VB.Net/2D/Image File
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
- 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
- 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
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