Combo box with multi selection option

[XYZ]

Hi, 

I want combo box, with multiple selection.

How can I achieve this ?

Thanks

[Shai Almog]

Hi,
ComboBox is not designed for that.
I would suggest using a button and styling it to look like a combo box. Then just show a popup dialog with a set of checkboxes or even a checkbox multilist (I'd use the former) then update the text of the parent button based on checkbox selection.