ASP.NET AJAX DropDownExtender - Tips and Tricks

(Suprotim Agarwal) The DropDownExtender is an ASP.NET AJAX control that can be attached to almost any ASP.NET control to provide a drop-down menu. For example: If you have a TextBox and a Panel control (with a checkboxlist), and you want to give the TextBox a drop-down menu, then just apply the DropDownExtender to the TextBox and set the DropDownControlID to the Panel. In this article, we will see some tips and tricks that can be applied to a DropDownExtender control.

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