I just upgraded to asp.net 4.0 and when i try to update anything in my Blogengine 1.6 implementation, the syetm throws the follwoing error:

System.Web.HttpRequestValidationException: A potentially dangerous Request.Form value was detected from the client.
A potentially dangerous Request.Form value was detected from the client (Text="<p>what?</p>").
Description: Request Validation has detected a potentially dangerous client input value, and processing of the request has been aborted. This value may indicate an attempt to compromise the security of your application, such as a cross-site scripting attack. To allow pages to override application request validation settings, set the requestValidationMode attribute in the httpRuntime configuration section to requestValidationMode="2.0". Example: <httpRuntime requestValidationMode="2.0" />. After setting this value, you can then disable request validation by setting validateRequest="false" in the Page directive or in the <pages> configuration section. However, it is strongly recommended that your application explicitly check all inputs in this case.

Exception Details: System.Web.HttpRequestValidationException: A potentially dangerous Request.Form value was detected from the client


Whats the issue? and what should i do to resolve it?

thanks lot man.It's working fine

Problem NOT resolved - you just disabled security-checks for the entire Request and opened up your app, allowing anyone to post HTML to ANY of the fields on your form.

I wish I could tell you how to do this "correctly" - you have no idea how many hours I've spent on this...