no suitable method found to override

I have this error in c# code that I don't normally see. Here it is...

        public override int GetTypeHashCode() {
            return 960292456;

Error      1      'ASP.admin_systems_and_versions_aspx.GetTypeHashCode()':
no suitable method found to override      
c:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\Temporary ASP.NET Files\
teststatus2production\7e352623\d1efa770\App_Web_xslh3hfa.0.cs      516

I tried removing the temporary files and that did not work.
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Have you imported System.Web.UI namespace?
drlewickiAuthor Commented:
Where? These are crazy files I've never heard of.
Put the name of the partial class (aspx.cs) in the inherits attribute of Page tag in aspx page. For e.g
Partial class XYZ inherits System.Web.UI.Page
Put XYZ in aspx page
<@Page .............. inherits="XYZ">
drlewickiAuthor Commented:
I went another way with the code

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