VB.Net/2D/Image File

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Save to an Image File

<source lang="vbnet"> Imports System Imports System.Collections Imports System.ruponentModel Imports System.Windows.Forms Imports System.Data Imports System.Configuration Imports System.Resources Imports System.Drawing Imports System.Drawing.Drawing2D Imports System.Drawing.Imaging Public Class MainClass

   Shared Sub Main()
       Dim myform As Form = New DrawingToImagesForm()
       Application.Run(myform)
   End Sub

End Class Public Class DrawingToImagesForm

   Inherits System.Windows.Forms.Form
  1. 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.
   Friend WithEvents saveButton As System.Windows.Forms.Button
   Friend WithEvents panel1 As System.Windows.Forms.Panel
   <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
       Me.saveButton = New System.Windows.Forms.Button()
       Me.panel1 = New System.Windows.Forms.Panel()
       Me.SuspendLayout()
       "
       "saveButton
       "
       Me.saveButton.Anchor = System.Windows.Forms.AnchorStyles.Bottom
       Me.saveButton.Location = New System.Drawing.Point(104, 238)
       Me.saveButton.Name = "saveButton"
       Me.saveButton.TabIndex = 3
       Me.saveButton.Text = "Save"
       "
       "panel1
       "
       Me.panel1.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D
       Me.panel1.Dock = System.Windows.Forms.DockStyle.Top
       Me.panel1.Name = "panel1"
       Me.panel1.Size = New System.Drawing.Size(292, 224)
       Me.panel1.TabIndex = 2
       "
       "DrawingToImagesForm
       "
       Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
       Me.ClientSize = New System.Drawing.Size(292, 266)
       Me.Controls.AddRange(New System.Windows.Forms.Control() {Me.saveButton, Me.panel1})
       Me.Name = "DrawingToImagesForm"
       Me.Text = "DrawingToImagesForm"
       Me.ResumeLayout(False)
   End Sub
  1. End Region
   Dim offset As Integer
   Private Sub saveButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles saveButton.Click
       Dim rect As Rectangle = New Rectangle(0, 0, 100, 100)
       Dim displayGraphics As Graphics = Me.CreateGraphics()
       Dim img As Image = New Bitmap(rect.Width, rect.Height, displayGraphics)
       Dim imageGraphics As Graphics = Graphics.FromImage(img)
       imageGraphics.FillRectangle(Brushes.Black, rect)
       Dim format As StringFormat = New StringFormat()
       format.Alignment = StringAlignment.Center
       format.LineAlignment = StringAlignment.Center
       imageGraphics.DrawString("Drawing to an image", panel1.Font, Brushes.White, RectangleF.op_Implicit(rect), format)
       Dim file As String = "image.png"
       img.Save(file)
       MessageBox.Show("Saved to file: " & file)
   End Sub
   Private Sub panel1_Paint(ByVal sender As System.Object, ByVal e As System.Windows.Forms.PaintEventArgs) Handles panel1.Paint
       Dim g As Graphics = e.Graphics
       Dim rect As Rectangle = Me.panel1.ClientRectangle
       Dim img As Image = New Bitmap(rect.Width, rect.Height, g)
       Dim imageGraphics As Graphics = Graphics.FromImage(img)
       imageGraphics.FillRectangle(Brushes.White, rect)
       Dim format As StringFormat = New StringFormat()
       format.Alignment = StringAlignment.Center
       format.LineAlignment = StringAlignment.Center
       imageGraphics.DrawString("Drawing to an image", panel1.Font, Brushes.Black, RectangleF.op_Implicit(rect), format)
       g.DrawImage(img, rect)
   End Sub
   Private Sub DrawingToImagesForm_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
       offset = Me.ClientRectangle.Height - Me.panel1.Height
   End Sub
   Private Sub DrawingToImagesForm_Layout(ByVal sender As Object, ByVal e As LayoutEventArgs) Handles MyBase.Layout
       Me.panel1.Height = Me.ClientRectangle.Height - offset
   End Sub

End Class

      </source>