title: A potentially dangerous Request.Form value was detected from the client,After converting 3.5 to 4.0 ver
body: <p>I have converted my web application from 3.4 to 4.0, Its converted and working, But in text box when i am giving some space and trying to save the data it is showing the error. A potentially dangerous Request.Form value was detected from the client (PageContent$DisplayTextMode$txbText="as b g<br />").</p>
  
  <p>in web.cofig, I already added  </p>
  
  <pre><code>   &lt;compilation debug="true" targetFramework="4.0"&gt;
     &lt;httpRuntime requestValidationMode="2.0" /&gt;
     &lt;pages validateRequest="false" maintainScrollPositionOnPostBack="true" enableEventValidation="false" controlRenderingCompatibilityVersion="3.5" clientIDMode="AutoID"&gt;
  </code></pre>
  
  <p>in previous version(3.5) every thing was working fine, I was not getting any error.</p>
  
  <p>how to solve this?  </p>