register assembly in application page

Question

I have created a custom Button with some extra properties. I want to register it in my Application Page like this

<%@ Register Namespace="Test1.Test2.Helpers" Assembly="Test1.Test2" TagPrefix="test" %>

But it casts an exception and saying something like it cannot find the assembly.

Answer 1

You need to deploy the assembly to GAC and use the fully qualified Name in assembly tag as:

<%@ Register Tagprefix="MyControls" 
    Namespace="KM.MyControls.MyControl" 
    Assembly="KM.MyControls, Version=1.0.0.0, Culture=neutral, PublicKeyToken=<Your token>" %>

Then you can reference your User Control

   <MyControls:MyUserControl runat="server"/>