Lance Zhang's Blog

By default .Net framework provides a default DefaultWsdlHelpGenerator.aspx under \Microsoft.Net\Framework\\Config
you can override it in your application by change the web.config.

<?xml version="1.0" encoding="utf-8"?>
<configuration>
<system.web>
<webServices>
<wsdlHelpGenerator href="MyServiceDescriptionGenerator.aspx"/>
</webServices>
</system.web>
</configuration>