в 16:40, 26 мая 2010

2010-05-26T16:40:30Z

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2010-05-26T12:54:40Z

1 версия

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==Get Image PropertyItems==

<source lang="vbnet">Imports System.Drawing.Imaging
Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Windows.Forms
public class MainClass
public Shared Sub Main
Dim curImage As Image = Image.FromFile("yourfile.JPG")
Dim imgProperties As PropertyItem() = curImage.PropertyItems
Console.WriteLine(imgProperties.Length.ToString())
Dim i As Integer
For i = 0 To imgProperties.Length - 1
Console.WriteLine("Id :" + imgProperties(i).Id.ToString)
Console.WriteLine("Value:" + BitConverter.ToString(imgProperties(i).Value))
Next i
End Sub
End class</source>

==Image Convert==

<source lang="vbnet">Imports System
Imports System.Drawing
Imports System.Collections
Imports System.ruponentModel
Imports System.Windows.Forms
Imports System.Data
Imports System.Drawing.Imaging

public class ImageConverter
public Shared Sub Main
Application.Run(New Form1)
End Sub
End class
Public Class Form1
Inherits System.Windows.Forms.Form
Private curImage As Image
#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 SaveFormatCombo As System.Windows.Forms.ruboBox
Friend WithEvents ConvertToBtn As System.Windows.Forms.Button
Friend WithEvents ViewImgBtn As System.Windows.Forms.Button
Friend WithEvents pictureBox1 As System.Windows.Forms.PictureBox
<System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
Me.SaveFormatCombo = New System.Windows.Forms.ruboBox
Me.ConvertToBtn = New System.Windows.Forms.Button
Me.ViewImgBtn = New System.Windows.Forms.Button
Me.pictureBox1 = New System.Windows.Forms.PictureBox
Me.SuspendLayout()
"
"SaveFormatCombo
"
Me.SaveFormatCombo.Items.AddRange(New Object() {"bmp", "jpg", "wmf", "gif", "emf"})
Me.SaveFormatCombo.Location = New System.Drawing.Point(404, 214)
Me.SaveFormatCombo.Name = "SaveFormatCombo"
Me.SaveFormatCombo.Size = New System.Drawing.Size(96, 21)
Me.SaveFormatCombo.TabIndex = 7
Me.SaveFormatCombo.Text = "bmp"
"
"ConvertToBtn
"
Me.ConvertToBtn.Location = New System.Drawing.Point(404, 182)
Me.ConvertToBtn.Name = "ConvertToBtn"
Me.ConvertToBtn.Size = New System.Drawing.Size(96, 24)
Me.ConvertToBtn.TabIndex = 6
Me.ConvertToBtn.Text = "Convert Now"
"
"ViewImgBtn
"
Me.ViewImgBtn.Location = New System.Drawing.Point(404, 38)
Me.ViewImgBtn.Name = "ViewImgBtn"
Me.ViewImgBtn.Size = New System.Drawing.Size(88, 24)
Me.ViewImgBtn.TabIndex = 5
Me.ViewImgBtn.Text = "View Image"
"
"pictureBox1
"
Me.pictureBox1.Location = New System.Drawing.Point(4, 30)
Me.pictureBox1.Name = "pictureBox1"
Me.pictureBox1.Size = New System.Drawing.Size(368, 328)
Me.pictureBox1.TabIndex = 4
Me.pictureBox1.TabStop = False
"
"Form1
"
Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
Me.ClientSize = New System.Drawing.Size(504, 389)
Me.Controls.Add(Me.SaveFormatCombo)
Me.Controls.Add(Me.ConvertToBtn)
Me.Controls.Add(Me.ViewImgBtn)
Me.Controls.Add(Me.pictureBox1)
Me.Name = "Form1"
Me.Text = "GDI+ Image Convertor"
Me.ResumeLayout(False)
End Sub
#End Region
Private Sub ViewImgBtn_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ViewImgBtn.Click
Dim openDlg As New OpenFileDialog "
openDlg.Filter = "All Image files|*.bmp;*.gif;*.jpg;*.ico;*.emf,*.wmf|Bitmap Files(*.bmp;*.gif;*.jpg;*.ico)|*.bmp;*.gif;*.jpg;*.ico|Meta Files(*.emf;*.wmf)|*.emf;*.wmf"
Dim filter As String = openDlg.Filter
openDlg.InitialDirectory = Environment.CurrentDirectory
openDlg.Title = "Open Image File"
openDlg.ShowHelp = True
If openDlg.ShowDialog() = DialogResult.OK Then
curImage = Image.FromFile(openDlg.FileName)
pictureBox1.Width = curImage.Width
pictureBox1.Height = curImage.Height
pictureBox1.Image = curImage
pictureBox1.Visible = True
End If
End Sub
Private Sub ConvertToBtn_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ConvertToBtn.Click
Dim imgStream As New System.IO.MemoryStream
Dim imgConverter As New ImageConverter
End Sub
End Class</source>

==Image Properties==

<source lang="vbnet">Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Windows.Forms
public class ImageProperty
public Shared Sub Main
Application.Run(New Form1)
End Sub
End class
public class Form1
Inherits System.Windows.Forms.Form
Protected Overrides Sub OnPaint(ByVal e As PaintEventArgs)
Dim curImage As Image = Image.FromFile("yourfile.jpg")
curImage.RotateFlip(RotateFlipType.RotateNoneFlipXY)
e.Graphics.DrawImage(curImage, New Rectangle(0, 0, 100, 100))
Console.WriteLine("Size:" + curImage.Size.ToString)
Console.WriteLine(" RawFormat:" + curImage.RawFormat.ToString)
Console.WriteLine(" Vertical Resolution:" + curImage.VerticalResolution.ToString)
Console.WriteLine(" Horizontal Resolution:" + curImage.HorizontalResolution.ToString)
Console.WriteLine(" PixelFormat:" + curImage.PixelFormat.ToString)
Console.WriteLine(" Flags:" + curImage.Flags.ToString)

End Sub
Public Sub New()

MyBase.New()
Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
Me.ClientSize = New System.Drawing.Size(292, 273)
Me.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen
End Sub
End Class</source>

==Save Image with different size==

<source lang="vbnet">Imports System.Drawing.Imaging
Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Windows.Forms
public class SaveImageWithDifferentSize
public Shared Sub Main
Application.Run(New Form1)
End Sub
End class
public class Form1
Inherits System.Windows.Forms.Form
Protected Overrides Sub OnPaint(ByVal e As PaintEventArgs)
Dim curImage As Image = Image.FromFile("yourfile.jpg")
curImage.RotateFlip(RotateFlipType.RotateNoneFlipXY)
e.Graphics.DrawImage(curImage, New Rectangle(0, 0, 100, 100))
Dim newImage As New Bitmap(curImage, New Size(100, 100))
newImage.Save("newImage.bmp", ImageFormat.Bmp)

End Sub
Public Sub New()

MyBase.New()
Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
Me.ClientSize = New System.Drawing.Size(292, 273)
Me.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen
End Sub
End Class</source>

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VB.Net Tutorial/2D Graphics/Image - История изменений

в 16:40, 26 мая 2010

Admin: 1 версия