I have doubt in download a text file

Question

when i download a file it is showing this type of error in catch block.My code is

 

Response.ContentType = "text/plain";
Response.AppendHeader("Content-Disposition", "attachment; filename=" + Path.GetFileName(path));
Response.WriteFile(path);
Response.End();

 

Unable to evaluate expression because the code is optimized or a native frame is on top of the call stack. 

 

how i solve this error