Private Sub DemonstratePropertyItem(ByVal e As PaintEventArgs)

    ' Create two images.
    Dim image1 As Image = Image.FromFile("c:\FakePhoto1.jpg")
    Dim image2 As Image = Image.FromFile("c:\FakePhoto2.jpg")

    ' Get a PropertyItem from image1.
    Dim propItem As PropertyItem = image1.GetPropertyItem(20624)

    ' Change the ID of the PropertyItem.
    propItem.Id = 20625

    ' Set the PropertyItem for image2.
    image2.SetPropertyItem(propItem)

    ' Draw the image.
    e.Graphics.DrawImage(image2, 20.0F, 20.0F)
End Sub

Private Sub Button2_Click(ByVal sender As System.Object, _
    ByVal e As System.EventArgs) Handles Button2.Click
    Try
        Dim image1 As Bitmap = _
            CType(Image.FromFile("C:\Documents and Settings\" _
            & "All Users\Documents\My Music\music.bmp", True), Bitmap)

        Dim texture As New TextureBrush(image1)
        texture.WrapMode = Drawing2D.WrapMode.Tile
        Dim formGraphics As Graphics = Me.CreateGraphics()
        formGraphics.FillEllipse(texture, _
            New RectangleF(90.0F, 110.0F, 100, 100))
        formGraphics.Dispose()

    Catch ex As System.IO.FileNotFoundException
        MessageBox.Show("There was an error opening the bitmap." _
            & "Please check the path.")
    End Try

End Sub

' 导入命名空间
Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Windows.Forms

public class TransparentColor
   public Shared Sub Main
        Application.Run(New Form1)
   End Sub
End class

public class Form1
  Inherits System.Windows.Forms.Form

  Protected Overrides Sub OnPaint(ByVal e As PaintEventArgs)
        Dim g As Graphics = e.Graphics
        Dim curImage As Image = Image.FromFile("yourfile.jpg")

        g.DrawImage(curImage, 0, 0, curImage.Width, curImage.Height)

        Dim opqPen As New Pen(Color.FromArgb(255, 0, 255, 0), 10)
        Dim transPen As New Pen(Color.FromArgb(128, 0, 255, 0), 10)
        Dim totTransPen As New Pen(Color.FromArgb(40, 0, 255, 0), 10)

        g.DrawLine(opqPen, 10, 10, 200, 10)
        g.DrawLine(transPen, 10, 30, 200, 30)
        g.DrawLine(totTransPen, 10, 50, 200, 50)

        Dim semiTransBrush As New SolidBrush(Color.FromArgb(60, 0, 255, 0))
        g.FillRectangle(semiTransBrush, 20, 100, 200, 100)
  End Sub

  Public Sub New()
   
    MyBase.New()
    Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
    Me.ClientSize = New System.Drawing.Size(292, 273)
    Me.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen

  End Sub

End Class