Restore clientside file list

[Jason Rosensweig]

I have an asyncupload control on a form. When the user submits the form, I validate the other form fields server-side and return a message to the user if one or more fields fails that validation. If all of the fields pass, the postback uploads the file as intended. However, if I fail the validation, the asyncupload control file list is cleared. Is there a way to retain the clientside list so the user doesn't have to re-upload the file if I fail the validation? Here is the code that I used for the upload:

protected void upAttachment_FileUploaded(object sender, FileUploadedEventArgs e)
{
    if (MessageSent)
    {
        byte[] buffer = new byte[e.File.ContentLength];
        using (Stream stream = e.File.InputStream)
        {
            stream.Read(buffer, 0, e.File.ContentLength);

            using (BinaryWriter bWriter = new BinaryWriter(File.Open(UploadDir + "\\" + e.File.FileName, FileMode.Create)))
            {
                bWriter.Write(buffer);
            }
        }
    }
}

[Genady Sergeev]

Hello Jason Rosensweig,

Yes, there is a way to do that. I am attaching a sample project that demonstrates how to preserve files across postbacks. The project uses the latest DLL, if you version is an earlier one, please specify it and I we will prepare another sample.

Greetings,
Genady Sergeev
the Telerik team

[Maxi]

Hello, i have the 2011 q3 version, and i want to know if you have an example for the version im using, because the actual example is not working, its throws an error in line var row = upload._appendStyledRow();

thank you.