UploadedFile file = UploadedFile.FromHttpPostedFile(Request.Files[inputFile.UniqueID]); always returns null

[bdk0172]

I'm trying to implement the file upload with RadProgressManager and RadProgressArea based on your demo.  After selecting a file in the input control and clicking on the Submit button, "UploadedFile file = UploadedFile.FromHttpPostedFile(Request.Files[inputFile.UniqueID]);" is always null.  These controls are inside of an asp:UpdatePanel on a page that is using an asp:ScriptManager.  Not sure if that would cause any problems.

[Genady Sergeev]

Hello bdk0172,

The way you obtain the uploaded files is not correct. You should use the UploadedFiles collection of the RadUpload component. Example:

foreach(UploadedFile file in RadUpload1.UploadedFiles)
{
     string name = file.FileName;
}

Secondly, it is not possible to upload files using AJAX. This is a limitation of the XmlHttpRequest component, used in all AJAX frameworks for asynchronous calls to the application. In order to upload a file your application must perform a full page postback. More information on the topic can be found here.

All the best,
Genady Sergeev
the Telerik team

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[bdk0172]

Adding the trigger to the UpdatePanel did the trick.  Thanks for your help.