如何将C＃处理程序文件作为jquery自动完成的URL

I am creating a custom control in asp.net . In the control itself i have to call the url for getting results for autocomplete. But both .aspx, .ashx file format are not supported by class library. Is there any other format for substituite of the above to redirect inside the class library. I am creating a custom control in asp.net . In