DataGridView 마우스 오른쪽 버튼 가능 하게

    Private Sub DataGridView1_CellMouseClick(ByVal sender As System.Object, ByVal e As System.Windows.Forms.DataGridViewCellMouseEventArgs) Handles DataGridView1.CellMouseClick
        Dim cell As DataGridViewCell
        Try
            If e.Button = Windows.Forms.MouseButtons.Right Then
                If e.ColumnIndex >= 0 And e.RowIndex >= 0 Then
                    cell = DataGridView1.Item(e.ColumnIndex, e.RowIndex)
                    DataGridView1.SelectionMode = DataGridViewSelectionMode.FullRowSelect
                    cell.Selected = True
                    ContextMenuStrip1.Show(Control.MousePosition.X, Control.MousePosition.Y)
                End If
            Else
                DataGridView1.SelectionMode = DataGridViewSelectionMode.CellSelect

            End If
        Catch ex As Exception

        End Try
    End Sub