ASP.NET CheckBox does not fire CheckedChanged event when unchecking

Question

I have a CheckBox on an ASP.NET Content Form like so:

Answer 1

I'm not sure but I guess that my solution is working only for .NET Framework 4.0:

Use ViewStateMode = "Disabled" to disable view state insted of EnableViewState="false". This will caution the same behavior except that you can save a local view state.

So, on your checkbox, set the attribute ViewStateMode = "Enabled" and the problem is solved, without implementing a custom checkbox.