DataGridView and ComboBox

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combobox

DataGridView

Here is my problem:
I have a datagridview and combobox, both populated by a datasource. The problem is that there is a hidden text field on the grid whos value should show in the combbox. I do not want this value to be a part of the datasource or added to the combobox list. I just want the following:


column 1 col 2 combobox col hidden field
a 95 cx,bx,dx,rx rx

So the hidden field value would show up in the combobox as returned from the dataset. The combobox is fine all the fields show up but i need to PASS THE HIDDEN FIELD to the combox programatically before a selection is made, So that RX is the defaulted highlighted text shown on the grid in the combobox column without .does this make sense?

1 record on the grid would look like the following
column 1 col 2 combobox col hidden field
a 95 rx(is shown) rx
and BX,RX,DX,MX
are still in the drop down list