PictureBox: StretchImage, CenterImage : PictureBox « GUI « VB.Net Tutorial

1. VB.Net Tutorial
2. GUI
3. PictureBox

Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Windows.Forms

public class ImagePictureBoxResizeMode
   public Shared Sub Main
        Application.Run(New Form1)
   End Sub
End class

Public Class Form1
    Inherits System.Windows.Forms.Form

    Public Sub New()
        MyBase.New()
        InitializeComponent()
    End Sub

    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

    Private components As System.ComponentModel.IContainer

    Friend WithEvents PictureBox1 As System.Windows.Forms.PictureBox
    Friend WithEvents OpenFileDialog1 As System.Windows.Forms.OpenFileDialog
    Friend WithEvents SaveFileDialog1 As System.Windows.Forms.SaveFileDialog
    Friend WithEvents MainMenu1 As System.Windows.Forms.MainMenu
    Friend WithEvents MenuItem1 As System.Windows.Forms.MenuItem
    Friend WithEvents MenuItem2 As System.Windows.Forms.MenuItem
    Friend WithEvents MenuItem3 As System.Windows.Forms.MenuItem
    Friend WithEvents MenuItem4 As System.Windows.Forms.MenuItem
    Friend WithEvents MenuItem5 As System.Windows.Forms.MenuItem
    Friend WithEvents MenuItem6 As System.Windows.Forms.MenuItem
    Friend WithEvents MenuItem7 As System.Windows.Forms.MenuItem
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Me.PictureBox1 = New System.Windows.Forms.PictureBox
        Me.OpenFileDialog1 = New System.Windows.Forms.OpenFileDialog
        Me.SaveFileDialog1 = New System.Windows.Forms.SaveFileDialog
        Me.MainMenu1 = New System.Windows.Forms.MainMenu
        Me.MenuItem1 = New System.Windows.Forms.MenuItem
        Me.MenuItem2 = New System.Windows.Forms.MenuItem
        Me.MenuItem5 = New System.Windows.Forms.MenuItem
        Me.MenuItem6 = New System.Windows.Forms.MenuItem
        Me.MenuItem7 = New System.Windows.Forms.MenuItem
        Me.MenuItem3 = New System.Windows.Forms.MenuItem
        Me.MenuItem4 = New System.Windows.Forms.MenuItem
        Me.SuspendLayout()
        '
        'PictureBox1
        '
        Me.PictureBox1.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D
        Me.PictureBox1.Dock = System.Windows.Forms.DockStyle.Fill
        Me.PictureBox1.Location = New System.Drawing.Point(0, 0)
        Me.PictureBox1.Name = "PictureBox1"
        Me.PictureBox1.Size = New System.Drawing.Size(292, 266)
        Me.PictureBox1.TabIndex = 0
        Me.PictureBox1.TabStop = False
        '
        'OpenFileDialog1
        '
        Me.OpenFileDialog1.Filter = "BMP(*.bmp)|*.bmp"
        '
        'SaveFileDialog1
        '
        Me.SaveFileDialog1.Filter = "BMP(*.bmp)|*.bmp"
        '
        'MainMenu1
        '
        Me.MainMenu1.MenuItems.AddRange(New System.Windows.Forms.MenuItem() {Me.MenuItem1})
        '
        'MenuItem1
        '
        Me.MenuItem1.Index = 0
        Me.MenuItem1.MenuItems.AddRange(New System.Windows.Forms.MenuItem() {Me.MenuItem2, Me.MenuItem5, Me.MenuItem6, Me.MenuItem7, Me.MenuItem3, Me.MenuItem4})
        Me.MenuItem1.Text = "File"
        '
        'MenuItem2
        '
        Me.MenuItem2.Index = 0
        Me.MenuItem2.Text = "Open"
        '
        'MenuItem5
        '
        Me.MenuItem5.Index = 1
        Me.MenuItem5.Text = "Resize"
        '
        'MenuItem6
        '
        Me.MenuItem6.Index = 2
        Me.MenuItem6.Text = "Center"
        '
        'MenuItem7
        '
        Me.MenuItem7.Index = 3
        Me.MenuItem7.Text = "Restore"
        '
        'MenuItem3
        '
        Me.MenuItem3.Index = 4
        Me.MenuItem3.Text = "Save"
        '
        'MenuItem4
        '
        Me.MenuItem4.Index = 5
        Me.MenuItem4.Text = "Exit"
        '
        'Form1
        '
        Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
        Me.ClientSize = New System.Drawing.Size(292, 266)
        Me.Controls.Add(Me.PictureBox1)
        Me.Menu = Me.MainMenu1
        Me.ResumeLayout(False)

    End Sub

    Private Sub MenuItem2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MenuItem2.Click
        Dim path As String
        Dim pic As Image
        OpenFileDialog1.ShowDialog()
        pic = New Bitmap(OpenFileDialog1.FileName)
        PictureBox1.Image = pic
    End Sub

    Private Sub MenuItem5_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MenuItem5.Click
        PictureBox1.SizeMode = PictureBoxSizeMode.StretchImage
    End Sub

    Private Sub MenuItem6_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MenuItem6.Click
        PictureBox1.SizeMode = PictureBoxSizeMode.CenterImage
    End Sub

    Private Sub MenuItem7_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MenuItem7.Click
        PictureBox1.SizeMode = PictureBoxSizeMode.Normal
    End Sub

    Private Sub MenuItem3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MenuItem3.Click
        Dim path As String
        Dim pic As Image
        pic = PictureBox1.Image
        SaveFileDialog1.ShowDialog()
        pic.Save(SaveFileDialog1.FileName)
    End Sub

    Private Sub MenuItem4_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MenuItem4.Click
        End
    End Sub
End Class

14.28.PictureBox
	14.28.1.	PictureBox: StretchImage, CenterImage
	14.28.2.	PictureBox: Save an Image
	14.28.3.	Load image to PictureBox
	14.28.4.	Using a PictureBox to display images
	14.28.5.	Draw on a PictureBox
	14.28.6.	PictureBox Mouse down event
	14.28.7.	Get Graphics from PictureBox
	14.28.8.	Draw on PictureBox border