnectionStrings["PayrollPlusConnectionString"].ConnectionString; 

    using (SqlConnection con = new SqlConnection(sCon)) 
    { 
     using (SqlCommand cmd = new SqlCommand("SELECT DISTINCT ManualAdjustments.PTLName, ManualAdjustments.PTLStaffID, ManualAdjustments.CampusOccurred, ManualAdjustments.DeptOccurred, ManualAdjustments.DateOccurred, ManualAdjustments.CourseDetails, ManualAdjustments.Duration, ManualAdjustments.ValueOfDuration, ManualAdjustments.Grade, ManualAdjustments.CostCentre, ManualAdjustments.Comment, ManualAdjustments.Reason, ManualAdjustments.RatePerHour, ManualAdjustments.Pay, ManualAdjustments.PayPeriod FROM ManualAdjustments INNER JOIN PayrollPeriod ON ManualAdjustments.PayPeriod = PayrollPeriod.PayrollPeriod ORDER BY ManualAdjustments.PTLName")) 
     { 
       SqlDataAdapter sda = new SqlDataAdapter(); 

       try 
       { 
        cmd.Connection = con; 
        con.Open(); 
        sda.SelectCommand = cmd; 

        DataTable dt = new DataTable(); 
        sda.Fill(dt); 

        if (dt.Rows.Count > 0) 
        { 
         string path = Server.MapPath("exportedfiles\\"); 

         if (!Directory.Exists(path)) // CHECK IF THE FOLDER EXISTS. IF NOT, CREATE A NEW FOLDER. 
         { 
          Directory.CreateDirectory(path); 
         } 

         File.Delete(path + "ManualAdjustments.xlsx"); // DELETE THE FILE BEFORE CREATING A NEW ONE. 

         // ADD A WORKBOOK USING THE EXCEL APPLICATION. 
         Excel.Application xlAppToExport = new Excel.Application(); 
         xlAppToExport.Workbooks.Add(""); 

         // ADD A WORKSHEET. 
         Excel.Worksheet xlWorkSheetToExport = default(Excel.Worksheet); 
         xlWorkSheetToExport = (Excel.Worksheet)xlAppToExport.Sheets["Sheet1"]; 

         // ROW ID FROM WHERE THE DATA STARTS SHOWING. 
         int iRowCnt = 2; 

         //// SHOW THE HEADER. 
         //xlWorkSheetToExport.Cells[1, 1] = "Manual Adjustments"; 

         //Excel.Range range = xlWorkSheetToExport.Cells[1, 1] as Excel.Range; 
         //range.EntireRow.Font.Name = "Calibri"; 
         //range.EntireRow.Font.Bold = true; 
         //range.EntireRow.Font.Size = 20; 

         //xlWorkSheetToExport.Range["A1:D1"].MergeCells = true;  // MERGE CELLS OF THE HEADER. 

         // SHOW COLUMNS ON THE TOP. 
         xlWorkSheetToExport.Cells[iRowCnt - 1, 1] = "PTL Name"; 
         xlWorkSheetToExport.Cells[iRowCnt - 1, 2] = "PTL Staff ID"; 
         xlWorkSheetToExport.Cells[iRowCnt - 1, 3] = "Campus"; 
         xlWorkSheetToExport.Cells[iRowCnt - 1, 4] = "Department"; 
         xlWorkSheetToExport.Cells[iRowCnt - 1, 5] = "Date"; 
         xlWorkSheetToExport.Cells[iRowCnt - 1, 6] = "Course Details"; 
         xlWorkSheetToExport.Cells[iRowCnt - 1, 7] = "Duration"; 
         xlWorkSheetToExport.Cells[iRowCnt - 1, 8] = "Value of Duration"; 
         xlWorkSheetToExport.Cells[iRowCnt - 1, 9] = "Grade"; 
         xlWorkSheetToExport.Cells[iRowCnt - 1, 10] = "Cost Centre"; 
         xlWorkSheetToExport.Cells[iRowCnt - 1, 11] = "Reason"; 
         xlWorkSheetToExport.Cells[iRowCnt - 1, 12] = "Comment"; 
         xlWorkSheetToExport.Cells[iRowCnt - 1, 13] = "Rate Per Hour"; 
         xlWorkSheetToExport.Cells[iRowCnt - 1, 14] = "Pay"; 


         int i; 
         for (i = 0; i <= dt.Rows.Count - 1; i++) 
         { 
          xlWorkSheetToExport.Cells[iRowCnt, 1] = dt.Rows[i].Field<string>("PTLName"); 
          xlWorkSheetToExport.Cells[iRowCnt, 2] = dt.Rows[i].Field<string>("PTLStaffID"); 
          xlWorkSheetToExport.Cells[iRowCnt, 3] = dt.Rows[i].Field<string>("CampusOccurred"); 
          xlWorkSheetToExport.Cells[iRowCnt, 4] = dt.Rows[i].Field<string>("DeptOccurred"); 
          xlWorkSheetToExport.Cells[iRowCnt, 5] = dt.Rows[i].Field<string>("DateOccurred"); 
          xlWorkSheetToExport.Cells[iRowCnt, 6] = dt.Rows[i].Field<string>("CourseDetails"); 
          xlWorkSheetToExport.Cells[iRowCnt, 7] = dt.Rows[i].Field<string>("Duration"); 
          xlWorkSheetToExport.Cells[iRowCnt, 8] = dt.Rows[i].Field<decimal>("ValueOfDuration"); 
          xlWorkSheetToExport.Cells[iRowCnt, 9] = dt.Rows[i].Field<int>("Grade"); 
          xlWorkSheetToExport.Cells[iRowCnt, 10] = dt.Rows[i].Field<string>("CostCentre"); 
          xlWorkSheetToExport.Cells[iRowCnt, 11] = dt.Rows[i].Field<string>("Reason"); 
          xlWorkSheetToExport.Cells[iRowCnt, 12] = dt.Rows[i].Field<string>("Comment"); 
          xlWorkSheetToExport.Cells[iRowCnt, 13] = dt.Rows[i].Field<decimal>("RatePerHour"); 
          xlWorkSheetToExport.Cells[iRowCnt, 14] = dt.Rows[i].Field<decimal>("Pay"); 

          iRowCnt = iRowCnt + 1; 
         } 

         // FINALLY, FORMAT THE EXCEL SHEET USING EXCEL'S AUTOFORMAT FUNCTION. 
         //Excel.Range range1 = xlAppToExport.ActiveCell.Worksheet.Cells[4, 1] as Excel.Range; 
         //range1.AutoFormat(ExcelAutoFormat.xlRangeAutoFormatList3); 

         // SAVE THE FILE IN A FOLDER. 
         xlWorkSheetToExport.SaveAs(path + "ManualAdjustments.xlsx"); 

         // CLEAR. 
         xlAppToExport.Workbooks.Close(); 
         xlAppToExport.Quit(); 
         xlAppToExport = null; 
         xlWorkSheetToExport = null; 

        } 
       } 
       catch (Exception ex) 
       { 
        lblConfirm.Text = ex.Message.ToString(); 
        lblConfirm.Attributes.Add("style", "color:red; font: bold 14px/16px Sans-Serif,Arial"); 
       } 
       finally 
       { 
        sda.Dispose(); 
        sda = null; 


        //download file 

        try 
        { 
         string sPath = Server.MapPath("exportedfiles\\"); 

         Response.AppendHeader("Content-Disposition", "attachment; filename=ManualAdjustments.xlsx"); 
         Response.TransmitFile(sPath + "ManualAdjustments.xlsx"); 
         Response.End(); 
        } 
        catch (Exception ex) { } 
       } 
      } 
    } 
} 

は異なるアプローチをしようとしましたが、まだ動作していない、私はそのPC上のローカルファイルに保存しようとして行うことだと思います。これを回避する方法はありますか？

保護されたvoid btnExportMA_Click（オブジェクト送信者、EventArgs e） { string strDelimiter = "、"; 文字列cs = ConfigurationManager.ConnectionStrings ["PayrollPlusConnectionString"]。ConnectionString;

 StringBuilder sb = new StringBuilder(); 

     using (SqlConnection con = new SqlConnection(cs)) 
     { 
      SqlDataAdapter da = new SqlDataAdapter("SELECT DISTINCT ManualAdjustments.PTLName, ManualAdjustments.PTLStaffID, ManualAdjustments.CampusOccurred, ManualAdjustments.DeptOccurred, ManualAdjustments.DateOccurred, ManualAdjustments.CourseDetails, ManualAdjustments.Duration, ManualAdjustments.ValueOfDuration, ManualAdjustments.Grade, ManualAdjustments.CostCentre, ManualAdjustments.Comment, ManualAdjustments.Reason, ManualAdjustments.RatePerHour, ManualAdjustments.Pay, ManualAdjustments.PayPeriod FROM ManualAdjustments INNER JOIN PayrollPeriod ON ManualAdjustments.PayPeriod = PayrollPeriod.PayrollPeriod ORDER BY ManualAdjustments.PTLName", con); 
      DataSet ds = new DataSet(); 
      da.Fill(ds); 

      ds.Tables[0].TableName = "Manual Adjustments"; 

      foreach (DataRow MADR in ds.Tables["Manual Adjustments"].Rows) 
      { 
       string PTLName = Convert.ToString(MADR["PTLName"]); 
       sb.Append(PTLName.ToString() + strDelimiter); 

       sb.Append(MADR["PTLStaffID"].ToString() + strDelimiter); 

       sb.Append("\r\n"); 

       //add all other columns here (no delimiter in last column) 


      } 
     } 

     StreamWriter file = new StreamWriter(@"H:\ManualAdjustments.txt"); 
     file.WriteLine(sb.ToString()); 
     file.Close(); 

    } 

Answer 1

using (ExcelPackage excelPack = new ExcelPackage()) 
      { 
       // Add ExcelWorksheet ExcelWorksheet excelWorksheet = excelPack.Workbook.Worksheets.Add("NAME"); 
       // formatting ExcelWorksheet here... 
       string sPath = Server.MapPath("exportedfiles\\"); 
       string FileName =sPath + "ManualAdjustments.xlsx"; 
       FileInfo fiCustom = new FileInfo(FileName); 
       excelPack.SaveAs(fiCustom); 
       System.Diagnostics.Process.Start(FileName, "cmd"); 
      }