I am using a DataGridViewComboBox in a DataGridView. When a user selects a radio button, I would like to clear all the items in the DataGridViewComboBox and repopulate with new values. I do this as follows:

Code:
        Dim iIndex As Integer
        Dim dgcb As DataGridViewComboBoxCell

        For iIndex = 0 To dgvRecipe.RowCount - 1

            dgcb = dgvRecipe.Rows(iIndex).Cells("Measure")
            dgcb.Items.Clear()
            If radEnglish.Checked Then
                dgcb.Items.AddRange(New String() {"t", "T", "Cup", "Quart", "Gallon", "oz", "lbs"})
            Else
                dgcb.Items.AddRange(New String() {"mg", "g", "ml", "Litre"})
            End If
        Next iIndex
It appears to do the job, but later while the control is refreshing i get the error:

The following exception occured in the DataGridView:

System.ArguementException: DataGridViewComboBoxCell value is not valid.

To replace this default dialog please handle the DataError event.

Any ideas?