how to handle when User inter Tag of Html into Textbox for example

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how to handle when User inter Tag of Html into Textbox for example Insert br <br/>
asp.net show Error.
how to Handle it?

Posted 26-Sep-12 2:46am

Seyed Ahmad Mirzaee

Updated 26-Sep-12 4:54am

fjdiewornncalwe

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TanvirRaihan · Answer 1 · 2012-09-26T03:01:00

Put ValidateRequest="false" in your page, like ...

"<%@ Page Title="" ValidateRequest="false" Language="C#" MasterPageFile..."

This will prevent throwing error. But this also open an opportunity for an attacker to inject script in you application, so you should also use Server.HtmlEncode() to protect your page

Hope this will help you