Problem using windows form control in asp.net 2.0 [modified]

[alav]

Dear All, Iam using Visual Studio 2005. I create a control in windows form, make it as a dll file, refer it on the website folder thru Asp.Net 2.0. It works well. But if once i made change in the dll source , recompile it, then refer it on the same website folder thru Asp.Net 2.0, it does't works. I mean the control contained in the dll file is not even visible to the site(aspx file). What i made wrong? Please could any body solve this problem? -- modified at 10:04 Saturday 23rd December, 2006