Hi Najmesh,
You need to override the functionality of the combobox. I have faced same problem in the past and used 3rd party combobox.
Please refer to following link :
CheckBox ComboBox Extending the ComboBox Class and Its Items[
^]
I think this link will solve your problem. I have implemented this combo box into my windows application.
I hope this will help you.
Let me know if you have any questions.
Thanks,
Kruti Shukla
MCP | MCTS