[vb.net] 데이타 그리드뷰 선택셀 조인

별거 아닌데 까먹을거 같아서 여기에 백업.

        TextBox6.Text = ""
        Dim asdf As Boolean = True
        Dim cell As DataGridViewCell
        For Each cell In DataGridView1.SelectedCells
            If Not asdf Then
                TextBox6.Text += ", "
            End If
            TextBox6.Text += cell.Value.ToString()
            asdf = False
        Next