Server Error in '/' Application.
A potentially dangerous Request.Form value was detected from the client ((ctl00$ContentPlaceHolder1$txtanalyaticcode=")
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. For more information, see http://go.microsoft.com/fwlink/?LinkId=153133.
Exception Details: System.Web.HttpRequestValidationException: A potentially dangerous Request.Form value was detected from the client (ctl00$ContentPlaceHolder1$txtanalyaticcode="
it works fine in local as well as staging site but it gives error on live site. i googled for the same error and found solution to write ValidateRequest="false" and EnableEventValidation=false in my page. but it doen't working.
Thanks for the reply. i have just found my solution.your are also right it was problem due to "<" and <script> tag.so i statically write <script> tag where i want it and then get dynamically js code between <script> tag.it works fine.
This error is generated by ASP.NET to avoid cross site scripting issues.
The solution is to set
<pages validateRequest="false" />
If your .NET runtime is 4.0 or above:
add the following to web.config: