Custom Server Controls :: How To Use An User Control In A .cs File Located App_Code Folder

Jun 21, 2010

I create a user control named ExampleControl and add <%@ Register src="ExampleControl.ascx" tagname="ExampleControl" tagprefix="uc1" %> to aa.aspx file So I can use ExampleControl cw = Panel1.FindControl("ExampleControl1") as ExampleControl in the file aa.aspx.cs

Now I hope to use ExampleControl cw = Panel1.FindControl("ExampleControl1") as ExampleControl in a .CS file located App_Code folder, but I get the following error, how can I do?

Error 4 The type or namespace name 'ExampleControl' could not be found (are you missing a using directive or an assembly reference?)

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