Validate for valid file name client-side

[Martin]

Hi im using RadUpload, a few days ago, I get an exception saying "A potentially dangerous Request.Files value was detected from the client", caused by an illegal character (#) in the filename. I don't want to se validateRequest=false on @page directive. I would like to validate filename client side.
How can I do that?

[Shinu]

Hello Martin,

Check the following help documentation.
Client Side Validation

-Shinu.