I am Getting those 3 error regularly

Question

Error1'
ASP.default2_aspx.GetTypeHashCode()': no suitable method found to overridec:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\Temporary ASP.NET Files\search1\322fb836\5d04e389\App_Web_q7aawit_.0.cs
Error2'

ASP.default2_aspx.ProcessRequest(System.Web.HttpContext)': no suitable method found to overridec:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\Temporary ASP.NET Files\search1\322fb836\5d04e389\App_Web_q7aawit_.0.cs
Error3'

ASP.default2_aspx' does not implement interface member 'System.Web.IHttpHandler.IsReusable'c:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\Temporary ASP.NET Files\search1\322fb836\5d04e389\App_Web_q7aawit_.0.cs