I am looking for a custom control which could enable me to call message of following type.

<http://extjs.com/deploy/dev/examples/message-box/msg-box.html>

Is there a control which function like a .NET desktop application messagebox?

I know, exactly similar may not be possible but main features I am looking for here is returning value of clicked button and custom value entered by user in code behind.

I have also started working on it myself, but hardly any luck so far.. any direction in this case will also be very useful.