not on top of call stack ?!

[Mario]

Hy i have a rad grid, which im using a RadMenu as a context menu with it. All works fine.

The Radmenu Command calls the method "OpenFile(int id)" in the code behind file to as u correctly guess should opens a already on the server stored file in a file stream to the client.

Heres the method:

private void OpenFile(int id)
        {
            try
            {
                Document doc = BLDocument.GetDocument(id);

                if (File.Exists(doc.Metainformation.filepath))
                {
                    // Create New instance of FileInfo class to get the properties of the file being downloaded
                    FileInfo file = new FileInfo(doc.Metainformation.filepath);

                    // Clear the content of the response
                    Response.ClearContent();

                    // LINE1: Add the file name and attachment, which will force the open/cance/save dialog to show, to the header
                    Response.AddHeader("Content-Disposition", "attachment; filename=" + file.Name);

                    // Add the file size into the response header
                    Response.AddHeader("Content-Length", file.Length.ToString());

                    // Set the ContentType
                    Response.ContentType = ReturnExtension(file.Extension.ToLower());

                    // Write the file into the response (TransmitFile is for ASP.NET 2.0. In ASP.NET 1.1 you have to use WriteFile instead)
                    Response.TransmitFile(file.FullName);

                    // End the response
                    Response.End();
                }
            }
            catch (Exception ex)
            {

            }
        }

After i reach the Reespnse.End(); line i get following exception:

((System.Threading.ThreadAbortException)(ex)):


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

Is there any propertie i have to set to be able to give my user the file / filestream ?
Or what can i do to make it work properly?

thx mario

[Atanas Korchev]

Hi Mario,

Response.End() always triggers the ThreadAbortException. You can check this page for additional info.

All the best,
Atanas Korchev
the Telerik team

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[Mario]

I had enabled (added) the Context Menu (im using with my radgrid) with Ajax which runs a thread and so it has a problem ending the thread.

When i dont add the calling button control to ajaxmanager it works.

PS.:

Also read that some people have problems debugging it with their Visual Studio, when they Resonse.End in a try catch block, but thats only a problem with a wrongly configured Visual Studio.

thx Mario

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