How to select (and display selection in cell) a value from a DataGridViewComboBoxColumn.

I am a developer who is new to the DataGridView object.  I have a task to modify an existing DataGridView object (myDGView), so that one of the columns displays a certain value under specific circumstances.  There are two columns in myDGView: unit and association.  Unit is a DataGridViewTextBoxColumn and association is a  DataGridViewComboBoxColumn.  The values of association are binded to a database lookup table (Values are: "X", Y", Z").  When the user changes the value of unit (column 0), I need to check all of the rows in the myDGView to determine if any association (column 1) value = "X".  If not, I must display "X" as the default selected value for the association column of the current row.  Can anyone assist?
spazjr01Asked:
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Minh Võ CôngCommented:
private void DataGridView1_CellValueChanged(
    object sender, DataGridViewCellEventArgs e)
{
    if (e.ColumnIndex == 0)
      {
            DataGridView1.Rows[e.RowIndex].Cells[e.ColumnIndex].Value = "X";
      }
}
0

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