ASP.Net Download file to client browser

asp.net, browser, download, response.write

Solution

Try changing it to.

 Response.Clear();
 Response.ClearHeaders();
 Response.ClearContent();
 Response.AddHeader("Content-Disposition", "attachment; filename=" + file.Name);
 Response.AddHeader("Content-Length", file.Length.ToString());
 Response.ContentType = "text/plain";
 Response.Flush();
 Response.TransmitFile(file.FullName);
 Response.End();

Problem

I'm writing a simple test page to download a text file from a browser on button click. I am getting a really strange error that I have never seen before. Any thoughts? The error occurs on `Response.End();` and the file never gets to the client browser Code: ``` string filePath = "C:\\test.txt"; FileInfo file = new FileInfo(filePath); if (file.Exists) { Response.ClearContent(); Response.AddHeader("Content-Disposition", "attachment; filename=" + file.Name); Response.AddHeader("Content-Length", file.Length.ToString()); Response.ContentType = "text/plain"; Response.TransmitFile(file.FullName); Response.End(); } ``` Error: Unable to evaluate expression because the code is optimized or a native frame is on top of the call stack.

Original source