How to set selected item when combobox is bound to dictionary

[doubler]

This seems like it should be fairly simple, but it has me stumped.

I have a combobox that is bound to a dictionary. I also have a datagridview that is supposed to populate the combobox when a row is selected. The gridview displays the key which is numeric and I want the combobox to display the value which is text. I thought this would work:

cboSourceID.SelectedItem = dgvInfoware.Item(3, rowIndex).Value

It doesn't. I also thought maybe I needed to set the value member to the new key, but that deleted everything in the combobox.

[PsychoCoder]

Not knowing exactly how you're binding your ComboBox to your Dictionary have you tried the SelectedValue of the combobox, like this:

cboSourceID.SelectedValue = dgvInfoware.Item(3, rowIndex).Value

[doubler]

That doesn't work either. This is how I did the bind.

 cboSourceID.BindingContext = New BindingContext
 cboSourceID.DataSource = New BindingSource(dictIDs, Nothing)
 cboSourceID.DisplayMember = "Value"
 cboSourceID.ValueMember = "Key"