Question

I am in need of a DataGridViewComboBoxColumn that displays a multi-column grid drop down, similar to the one described here. Basically, I need to override the DropDown event of the underlying ComboBox. The example at the bottom of this page shows how I can add event handlers. But, I need to override the showing of the drop down. I’m guessing I need to create my own ComboBox class but how do I connect that with a DataGridViewComboBoxColumn? Has anyone done something similar?

Answer 1

I ended up finding the following on MSDN that outlines how to create a custom DataGridView column. This includes creating a cell type, a column type, and an Editing control type. I ended up using a ListView control inside a form with no borders as my drop down grid.

http://msdn.microsoft.com/en-us/library/aa730881(v=vs.80).aspx