Handle the server-side ValueChanged event of WebDateChooser, and call your desired method there.
Thanks for the reply.
But it is not allowing me to add ValueChanged event in Initialize() method of page. Can you please explain with example.
I'm not sure what you mean, and I'm not able to provide an example in a timely fashion. I suggest that you submit a support request to explain what you're doing and what results you're getting, and to request an example. If you include a sample project that we can run and debug, we might more easily be able to determine what's going on.