How to add check box inside combobox in c#

Question

I want to add check box inside comboBox in C#. My purpose is that the user can select multiple values from one ComboBox ( Check all and Uncheck all ).

Please Help

Answer 1

You have to extend the ComboBox control by providing your own rendering strategy, and "manually" adding a CheckBox.

Theses open source project are ready to use :

http://www.codeproject.com/KB/combobox/CheckComboBox.aspx http://www.codeproject.com/KB/combobox/extending_combobox.aspx