C#Excel对象引用未设置为对象的实例

我知道有很多问题说对象引用未设置为对象的实例，但我的问题不同，但给出了相同的错误

我正在SSIS包中运行此脚本，该包位于脚本任务中 当通过visual studio 2013 professional运行时，无论是在本地还是在服务器（部署包的位置）上，它都可以很好地构建和遵守

但是，当我运行sql作业时，包失败，并在我的日志文件中写入以下错误格式化文件方法已启动。。 出现错误。请查看错误消息：对象引用未设置为对象的实例。

我无法理解为什么在服务器上它在visual studio中运行时成功构建，但在sql作业中失败

using System;
using System.Data;
using Microsoft.SqlServer.Dts.Runtime;
using System.Windows.Forms;
using System.IO;
using System.Text;
using System.Data.SqlClient;
using System.Diagnostics;
using System.Reflection;
using Excel = Microsoft.Office.Interop.Excel;
using Microsoft.CSharp;

    public void FormatFile(string sFilename)
        {

            Microsoft.Office.Interop.Excel.Application objExcelApp = new Excel.Application();
            Microsoft.Office.Interop.Excel.Workbook objExcelWbk = default(Excel.Workbook);
            Microsoft.Office.Interop.Excel.Worksheet objWrksheetGP = default(Excel.Worksheet);
            Microsoft.Office.Interop.Excel.Worksheet objWrksheetSummary = default(Excel.Worksheet);
            Microsoft.Office.Interop.Excel.Worksheet objWrksheetDetail = default(Excel.Worksheet);

            try
            {
                object missing = Missing.Value;
                int RowCount, RowCountGP, RowCountDetail;
                int cStart = 2, RowStart = 0, RowEnd = 2;


                objExcelApp.DisplayAlerts = false;
                objExcelApp.Visible = false;
                objExcelWbk = objExcelApp.Workbooks.Open(sFilename, missing, missing, missing, missing, missing, missing, missing, missing, missing, missing, missing, missing, missing, true);
                objWrksheetGP = (Excel.Worksheet)objExcelWbk.Worksheets["Template"];
                objWrksheetDetail = (Excel.Worksheet)objExcelWbk.Worksheets["Detail"];
                objWrksheetSummary = (Excel.Worksheet)objExcelWbk.Worksheets["Summary"];
                ((Microsoft.Office.Interop.Excel._Worksheet)objWrksheetDetail).Activate();
                RowCountGP = objWrksheetGP.UsedRange.Rows.Count;
                RowCount = objWrksheetDetail.UsedRange.Rows.Count;
                Excel.Range Crange, Crange1;

                Crange = (Excel.Range)objWrksheetDetail.get_Range("B2:AO" + RowCount.ToString(), missing);
                Crange.Copy(missing);
                Crange1 = (Excel.Range)objWrksheetSummary.Cells[3, 3];
                Crange1.PasteSpecial(Excel.XlPasteType.xlPasteValues, Excel.XlPasteSpecialOperation.xlPasteSpecialOperationNone, missing, missing);

                RunFormat(ref objWrksheetGP, 'B', RowCountGP, "Number");
                while (cStart <= RowCountGP)
                {
                    Crange1 = (Excel.Range)objWrksheetGP.get_Range("B" + cStart.ToString() + ":B" + cStart.ToString(), missing);
                    RowCountDetail = Convert.ToInt32(Crange1.Value2);
                    RowStart = RowEnd + 1;
                    RowEnd = RowStart + RowCountDetail - 1;
                    Crange1 = (Excel.Range)objWrksheetSummary.get_Range("A" + RowEnd.ToString() + ":AP" + RowEnd.ToString(), missing);
                    Crange1.Interior.ColorIndex = 15;
                    Crange1.Borders[Excel.XlBordersIndex.xlEdgeBottom].LineStyle = Excel.XlLineStyle.xlContinuous;
                    Crange1.Borders[Excel.XlBordersIndex.xlEdgeBottom].Weight = Excel.XlBorderWeight.xlMedium;
                    Crange1.Borders[Excel.XlBordersIndex.xlEdgeBottom].ColorIndex = Excel.XlColorIndex.xlColorIndexAutomatic;
                    cStart = cStart + 1;
                }

                //Commented line of code as this is not present is vb code from which code is regenerated.
                /*Crange = objWrksheetDetail.get_Range("E2:E" + RowCount.ToString(), missing);
                Crange1 = objWrksheetSummary.get_Range("E3:E" + (RowCount + 1).ToString(), missing);
                Crange1.Value2 = Crange.Value2;*/

                Crange1 = objWrksheetSummary.get_Range("D2:E" + RowCount.ToString(), missing);
                Crange1.Font.Bold = true;

                Crange1 = objWrksheetSummary.get_Range("D2:D" + (RowCount + 1).ToString(), missing);
                Crange1.Borders[Excel.XlBordersIndex.xlEdgeRight].LineStyle = Excel.XlLineStyle.xlContinuous;
                Crange1.Borders[Excel.XlBordersIndex.xlEdgeRight].Weight = Excel.XlBorderWeight.xlMedium;
                Crange1.Borders[Excel.XlBordersIndex.xlEdgeRight].ColorIndex = Excel.XlColorIndex.xlColorIndexAutomatic;

                Crange1 = objWrksheetSummary.get_Range("E2:E" + (RowCount + 1).ToString(), missing);
                Crange1.Borders[Excel.XlBordersIndex.xlEdgeRight].LineStyle = Excel.XlLineStyle.xlContinuous;
                Crange1.Borders[Excel.XlBordersIndex.xlEdgeRight].Weight = Excel.XlBorderWeight.xlMedium;
                Crange1.Borders[Excel.XlBordersIndex.xlEdgeRight].ColorIndex = Excel.XlColorIndex.xlColorIndexAutomatic;

                Crange1 = objWrksheetSummary.get_Range("I2:I" + (RowCount + 1).ToString(), missing);
                Crange1.Borders[Excel.XlBordersIndex.xlEdgeRight].LineStyle = Excel.XlLineStyle.xlContinuous;
                Crange1.Borders[Excel.XlBordersIndex.xlEdgeRight].Weight = Excel.XlBorderWeight.xlMedium;
                Crange1.Borders[Excel.XlBordersIndex.xlEdgeRight].ColorIndex = Excel.XlColorIndex.xlColorIndexAutomatic;

                Crange1 = objWrksheetSummary.get_Range("L2:L" + (RowCount + 1).ToString(), missing);
                Crange1.Borders[Excel.XlBordersIndex.xlEdgeRight].LineStyle = Excel.XlLineStyle.xlContinuous;
                Crange1.Borders[Excel.XlBordersIndex.xlEdgeRight].Weight = Excel.XlBorderWeight.xlMedium;
                Crange1.Borders[Excel.XlBordersIndex.xlEdgeRight].ColorIndex = Excel.XlColorIndex.xlColorIndexAutomatic;

                Crange1 = objWrksheetSummary.get_Range("O2:O" + (RowCount + 1).ToString(), missing);
                Crange1.Borders[Excel.XlBordersIndex.xlEdgeRight].LineStyle = Excel.XlLineStyle.xlContinuous;
                Crange1.Borders[Excel.XlBordersIndex.xlEdgeRight].Weight = Excel.XlBorderWeight.xlMedium;
                Crange1.Borders[Excel.XlBordersIndex.xlEdgeRight].ColorIndex = Excel.XlColorIndex.xlColorIndexAutomatic;

                Crange1 = objWrksheetSummary.get_Range("R2:R" + (RowCount + 1).ToString(), missing);
                Crange1.Borders[Excel.XlBordersIndex.xlEdgeRight].LineStyle = Excel.XlLineStyle.xlContinuous;
                Crange1.Borders[Excel.XlBordersIndex.xlEdgeRight].Weight = Excel.XlBorderWeight.xlMedium;
                Crange1.Borders[Excel.XlBordersIndex.xlEdgeRight].ColorIndex = Excel.XlColorIndex.xlColorIndexAutomatic;

                Crange1 = objWrksheetSummary.get_Range("U2:U" + (RowCount + 1).ToString(), missing);
                Crange1.Borders[Excel.XlBordersIndex.xlEdgeRight].LineStyle = Excel.XlLineStyle.xlContinuous;
                Crange1.Borders[Excel.XlBordersIndex.xlEdgeRight].Weight = Excel.XlBorderWeight.xlMedium;
                Crange1.Borders[Excel.XlBordersIndex.xlEdgeRight].ColorIndex = Excel.XlColorIndex.xlColorIndexAutomatic;

                Crange1 = objWrksheetSummary.get_Range("X2:X" + (RowCount + 1).ToString(), missing);
                Crange1.Borders[Excel.XlBordersIndex.xlEdgeRight].LineStyle = Excel.XlLineStyle.xlContinuous;
                Crange1.Borders[Excel.XlBordersIndex.xlEdgeRight].Weight = Excel.XlBorderWeight.xlMedium;
                Crange1.Borders[Excel.XlBordersIndex.xlEdgeRight].ColorIndex = Excel.XlColorIndex.xlColorIndexAutomatic;

                Crange1 = objWrksheetSummary.get_Range("AA2:AA" + (RowCount + 1).ToString(), missing);
                Crange1.Borders[Excel.XlBordersIndex.xlEdgeRight].LineStyle = Excel.XlLineStyle.xlContinuous;
                Crange1.Borders[Excel.XlBordersIndex.xlEdgeRight].Weight = Excel.XlBorderWeight.xlMedium;
                Crange1.Borders[Excel.XlBordersIndex.xlEdgeRight].ColorIndex = Excel.XlColorIndex.xlColorIndexAutomatic;

                Crange1 = objWrksheetSummary.get_Range("AD2:AD" + (RowCount + 1).ToString(), missing);
                Crange1.Borders[Excel.XlBordersIndex.xlEdgeRight].LineStyle = Excel.XlLineStyle.xlContinuous;
                Crange1.Borders[Excel.XlBordersIndex.xlEdgeRight].Weight = Excel.XlBorderWeight.xlMedium;
                Crange1.Borders[Excel.XlBordersIndex.xlEdgeRight].ColorIndex = Excel.XlColorIndex.xlColorIndexAutomatic;

                Crange1 = objWrksheetSummary.get_Range("AG2:AG" + (RowCount + 1).ToString(), missing);
                Crange1.Borders[Excel.XlBordersIndex.xlEdgeRight].LineStyle = Excel.XlLineStyle.xlContinuous;
                Crange1.Borders[Excel.XlBordersIndex.xlEdgeRight].Weight = Excel.XlBorderWeight.xlMedium;
                Crange1.Borders[Excel.XlBordersIndex.xlEdgeRight].ColorIndex = Excel.XlColorIndex.xlColorIndexAutomatic;

                Crange1 = objWrksheetSummary.get_Range("AJ2:AJ" + (RowCount + 1).ToString(), missing);
                Crange1.Borders[Excel.XlBordersIndex.xlEdgeRight].LineStyle = Excel.XlLineStyle.xlContinuous;
                Crange1.Borders[Excel.XlBordersIndex.xlEdgeRight].Weight = Excel.XlBorderWeight.xlMedium;
                Crange1.Borders[Excel.XlBordersIndex.xlEdgeRight].ColorIndex = Excel.XlColorIndex.xlColorIndexAutomatic;

                Crange1 = objWrksheetSummary.get_Range("AM2:AM" + (RowCount + 1).ToString(), missing);
                Crange1.Borders[Excel.XlBordersIndex.xlEdgeRight].LineStyle = Excel.XlLineStyle.xlContinuous;
                Crange1.Borders[Excel.XlBordersIndex.xlEdgeRight].Weight = Excel.XlBorderWeight.xlMedium;
                Crange1.Borders[Excel.XlBordersIndex.xlEdgeRight].ColorIndex = Excel.XlColorIndex.xlColorIndexAutomatic;

                Crange1 = objWrksheetSummary.get_Range("AP2:AP" + (RowCount + 1).ToString(), missing);
                Crange1.Borders[Excel.XlBordersIndex.xlEdgeRight].LineStyle = Excel.XlLineStyle.xlContinuous;
                Crange1.Borders[Excel.XlBordersIndex.xlEdgeRight].Weight = Excel.XlBorderWeight.xlMedium;
                Crange1.Borders[Excel.XlBordersIndex.xlEdgeRight].ColorIndex = Excel.XlColorIndex.xlColorIndexAutomatic;


                objWrksheetDetail.Visible = Excel.XlSheetVisibility.xlSheetHidden;
                objWrksheetGP.Visible = Excel.XlSheetVisibility.xlSheetHidden;
                objExcelWbk.Save();
                objExcelWbk.Close(true, missing, missing);
                objExcelApp.Quit();
            }
            catch
            {
                System.Runtime.InteropServices.Marshal.ReleaseComObject(objExcelWbk);
                System.Runtime.InteropServices.Marshal.ReleaseComObject(objExcelApp);
                throw;
            }
            finally
            {
                System.Runtime.InteropServices.Marshal.ReleaseComObject(objExcelWbk);
                System.Runtime.InteropServices.Marshal.ReleaseComObject(objExcelApp);
                System.GC.Collect();
            }
        }

使用系统；
使用系统数据；
使用Microsoft.SqlServer.Dts.Runtime；
使用System.Windows.Forms；
使用System.IO；
使用系统文本；
使用System.Data.SqlClient；
使用系统诊断；
运用系统反思；
使用Excel=Microsoft.Office.Interop.Excel；
使用Microsoft.CSharp；
公共void格式文件（字符串sFilename）
{
Microsoft.Office.Interop.Excel.Application objExcelApp=新建Excel.Application（）；
Microsoft.Office.Interop.Excel.Workbook objExcelWbk=默认值（Excel.Workbook）；
Microsoft.Office.Interop.Excel.Worksheet objWrksheetGP=默认值（Excel.Worksheet）；
Microsoft.Office.Interop.Excel.Worksheet objWrksheetSummary=默认值（Excel.Worksheet）；
Microsoft.Office.Interop.Excel.Worksheet objWrksheetDetail=默认值（Excel.Worksheet）；
尝试
{
缺少对象=缺少.Value；
int RowCount、RowCountGP、RowCountDetail；
int cStart=2，RowStart=0，RowEnd=2；
objExcelApp.DisplayAlerts=false；
objExcelApp.Visible=false；
objExcelWbk=objExcelApp.Workbooks.Open（sFilename、missing、missing、missing、missing、missing、missing、missing、missing、missing、missing、missing、true）；
objWrksheetGP=（Excel.Worksheet）objExcelWbk.Worksheets[“模板”]；
objWrksheetDetail=（Excel.Worksheet）objExcelWbk.Worksheets[“Detail”]；
objWrksheetSummary=（Excel.Worksheet）objExcelWbk.Worksheets[“摘要”]；
（（Microsoft.Office.Interop.Excel._工作表）objWrksheetDetail）.Activate（）；
RowCountGP=objWrksheetGP.UsedRange.Rows.Count；
RowCount=objWrksheetDetail.UsedRange.Rows.Count；
Excel.范围起重机，起重机1；
Crange=（Excel.Range）objWrksheetDetail.get_Range（“B2:AO”+RowCount.ToString（），缺失）；
起重机。副本（缺失）；
Crange1=（Excel.Range）objWrksheetSummary.Cells[3,3]；
Crange1.PasteSpecial（Excel.XlPasteType.xlPasteValues，Excel.XlPasteSpecialOperation.xlPasteSpecialOperationNone，缺失，缺失）；
运行格式（参考objWrksheetGP，‘B’，行计数GP，“编号”）；
虽然（cStart我想指出，在这种情况下，Office interop是由Microsoft使用的。@CharlesMager我使用的Office版本是2010，其他一些软件包也使用Microsoft.Office.interop.Excel，它们运行良好，但由于KB文章中列出的所有原因，仍然不建议使用它。有很多托管替代软件ves（这也有速度快得多的好处）。如果要解决此问题，需要对其进行调试以确定空值。@CharlesMager我检查了变量并成功构建了它。在运行sql作业时，是否有方法进行调试？