Possible Duplicate:
A potentially dangerous Request.Form value was detected from the client
A potentially dangerous Request.Form value was detected from the client (ctl00$ContentPlaceHolder1$txtPickUpOrderInstruction=”…x the mail
1 x the mirrorValidateRequest=”false”. 2. I have too many textboxes so Server.HtmlEncode(TestString);.Method is not possible.Its development is over.Re work i have to reduce.
But i want to restrict the user to enter these special characters?(Scripts or function-in master page that will do the same)
You can use tagmapping for this.Check out the following links for more detail
Tag mapping in ASP.NET
tagMapping Element for pages (ASP.NET Settings Schema)