BitmapImage as Resources : Resource « Windows Presentation Foundation « VB.Net






BitmapImage as Resources

BitmapImage as Resources
     

<Page xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    x:Class="ImageElementExample.FormatConvertedExample"
    Title="FormatConverted Example"
    Loaded="PageLoaded">
   <Page.Resources>
      <BitmapImage x:Key="masterImage" UriSource="c:\image.jpg" />
   </Page.Resources>
   <DockPanel>
      <Image Width="200" Source="{StaticResource masterImage}" />
      <Grid Name="convertedGrid" DockPanel.Dock="Top">
         <Grid.ColumnDefinitions>
            <ColumnDefinition Width="Auto" />
            <ColumnDefinition Width="Auto" />
         </Grid.ColumnDefinitions>
         <Grid.RowDefinitions>
            <RowDefinition Height="Auto" />
            <RowDefinition Height="Auto" />
            <RowDefinition Height="Auto" />
         </Grid.RowDefinitions>
         <Image Width="200" Grid.Column="0" Grid.Row="1">
            <Image.Source>
               <FormatConvertedBitmap Source="{StaticResource masterImage}"  DestinationFormat="Gray4" />
            </Image.Source>
         </Image>
      </Grid>
   </DockPanel>
</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 FormatConvertedExample
    Inherits Page
    Public Sub New()
    End Sub
    Public Sub PageLoaded(sender As Object, args As RoutedEventArgs)
      Dim grayImage As New Image()
      grayImage.Width = 200
      grayImage.Margin = New Thickness(5)

      Dim fcb As New FormatConvertedBitmap(DirectCast(Me.Resources("masterImage"), BitmapImage), PixelFormats.Gray4, Nothing, 0)
      grayImage.Source = fcb

      Grid.SetColumn(grayImage, 2)
      Grid.SetRow(grayImage, 1)
      convertedGrid.Children.Add(grayImage)
    End Sub
  End Class
End Namespace

   
    
    
    
    
  








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