Click here to Skip to main content
15,063,287 members
Please Sign up or sign in to vote.
3.67/5 (2 votes)
See more:
Hello,

I am trying to get excel sheet from gridview. Following is my code:

string excelXml = GetExcelXml(dsInput, filename);
response.Clear();
response.AppendHeader("Content-Type", "application/vnd.ms-excel");
response.AppendHeader("Content-disposition", "attachment;
filename=" + filename);
response.Write(excelXml);
response.Flush();
response.End();


I am getting exception as "[System.Threading.ThreadAbortException] = {Unable to evaluate expression because the code is optimized or a native frame is on top of the call stack.}"

If i remove response.End() i don't see the exception.

What is purpose of response.End().. Why is it throwing error and should I keep it in my code?
Posted

   
Comments
Member 8805858 13-Jun-12 7:12am
   
Use try catch

try
{
your code
}

catch(ThreadAbortException)
{}
Here is the alternate solution,

C#
System.Text.StringBuilder sb = new System.Text.StringBuilder();
sb.Append(GetExcelXml(dsInput, filename));
response.Clear();
System.Web.HttpContext.Current.Response.AddHeader("Content-Disposition", "attachment;filename=" + fileName);
response.Write(sb.ToString());
Response.End();


Hope this may help you...
   
Comments
tejashri.gandhi 16-Jan-12 4:37am
   
Thanks Mukund,
I will try this
   
Comments
Nagamuneendra reddy 23-Jan-12 7:14am
   
Even we changed System.Web.HttpContext.Current.Response instead of Response,still it is showing same exception.If it could possible please look into my code what i posted with my question.It is purely related to report exporting into a PDF.
I know its very old question but may be helpful for others...

The Response.End method ends the page execution and shifts the execution to the Application_EndRequest event in the application's event pipeline. The line of code that follows Response.End is not executed.

Instead of Response.End(), use HttpContext.Current.ApplicationInstance.CompleteRequest()

string excelXml = GetExcelXml(dsInput, filename);
     response.Clear();
     response.AppendHeader("Content-Type", "application/vnd.ms-excel");
     response.AppendHeader("Content-disposition", "attachment;
     filename=" + filename);
     response.Write(excelXml);
     response.Flush();
     //response.End();
     HttpContext.Current.ApplicationInstance.CompleteRequest();


Source: Microsoft official website[^]
   
v2
Replace response.End(); with HttpContext.Current.ApplicationInstance.CompleteRequest();
   

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)




CodeProject, 20 Bay Street, 11th Floor Toronto, Ontario, Canada M5J 2N8 +1 (416) 849-8900