VB 2008 การดึงรูปจาก DataGridView ทำไงครับ?แต่ปัญหาอยู่ตงที่บาง Column ผมไม่มีรูปเลย

Private Sub DataGridView1_CellClick(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewCellEventArgs) Handles DataGridView1.CellClick
        On Error GoTo duplicate  

        Dim imb() As Byte = DataGridView1.Rows.Item(e.RowIndex).Cells(3).Value
        Dim ims As New MemoryStream(imb)

        With DataGridView1

            txt1.Text = .Rows.Item(e.RowIndex).Cells(0).Value.ToString
            txt2.Text = .Rows.Item(e.RowIndex).Cells(1).Value.ToString
            txt3.Text = .Rows.Item(e.RowIndex).Cells(2).Value.ToString

            PictureBox2.Image = Image.FromStream(ims)

        End With
duplicate:
        Exit Sub
    End Sub