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ValidateRequest="false" And AJAX 4 Controls

Posted on 2011-02-14
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Last Modified: 2012-05-11
Greetings;

I'm receiving an error in the end-postback routine of an AJAX 4 control. The text field in question is allowed to accept HTML tags and the page is coded with ValidateRequest="false".

Is there a way to allow HTML tags to pass validation when text is entered into an AJAX 4 control instead of receiving a code 500 error?


Much thanks ... David
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Question by:David Bach
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Dhanasekaran Sengodan earned 2000 total points
ID: 34896568
In ASP.NET 4, by default, request validation is enabled for all requests, because it is enabled before the BeginRequest phase of an HTTP request. As a result, request validation applies to requests for all ASP.NET resources, not just .aspx page requests. This includes requests such as Web service calls and custom HTTP handlers. Request validation is also active when custom HTTP modules are reading the contents of an HTTP request.

Solution for ValidateRequest="false" Issue in .Net 4.0

To revert to the behavior of the ASP.NET 2.0 request validation feature, add the following setting in the Web.config file:

<system.web>
<httpRuntime requestValidationMode="2.0" />
</system.web>

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Author Closing Comment

by:David Bach
ID: 34900419
Greetings dhansmani;

Your answer was right on! I appreciate the fast response and excellent description of your answer.


Much thanks ... David
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