VB.Net/GUI/Paint Mode

Invalidate only the area where the image will be drawn

Imports System
Imports System.Windows.Forms
Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Drawing.Text
Imports System.Drawing.Imaging
Public Class MainClass
  Shared Sub Main()
     Dim form1 As Form1 = new Form1
     Application.Run(form1)
  End Sub
  
End Class

Public Class Form1
  Inherits System.Windows.Forms.Form
#Region " Windows Form Designer generated code "
  Public Sub New()
    MyBase.New()
    "This call is required by the Windows Form Designer.
    InitializeComponent()
    "Add any initialization after the InitializeComponent() call
  End Sub
  "Form overrides dispose to clean up the component list.
  Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
    If disposing Then
      If Not (components Is Nothing) Then
        components.Dispose()
      End If
    End If
    MyBase.Dispose(disposing)
  End Sub
  "Required by the Windows Form Designer
  Private components As System.ruponentModel.IContainer
  "NOTE: The following procedure is required by the Windows Form Designer
  "It can be modified using the Windows Form Designer.  
  "Do not modify it using the code editor.
  <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
    "
    "Form1
    "
    Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
    Me.ClientSize = New System.Drawing.Size(292, 273)
    Me.Name = "Form1"
    Me.Text = "Form1"
  End Sub
#End Region
  Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
  End Sub
  Protected Overrides Sub OnPaint(ByVal e As PaintEventArgs)
     Dim Bmp As Bitmap = New Bitmap("figure2.bmp")
     Dim BMPContainer As RectangleF
 
     Dim G As Graphics = Me.CreateGraphics()
     Dim GU As GraphicsUnit = G.PageUnit
     BMPContainer = Bmp.GetBounds(GU) "x,y=0
     Me.Invalidate(Rectangle.Round(BMPContainer))  
     e.Graphics.DrawImage(Bmp, 150, 30)
  End Sub
End Class

Set Form Style: ResizeRedraw, DoubleBuffer, AllPaintingInWmPaint

Imports System
Imports System.Windows.Forms
Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Drawing.Text
Imports System.Drawing.Imaging
Public Class MainClass
  Shared Sub Main()
     Dim form1 As Form1 = new Form1
     Application.Run(form1)
  End Sub
  
End Class

Public Class Form1
  Inherits System.Windows.Forms.Form
#Region " Windows Form Designer generated code "
  Public Sub New()
    MyBase.New()
    "This call is required by the Windows Form Designer.
    InitializeComponent()
    "Add any initialization after the InitializeComponent() call
  End Sub
  "Form overrides dispose to clean up the component list.
  Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
    If disposing Then
      If Not (components Is Nothing) Then
        components.Dispose()
      End If
    End If
    MyBase.Dispose(disposing)
  End Sub
  "Required by the Windows Form Designer
  Private components As System.ruponentModel.IContainer
  "NOTE: The following procedure is required by the Windows Form Designer
  "It can be modified using the Windows Form Designer.  
  "Do not modify it using the code editor.
  <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
    "
    "Form1
    "
    Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
    Me.ClientSize = New System.Drawing.Size(292, 273)
    Me.Name = "Form1"
    Me.Text = "Form1"
  End Sub
#End Region
  Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        Me.SetStyle(ControlStyles.ResizeRedraw, True)
        Me.SetStyle(ControlStyles.DoubleBuffer, True)
        Me.SetStyle(ControlStyles.AllPaintingInWmPaint, True)
  End Sub
  Protected Overrides Sub OnPaint(ByVal e As PaintEventArgs)
     Dim Bmp As Bitmap = New Bitmap("figure2.bmp")
     Dim BMPContainer As RectangleF
 
     Dim G As Graphics = Me.CreateGraphics()
     Dim GU As GraphicsUnit = G.PageUnit
     BMPContainer = Bmp.GetBounds(GU) "x,y=0
     Me.Invalidate(Rectangle.Round(BMPContainer))  
     e.Graphics.DrawImage(Bmp, 150, 30)
  End Sub
End Class

Set Paint to be Double Buffered

Imports System
Imports System.Windows.Forms
Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Drawing.Text
Imports System.Drawing.Imaging
Public Class MainClass
  Shared Sub Main()
     Dim form1 As Form1 = new Form1
     Application.Run(form1)
  End Sub
  
End Class

Public Class Form1
  Inherits System.Windows.Forms.Form
#Region " Windows Form Designer generated code "
  Public Sub New()
    MyBase.New()
    "This call is required by the Windows Form Designer.
    InitializeComponent()
    "Add any initialization after the InitializeComponent() call
  End Sub
  "Form overrides dispose to clean up the component list.
  Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
    If disposing Then
      If Not (components Is Nothing) Then
        components.Dispose()
      End If
    End If
    MyBase.Dispose(disposing)
  End Sub
  "Required by the Windows Form Designer
  Private components As System.ruponentModel.IContainer
  "NOTE: The following procedure is required by the Windows Form Designer
  "It can be modified using the Windows Form Designer.  
  "Do not modify it using the code editor.
  <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
    "
    "Form1
    "
    Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
    Me.ClientSize = New System.Drawing.Size(292, 273)
    Me.Name = "Form1"
    Me.Text = "Form1"
  End Sub
#End Region
  Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        Me.SetStyle(ControlStyles.ResizeRedraw, True)
        Me.SetStyle(ControlStyles.DoubleBuffer, True)
        Me.SetStyle(ControlStyles.AllPaintingInWmPaint, True)
  End Sub
  Protected Overrides Sub OnPaint(ByVal e As PaintEventArgs)
     Dim Bmp As Bitmap = New Bitmap("figure2.bmp")
     Dim BMPContainer As RectangleF
 
     Dim G As Graphics = Me.CreateGraphics()
     Dim GU As GraphicsUnit = G.PageUnit
     BMPContainer = Bmp.GetBounds(GU) "x,y=0
     Me.Invalidate(Rectangle.Round(BMPContainer))  
     e.Graphics.DrawImage(Bmp, 150, 30)
  End Sub
End Class