DataGridViewComboBoxColumn question

I have a datagridviewcomboboxcolumn that I am populating this way :

Code:

---

'---------------------------------------------------------------------
' If person is editing a record, their previous choice should always be the first
' in the list
'---------------------------------------------------------------------
If intNameKey <> 0 Then       
    strSql = "select '1' as sort_seq, name_key, species from species " & _
                "where name_key = " & intNameKey & " " & _
                "  and upper(name_type) = 'FISH' " & _
                "union " & _
                "select '2' as sort_seq, name_key, species from species " & _
                "where name_key <> " & intNameKey & " " & _
                "  and upper(name_type) = 'FISH' " & _
                "order by sort_seq, species"
End If

'---------------------------------------------------------------------
' If person is adding a record, show fish in alpha order.
'---------------------------------------------------------------------
If intNameKey = 0 Then       
    strSql = "select '1' as sort_seq, name_key, species from species " & _
              "where upper(name_type) = 'FISH' order by species"
End If

objDA = New SqlDataAdapter(strSql, objConn)
objDS = New DataSet
objDA.Fill(objDS, "species")
objConn.Close()

With Me.cboSpecies    (defined as a datagridviewcomboboxcolumn)
    .DataSource = objDS.Tables("species")
    .DisplayMember = "species"
    .ValueMember = "name_key"
    .DataPropertyName = "name_key"
End With
strSpecies = objDS.Tables("species").Rows(0).Item(2).ToString

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I am doing the following code so that there is no blank in the first line of the combobox where the user is in edit mode. If I don't do this, there is a blank line, followed by the value previously chosen, followed by the rest of the table.

Code:

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Private Sub dgvFish_CellFormatting(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewCellFormattingEventArgs) Handles dgvFish.CellFormatting

    If e.ColumnIndex = Me.dgvFish.Columns(intSpeciesCol).Index And e.RowIndex >= 0 Then
        Dim d As DataGridViewComboBoxCell = Me.dgvFish.Rows(e.RowIndex).Cells(e.ColumnIndex)
        If e.Value = Nothing And d.Items.Count > 0 Then
            e.Value = strSpecies
        End If
    End If
End Sub

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Loading the data works fine. My problem is that if the user doesn't make any changes and hits the <UPDATE> button, when I loop thru each line of the datagridview, I can't seem to get the value (name_key) behind the cboSpecies. Here is what I am using :
Me.dgvFish.Rows(intRowIdx).Cells(3).Value to try to get the value. Any help would be greatly appreciated.

This code -- Me.dgvFish.Rows(intRowIdx).Cells(3).Value -- will try to return the value in the cell, which should be the combobox selected text that is displayed. You need to get the combobox's selected value. This isn't tested but stands to reason you should be able to get the value you are looking for similar to this:
DirectCast(Me.dgvFish.Rows(intRowIdx).Cells(3),DataGridViewComboBoxCell).SelectedValue

Unfortunately, .SelectedValue doesn't work. When I tried :

Code:

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DirectCast(Me.dgvFish.Rows(intRowIdx).Cells(3),DataGridViewComboBoxCell).SelectedValue

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I get 'SelectedValue' is not a member of 'DataGridViewComboBoxCell'.