RadAsynchronus Upload AllowedFileExtensions is not validating

[Jobin]

I have an Aspx page with tabstrip having RadMultiPageView control having 4 tabs on the page and various telerik/.net controls like dropdonw,RadAsynchronusUpload, textbox etc on each tab.In RadAsynchronus Upload i Validated with File Extension Filtration.But it is not Validated so that i can select any filetypes.currently it is in second tab,and selected tab index is 0.if i place it in first tab it is working.i Don't know where i went wrong.Any Help would be Appreciated.
Thanks
jobin

[Peter Filipov]

Hello Jobin,

When RadAsyncUpload is using the Silverlight/Flash module it is possible to filter the file dialog. Sometimes the dialog filter is not working with the Silverlight module and unfortunately that issue is out of our hands. Even though if you select a file with other extension than AllowedFileExtensions the file will become invalid.

All the best,
Peter Filipov
the Telerik team

[Jobin]

Hi Peter,

              Since we are using ASP.NET WebApplication.Is it applicable to Normal aspx  Webforms?

[Peter Filipov]

Hello Jobin,

RadAsyncUpload can be used in a normal .aspx web form. If your browser has silverlight installed, RadAsyncUpload will work with Silverlight module to upload files(applicable for all Telerik.Web.UI.dll versions before 2011.09.15). In case with no silverlight, RadAsyncUpload will work with FileApi/Flash/IFrame module.

Greetings,
Peter Filipov
the Telerik team