A potencially dangerous Request.FormValue was detected by the client.,

I have a aynchronousFileUpload control in a userControl. When I am trying to upload a File I have got an error " A potenc开发者_如何学编程ially......". Usually when I got this error earlier on an aspx page i made validaterequest=false and then it worked ., but now i got this error with a user control any suggestions ......

Thanks in Advance

---

If you're using ASP.Net 4.0 then this might help: Change in ValidateRequest in ASP.Net 4.0