Asp.net with C#

[Edel Jose]

How to Auotopopulate values into textbox when I enter value in the first textbox?

[Frinavale]

There is an Ajax control that is part of the free Ajax Control Toolkit that will help you accomplish this. It's the AutoComplete extender.

Or you could implement your own using an UpdatePanel and the TextBox's on text changed event.

-Frinny