RPC服务器不可用。 （来自HRESULT的异常：0x800706BA）-Excel

Question

我试图使用asp.net c＃将数据写入excel模板文件。但是我得到了以下例外。

ExceptionType：“ System.Runtime.InteropServices.COMException” 消息：“ RPC服务器不可用。（HRESULT异常：0x800706BA）”

有时它适用于少量的行。我找不到问题所在。

try
{

int rowNumber = 5;  

DataSet ds = ClsSystem.getReviewResponse();     

Excel.Application myExcelApplication = null;
Excel.Workbook myExcelWorkbook = null ;
Excel.Worksheet myExcelWorkSheet = null;

//copy template
System.IO.File.Copy(excelFilePath, NewExcelFilePath);

myExcelApplication = new Excel.Application(); 
myExcelApplication.DisplayAlerts = false; 

myExcelWorkbook = (Excel.Workbook(myExcelApplication.Workbooks._Open(NewExcelFilePath, System.Reflection.Missing.Value,
            System.Reflection.Missing.Value, System.Reflection.Missing.Value, System.Reflection.Missing.Value,
            System.Reflection.Missing.Value, System.Reflection.Missing.Value, System.Reflection.Missing.Value,
            System.Reflection.Missing.Value, System.Reflection.Missing.Value, System.Reflection.Missing.Value,
            System.Reflection.Missing.Value, System.Reflection.Missing.Value)); // open the existing excel file

myExcelWorkSheet = (Excel.Worksheet)myExcelWorkbook.Worksheets[1]; 
myExcelWorkSheet.Name = "Test sheet";

for (int n = 0; n < ds.Tables.Count; n++)
    {
        for (int i = 0; i < ds.Tables[n].Rows.Count; i++)
        {

            myExcelWorkSheet.Cells[rowNumber, "A"] = ds.Tables[n].Rows[i]["HeaderID"].ToString();
            myExcelWorkSheet.Cells[rowNumber, "B"] = ds.Tables[n].Rows[i]["ResponseID"].ToString();
            myExcelWorkSheet.Cells[rowNumber, "C"] = ds.Tables[n].Rows[i]["Region"].ToString();
            myExcelWorkSheet.Cells[rowNumber, "D"] = ds.Tables[n].Rows[i]["Sector"].ToString();
            myExcelWorkSheet.Cells[rowNumber, "E"] = ds.Tables[n].Rows[i]["Facility"].ToString();
            myExcelWorkSheet.Cells[rowNumber, "F"] = ds.Tables[n].Rows[i]["Program"].ToString();
            myExcelWorkSheet.Cells[rowNumber, "G"] = ds.Tables[n].Rows[i]["AuditDate"].ToString();
            myExcelWorkSheet.Cells[rowNumber, "H"] = ds.Tables[n].Rows[i]["Auditor1"].ToString();

            rowNumber++;
        }
        rowNumber++;
    }

    try
        {
            myExcelWorkbook.SaveAs(NewExcelFilePath, System.Reflection.Missing.Value, System.Reflection.Missing.Value, System.Reflection.Missing.Value,
             System.Reflection.Missing.Value, System.Reflection.Missing.Value, Excel.XlSaveAsAccessMode.xlExclusive,
             System.Reflection.Missing.Value, System.Reflection.Missing.Value, System.Reflection.Missing.Value,
                System.Reflection.Missing.Value, System.Reflection.Missing.Value); // Save data in excel


            myExcelWorkbook.Close(true, NewExcelFilePath, System.Reflection.Missing.Value); // close the worksheet
            myExcelApplication.Quit();


        }
        catch (Exception ex)
        {
            throw ex;
        }
        finally
        {
            if (myExcelWorkSheet != null) Marshal.ReleaseComObject(myExcelWorkSheet);

            if (myExcelWorkbook != null) Marshal.ReleaseComObject(myExcelWorkbook);

            if (myExcelApplication != null) Marshal.ReleaseComObject(myExcelApplication);
        }
  }
  catch (Exception ex)
    {
        if (myExcelApplication != null)
        {
            myExcelApplication.Quit(); // close the excel application
        }

        throw ex;
    }

我想一次写500多行。

Answer 1

不要完全动摇您的开发道路，但是我发现互操作库非常不可靠。我在ClosedXML方面取得了更大的成功。我每天写成千上万的行，并且从未遇到过与ClosedXML相关的问题。 https://github.com/ClosedXML/ClosedXML