2D Graphics VB.Net Tutorial

Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Windows.Forms
public class PenStyleLinearGradientBrush
   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 = Me.CreateGraphics()
        g.Clear(Me.BackColor)
        Dim img = New Bitmap("yourfile.jpg")
        Dim redBrush As New SolidBrush(Color.Red)
        Dim txtrBrush As New TextureBrush(img)
        Dim lgBrush As New LinearGradientBrush(New Rectangle(10, 10, 10, 10), Color.Red, Color.Black, 45.0F)
        Dim pn1 As New Pen(redBrush, 4)
        Dim pn2 As New Pen(txtrBrush, 20)
        Dim pn3 As New Pen(lgBrush, 20)
      
        g.DrawEllipse(pn1, 100, 100, 50, 50)
        g.DrawRectangle(pn2, 80, 80, 100, 100)
        g.DrawEllipse(pn3, 30, 30, 200, 200)
        Console.WriteLine(pn1.PenType.ToString())
        Console.WriteLine(pn2.PenType.ToString())
        Console.WriteLine(pn3.PenType.ToString())
        redBrush.Dispose()
        txtrBrush.Dispose()
        lgBrush.Dispose()
        img.Dispose()
        pn1.Dispose()
        pn2.Dispose()
        pn3.Dispose()
        g.Dispose()
  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