How to rotate image as mirror effect

Rotate given image and create effect of mirror and display in picturebox

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        Try
            Dim img1 As Image
            img1 = Image.FromFile("C:\1.gif")
            img1.RotateFlip(RotateFlipType.RotateNoneFlipX)
            PictureBox1.Image = img1
        Catch ex As Exception
             MessageBox.Show(ex.ToString())
        End Try
End Sub