Create Graphics from Bitmap and paint on a Picture Box

Imports System.Drawing.Drawing2D
Imports System
Imports System.Drawing.Text
Imports System.Drawing
Imports System.Windows.Forms
Imports System.Math

Public Class MainClass

   Shared Sub Main()
       Dim form1 As Form = New Form1()
       Application.Run(form1)
   End Sub 

End Class
 
Public Class Form1

    Private Sub Form1_Load(ByVal sender As Object, ByVal e As System.EventArgs) _
     Handles MyBase.Load
        DrawDiamond()
    End Sub

    Private Sub Form1_Resize(ByVal sender As Object, ByVal e As System.EventArgs) _
     Handles MyBase.Resize
        DrawDiamond()
    End Sub

    Private Sub DrawDiamond()
        Dim wid As Integer = picCanvas.ClientSize.Width
        Dim hgt As Integer = picCanvas.ClientSize.Height

        ' Do nothing if we have no size.
        ' This happens, for example, if the form is minimized.
        If wid < 1 Or hgt < 1 Then Exit Sub

        ' Make a Bitmap and Graphics to fit.
        Dim bm As New Bitmap(wid, hgt)
        Dim gr As Graphics = Graphics.FromImage(bm)

        Dim bg_brush As New HatchBrush(HatchStyle.HorizontalBrick, _
            Color.Blue, Color.Aqua)
        gr.FillRectangle(bg_brush, picCanvas.ClientRectangle)

        ' Display the result.
        picCanvas.Image = bm

        ' Free resources.
        bg_brush.Dispose()
        gr.Dispose()
    End Sub
End Class
 
 
<Global.Microsoft.VisualBasic.CompilerServices.DesignerGenerated()> _
Partial Public Class Form1
    Inherits System.Windows.Forms.Form

    'Form overrides dispose to clean up the component list.
    <System.Diagnostics.DebuggerNonUserCode()> _
    Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
        If disposing AndAlso components IsNot Nothing Then
            components.Dispose()
        End If
        MyBase.Dispose(disposing)
    End Sub

    'Required by the Windows Form Designer
    Private components As System.ComponentModel.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()
        Me.picCanvas = New System.Windows.Forms.PictureBox
        CType(Me.picCanvas, System.ComponentModel.ISupportInitialize).BeginInit()
        Me.SuspendLayout()
        '
        'picCanvas
        '
        Me.picCanvas.Dock = System.Windows.Forms.DockStyle.Fill
        Me.picCanvas.Location = New System.Drawing.Point(0, 0)
        Me.picCanvas.Name = "picCanvas"
        Me.picCanvas.Size = New System.Drawing.Size(292, 273)
        Me.picCanvas.TabIndex = 0
        Me.picCanvas.TabStop = False
        '
        'Form1
        '
        Me.AutoScaleDimensions = New System.Drawing.SizeF(6.0!, 13.0!)
        Me.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font
        Me.ClientSize = New System.Drawing.Size(292, 273)
        Me.Controls.Add(Me.picCanvas)
        Me.Name = "Form1"
        Me.Text = "AutoRedraw"
        CType(Me.picCanvas, System.ComponentModel.ISupportInitialize).EndInit()
        Me.ResumeLayout(False)

    End Sub
    Friend WithEvents picCanvas As System.Windows.Forms.PictureBox

End Class
Related examples in the same category

1.	Paint on a PictureBox
2.	Load Image into PictureBox
3.	Display BMP, Ppeg and Gif Image in PictureBox
4.	Using a PictureBox to display images
Create Graphics from Bitmap and paint on a Picture Box : PictureBox « GUI « VB.Net

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