Use CroppedBitmap in code : Image « Windows Presentation Foundation « VB.Net

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VB.Net » Windows Presentation Foundation » ImageScreenshots 
Use CroppedBitmap in code
      

<Page xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
  xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    x:Class="ImageElementExample.CroppedImageExample"
    Title="CroppedImage Example"
    Loaded="PageLoaded">
    <Page.Resources>
       <BitmapImage x:Key="masterImage" UriSource="c:\image.jpg" />
       <CroppedBitmap x:Key="croppedImage" Source="{StaticResource masterImage}" SourceRect="30 20 105 50"/>
    </Page.Resources>
    <StackPanel>
         <Image Width="200" Source="{StaticResource masterImage}"/>
         <Image Width="200" Source="{StaticResource croppedImage}"/>
         <Image Width="200">
            <Image.Source>
               <CroppedBitmap Source="{StaticResource croppedImage}" SourceRect="30 0 75 50"/>
            </Image.Source>
         </Image>
   </StackPanel>
</Page>

//File:Window.xaml.vb
Imports System
Imports System.Windows
Imports System.Windows.Documents
Imports System.Windows.Controls
Imports System.Windows.Navigation
Imports System.Windows.Input
Imports System.Windows.Media
Imports System.Windows.Media.Imaging


Namespace ImageElementExample
  Public Partial Class CroppedImageExample
    Inherits Page
    Public Sub New()
    End Sub

    Public Sub PageLoaded(sender As Object, args As RoutedEventArgs)
      Dim croppedImage As New Image()
      croppedImage.Width = 200
      croppedImage.Margin = New Thickness(5)

      Dim cb As New CroppedBitmap(DirectCast(Me.Resources("masterImage"), BitmapSource), New Int32Rect(302010550))
      croppedImage.Source = cb

      Dim chainImage As New Image()
      chainImage.Width = 200

      Dim chained As New CroppedBitmap(cb, New Int32Rect(300, CInt(Math.Truncate(cb.Width)) 30, CInt(Math.Truncate(cb.Height))))
      chainImage.Source = chained
    End Sub
  End Class
End Namespace

   
    
    
    
    
    
  
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