VB.Net Tutorial/GUI/PictureBox — различия между версиями

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Текущая версия на 12:56, 26 мая 2010

Draw on a PictureBox

Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Windows.Forms
public class DrawOnaPictureBox
   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.ruponentModel.IContainer
    Friend WithEvents PictureBox1 As System.Windows.Forms.PictureBox
    Friend WithEvents Button1 As System.Windows.Forms.Button
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Me.PictureBox1 = New System.Windows.Forms.PictureBox
        Me.Button1 = New System.Windows.Forms.Button
        Me.SuspendLayout()
        "
        "PictureBox1
        "
        Me.PictureBox1.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D
        Me.PictureBox1.Dock = System.Windows.Forms.DockStyle.Top
        Me.PictureBox1.Location = New System.Drawing.Point(0, 0)
        Me.PictureBox1.Name = "PictureBox1"
        Me.PictureBox1.Size = New System.Drawing.Size(292, 168)
        Me.PictureBox1.TabIndex = 0
        Me.PictureBox1.TabStop = False
        "
        "Button1
        "
        Me.Button1.Location = New System.Drawing.Point(104, 184)
        Me.Button1.Name = "Button1"
        Me.Button1.Size = New System.Drawing.Size(80, 32)
        Me.Button1.TabIndex = 1
        Me.Button1.Text = "Draw"
        "
        "Form1
        "
        Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
        Me.ClientSize = New System.Drawing.Size(292, 238)
        Me.Controls.Add(Me.Button1)
        Me.Controls.Add(Me.PictureBox1)
        Me.ResumeLayout(False)
    End Sub
    Dim pen1 As New System.Drawing.Pen(Color.Green, 4)
    Dim g As System.Drawing.Graphics
    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        PictureBox1.Refresh()
        g = PictureBox1.CreateGraphics
        g.DrawEllipse(pen1, 70, 10, 100, 150)
    End Sub
End Class

Draw on PictureBox border

Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Windows.Forms
public class DrawOnPictureBorder
   public Shared Sub Main
        Application.Run(New frmViewer)
   End Sub
End Class
Public Class frmViewer
    Private Sub btnSelectPicture_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnSelectPicture.Click
        picShowPicture.Image = Image.FromFile("yourfile.jpg")
    End Sub
    Private Sub btnQuit_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnQuit.Click
        Me.Close()
    End Sub
    Private Sub btnDrawBorder_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnDrawBorder.Click
        Dim objGraphics As Graphics
        objGraphics = Me.CreateGraphics
        objGraphics.Clear(SystemColors.Control)
        objGraphics.DrawRectangle(Pens.Red, _
                picShowPicture.Left - 1, picShowPicture.Top - 1, _
                picShowPicture.Width + 1, picShowPicture.Height + 1)
        objGraphics.Dispose()
    End Sub
End Class
<Global.Microsoft.VisualBasic.rupilerServices.DesignerGenerated()> _
Partial Class frmViewer
    Inherits System.Windows.Forms.Form
    "Form overrides dispose to clean up the component list.
    <System.Diagnostics.DebuggerNonUserCode()> _
    Protected 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.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()
        Me.btnSelectPicture = New System.Windows.Forms.Button
        Me.btnQuit = New System.Windows.Forms.Button
        Me.picShowPicture = New System.Windows.Forms.PictureBox
        Me.ofdSelectPicture = New System.Windows.Forms.OpenFileDialog
        Me.btnDrawBorder = New System.Windows.Forms.Button
        CType(Me.picShowPicture, System.ruponentModel.ISupportInitialize).BeginInit()
        Me.SuspendLayout()
        "
        "btnSelectPicture
        "
        Me.btnSelectPicture.Location = New System.Drawing.Point(301, 10)
        Me.btnSelectPicture.Name = "btnSelectPicture"
        Me.btnSelectPicture.Size = New System.Drawing.Size(85, 23)
        Me.btnSelectPicture.TabIndex = 0
        Me.btnSelectPicture.Text = "Select Picture"
        Me.btnSelectPicture.UseVisualStyleBackColor = True
        "
        "btnQuit
        "
        Me.btnQuit.Location = New System.Drawing.Point(301, 40)
        Me.btnQuit.Name = "btnQuit"
        Me.btnQuit.Size = New System.Drawing.Size(85, 23)
        Me.btnQuit.TabIndex = 1
        Me.btnQuit.Text = "Quit"
        Me.btnQuit.UseVisualStyleBackColor = True
        "
        "picShowPicture
        "
        Me.picShowPicture.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle
        Me.picShowPicture.Location = New System.Drawing.Point(8, 8)
        Me.picShowPicture.Name = "picShowPicture"
        Me.picShowPicture.Size = New System.Drawing.Size(282, 275)
        Me.picShowPicture.TabIndex = 2
        Me.picShowPicture.TabStop = False
        "
        "ofdSelectPicture
        "
        Me.ofdSelectPicture.Filter = "Windows Bitmaps|*.BMP|JPEG Files|*.JPG"
        Me.ofdSelectPicture.Title = "Select Picture"
        "
        "btnDrawBorder
        "
        Me.btnDrawBorder.Location = New System.Drawing.Point(301, 69)
        Me.btnDrawBorder.Name = "btnDrawBorder"
        Me.btnDrawBorder.Size = New System.Drawing.Size(85, 23)
        Me.btnDrawBorder.TabIndex = 5
        Me.btnDrawBorder.Text = "Draw Border"
        Me.btnDrawBorder.UseVisualStyleBackColor = True
        "
        "frmViewer
        "
        Me.AutoScaleDimensions = New System.Drawing.SizeF(6.0!, 13.0!)
        Me.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font
        Me.ClientSize = New System.Drawing.Size(392, 291)
        Me.Controls.Add(Me.btnDrawBorder)
        Me.Controls.Add(Me.picShowPicture)
        Me.Controls.Add(Me.btnQuit)
        Me.Controls.Add(Me.btnSelectPicture)
        Me.Name = "frmViewer"
        Me.Text = "Picture Viewer"
        CType(Me.picShowPicture, System.ruponentModel.ISupportInitialize).EndInit()
        Me.ResumeLayout(False)
    End Sub
    Friend WithEvents btnSelectPicture As System.Windows.Forms.Button
    Friend WithEvents btnQuit As System.Windows.Forms.Button
    Friend WithEvents picShowPicture As System.Windows.Forms.PictureBox
    Friend WithEvents ofdSelectPicture As System.Windows.Forms.OpenFileDialog
    Friend WithEvents btnEnlarge As System.Windows.Forms.Button
    Friend WithEvents btnShrink As System.Windows.Forms.Button
    Friend WithEvents btnDrawBorder As System.Windows.Forms.Button
End Class

Get Graphics from PictureBox

Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Windows.Forms
public class DrawFilledShape
   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.ruponentModel.IContainer
    Friend WithEvents PictureBox1 As System.Windows.Forms.PictureBox
    Friend WithEvents Button1 As System.Windows.Forms.Button
    Friend WithEvents Button2 As System.Windows.Forms.Button
    Friend WithEvents Button3 As System.Windows.Forms.Button
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Me.PictureBox1 = New System.Windows.Forms.PictureBox
        Me.Button1 = New System.Windows.Forms.Button
        Me.Button2 = New System.Windows.Forms.Button
        Me.Button3 = New System.Windows.Forms.Button
        Me.SuspendLayout()
        "
        "PictureBox1
        "
        Me.PictureBox1.BackColor = System.Drawing.SystemColors.Window
        Me.PictureBox1.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D
        Me.PictureBox1.Dock = System.Windows.Forms.DockStyle.Top
        Me.PictureBox1.Location = New System.Drawing.Point(0, 0)
        Me.PictureBox1.Name = "PictureBox1"
        Me.PictureBox1.Size = New System.Drawing.Size(292, 168)
        Me.PictureBox1.TabIndex = 0
        Me.PictureBox1.TabStop = False
        "
        "Button1
        "
        Me.Button1.Location = New System.Drawing.Point(16, 184)
        Me.Button1.Name = "Button1"
        Me.Button1.Size = New System.Drawing.Size(72, 32)
        Me.Button1.TabIndex = 1
        Me.Button1.Text = "Ellipse"
        "
        "Button2
        "
        Me.Button2.Location = New System.Drawing.Point(112, 184)
        Me.Button2.Name = "Button2"
        Me.Button2.Size = New System.Drawing.Size(72, 32)
        Me.Button2.TabIndex = 2
        Me.Button2.Text = "Rectangle"
        "
        "Button3
        "
        Me.Button3.Location = New System.Drawing.Point(208, 184)
        Me.Button3.Name = "Button3"
        Me.Button3.Size = New System.Drawing.Size(72, 32)
        Me.Button3.TabIndex = 3
        Me.Button3.Text = "Pie"
        "
        "Form1
        "
        Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
        Me.ClientSize = New System.Drawing.Size(292, 238)
        Me.Controls.Add(Me.Button3)
        Me.Controls.Add(Me.Button2)
        Me.Controls.Add(Me.Button1)
        Me.Controls.Add(Me.PictureBox1)
        Me.ResumeLayout(False)
    End Sub
    Dim brush1 As System.Drawing.Brush
    Dim g As System.Drawing.Graphics
    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        brush1 = New SolidBrush(Color.Green)
        g = PictureBox1.CreateGraphics
        g.FillEllipse(brush1, 30, 30, 100, 150)
    End Sub
    Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
        brush1 = New SolidBrush(Color.Green)
        g = PictureBox1.CreateGraphics
        g.FillRectangle(brush1, 30, 30, 100, 100)
    End Sub
    Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click
        brush1 = New SolidBrush(Color.Green)
        g = PictureBox1.CreateGraphics
        g.FillPie(brush1, 30, 30, 120, 120, 170, 200)
    End Sub
End Class

Load image to PictureBox

Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Windows.Forms
public class PictureBoxImageFromOpenFileDialog
   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.ruponentModel.IContainer
    Friend WithEvents PictureBox1 As System.Windows.Forms.PictureBox
    Friend WithEvents Button1 As System.Windows.Forms.Button
    Friend WithEvents OpenFileDialog1 As System.Windows.Forms.OpenFileDialog
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Me.PictureBox1 = New System.Windows.Forms.PictureBox
        Me.Button1 = New System.Windows.Forms.Button
        Me.OpenFileDialog1 = New System.Windows.Forms.OpenFileDialog
        Me.SuspendLayout()
        "
        "PictureBox1
        "
        Me.PictureBox1.Location = New System.Drawing.Point(16, 16)
        Me.PictureBox1.Name = "PictureBox1"
        Me.PictureBox1.Size = New System.Drawing.Size(248, 176)
        Me.PictureBox1.SizeMode = System.Windows.Forms.PictureBoxSizeMode.AutoSize
        Me.PictureBox1.TabIndex = 0
        Me.PictureBox1.TabStop = False
        "
        "Button1
        "
        Me.Button1.Location = New System.Drawing.Point(96, 208)
        Me.Button1.Name = "Button1"
        Me.Button1.Size = New System.Drawing.Size(88, 24)
        Me.Button1.TabIndex = 1
        Me.Button1.Text = "Open"
        "
        "OpenFileDialog1
        "
        Me.OpenFileDialog1.Filter = "bmp(*.bmp)|*.bmp"
        "
        "Form1
        "
        Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
        Me.ClientSize = New System.Drawing.Size(292, 266)
        Me.Controls.Add(Me.Button1)
        Me.Controls.Add(Me.PictureBox1)
        Me.ResumeLayout(False)
    End Sub
    
    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        Dim pic As Image
        OpenFileDialog1.ShowDialog()
        pic = New Bitmap(OpenFileDialog1.FileName)
        PictureBox1.Image = pic
    End Sub
End Class

PictureBox Mouse down event

Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Windows.Forms
public class ColorPicker
   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.ruponentModel.IContainer
    Friend WithEvents PictureBox1 As System.Windows.Forms.PictureBox
    Friend WithEvents Label1 As System.Windows.Forms.Label
    Friend WithEvents Label2 As System.Windows.Forms.Label
    Friend WithEvents Label3 As System.Windows.Forms.Label
    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 OpenFileDialog1 As System.Windows.Forms.OpenFileDialog
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Me.PictureBox1 = New System.Windows.Forms.PictureBox
        Me.Label1 = New System.Windows.Forms.Label
        Me.Label2 = New System.Windows.Forms.Label
        Me.Label3 = New System.Windows.Forms.Label
        Me.MainMenu1 = New System.Windows.Forms.MainMenu
        Me.MenuItem1 = New System.Windows.Forms.MenuItem
        Me.MenuItem2 = New System.Windows.Forms.MenuItem
        Me.MenuItem3 = New System.Windows.Forms.MenuItem
        Me.OpenFileDialog1 = New System.Windows.Forms.OpenFileDialog
        Me.SuspendLayout()
        "
        "PictureBox1
        "
        Me.PictureBox1.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D
        Me.PictureBox1.Dock = System.Windows.Forms.DockStyle.Top
        Me.PictureBox1.Image = Image.FromFile("YourFile.bmp")
        Me.PictureBox1.Location = New System.Drawing.Point(0, 0)
        Me.PictureBox1.Name = "PictureBox1"
        Me.PictureBox1.Size = New System.Drawing.Size(292, 216)
        Me.PictureBox1.TabIndex = 0
        Me.PictureBox1.TabStop = False
        "
        "Label1
        "
        Me.Label1.Location = New System.Drawing.Point(24, 232)
        Me.Label1.Name = "Label1"
        Me.Label1.Size = New System.Drawing.Size(56, 24)
        Me.Label1.TabIndex = 1
        Me.Label1.Text = "R:"
        "
        "Label2
        "
        Me.Label2.Location = New System.Drawing.Point(112, 232)
        Me.Label2.Name = "Label2"
        Me.Label2.Size = New System.Drawing.Size(64, 24)
        Me.Label2.TabIndex = 2
        Me.Label2.Text = "G:"
        "
        "Label3
        "
        Me.Label3.Location = New System.Drawing.Point(208, 232)
        Me.Label3.Name = "Label3"
        Me.Label3.Size = New System.Drawing.Size(64, 24)
        Me.Label3.TabIndex = 3
        Me.Label3.Text = "B:"
        "
        "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.MenuItem3})
        Me.MenuItem1.Text = "File"
        "
        "MenuItem2
        "
        Me.MenuItem2.Index = 0
        Me.MenuItem2.Text = "Open"
        "
        "MenuItem3
        "
        Me.MenuItem3.Index = 1
        Me.MenuItem3.Text = "Exit"
        "
        "Form1
        "
        Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
        Me.ClientSize = New System.Drawing.Size(292, 270)
        Me.Controls.Add(Me.Label3)
        Me.Controls.Add(Me.Label2)
        Me.Controls.Add(Me.Label1)
        Me.Controls.Add(Me.PictureBox1)
        Me.Menu = Me.MainMenu1
        Me.ResumeLayout(False)
    End Sub
    Dim pic As Bitmap
    Dim c As System.Drawing.Color
    Dim xwidth, yheight As Integer
    Private Sub PictureBox1_MouseDown(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles PictureBox1.MouseDown
        pic = PictureBox1.Image
        xwidth = pic.Width
        yheight = pic.Height
        If e.X < xwidth And e.Y < yheight Then
            c = pic.GetPixel(e.X, e.Y)
            Label1.Text = "R:" + c.R.ToString
            Label2.Text = "G:" + c.G.ToString
            Label3.Text = "B:" + c.B.ToString
        End If
    End Sub
    Private Sub MenuItem2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MenuItem2.Click
        OpenFileDialog1.ShowDialog()
        PictureBox1.Image = New Bitmap(OpenFileDialog1.FileName)
    End Sub
    Private Sub MenuItem3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MenuItem3.Click
        End
    End Sub
End Class

PictureBox: Save an Image

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.ruponentModel.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

PictureBox: StretchImage, CenterImage

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.ruponentModel.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

Using a PictureBox to display images

Imports System.IO
Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Windows.Forms
public class DisplayImageInPictureBox
   public Shared Sub Main
        Application.Run(New FrmPictureBox)
   End Sub
End class
Public Class FrmPictureBox
   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
   Friend WithEvents picImage As System.Windows.Forms.Label
   Friend WithEvents lblPrompt As System.Windows.Forms.Label
   "Required by the Windows Form Designer
   Private components As System.ruponentModel.Container
   "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.picImage = New System.Windows.Forms.Label()
      Me.lblPrompt = New System.Windows.Forms.Label()
      Me.SuspendLayout()
      "
      "picImage
      "
      Me.picImage.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D
      Me.picImage.Location = New System.Drawing.Point(16, 48)
      Me.picImage.Name = "picImage"
      Me.picImage.Size = New System.Drawing.Size(264, 208)
      Me.picImage.TabIndex = 1
      "
      "lblPrompt
      "
      Me.lblPrompt.Location = New System.Drawing.Point(16, 16)
      Me.lblPrompt.Name = "lblPrompt"
      Me.lblPrompt.Size = New System.Drawing.Size(264, 23)
      Me.lblPrompt.TabIndex = 0
      Me.lblPrompt.Text = "Click On PictureBox to View Images"
      "
      "FrmPictureBox
      "
      Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
      Me.ClientSize = New System.Drawing.Size(292, 273)
      Me.Controls.AddRange(New System.Windows.Forms.Control() {Me.picImage, Me.lblPrompt})
      Me.Name = "FrmPictureBox"
      Me.Text = "PictureBoxTest"
      Me.ResumeLayout(False)
   End Sub
#End Region
   " replace image in picImage
   Private Sub picImage_Click(ByVal sender As System.Object, _
      ByVal e As System.EventArgs) Handles picImage.Click
      picImage.Image = Image.FromFile("YourFile.bmp")
   End Sub
End Class