ProcessRequest(System.Web.HttpContext) Error in asp.net

IN ASP.NET WHILE COMPILING WE FOUND FOLLOWING ERROR SOME TIME .. BASICALLY IT OCCURRED WHEN WE CUT PASTE ALL SOURCE CODE ERROR DESCRIPTION- <pre lang="msil"> Error 1 &#39;ASP.mapstream_aspx.GetTypeHashCode()&#39;: no suitable method found to override c:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\Temporary ASP.NET Files\mapserverviewer\873018e3\324f1da0\App_Web_hka7dgu6.0.cs Error 2 &#39;ASP.mapstream_aspx.ProcessRequest(System.Web.HttpContext)&#39;: no suitable method found to override c:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\Temporary ASP.NET Files\mapserverviewer\873018e3\324f1da0\App_Web_hka7dgu6.0.cs Error 3 &#39;ASP.mapstream_aspx&#39; does not implement interface member &#39;System.Web.IHttpHandler.IsReusable&#39; c:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\Temporary ASP.NET Files\mapserverviewer\873018e3\324f1da0\App_Web_hka7dgu6.0.cs</pre> if you found error some thing like above then 1)first check out this in code behind file - public class Classname: System.Web.UI.Page 2) replace it with - public class partial Classname: System.Web.UI.Page your Problem should Solved.. -abid