FormatConvertedBitmap.EndInit Yöntem
Tanım
Önemli
Bazı bilgiler ürünün ön sürümüyle ilgilidir ve sürüm öncesinde önemli değişiklikler yapılmış olabilir. Burada verilen bilgilerle ilgili olarak Microsoft açık veya zımni hiçbir garanti vermez.
Başlatmanın sona ereceğini FormatConvertedBitmap gösterir.
public:
virtual void EndInit();[System.Security.SecurityCritical]
public void EndInit ();public void EndInit ();[<System.Security.SecurityCritical>]
abstract member EndInit : unit -> unit
override this.EndInit : unit -> unitabstract member EndInit : unit -> unit
override this.EndInit : unit -> unitPublic Sub EndInit ()Uygulamalar
- Öznitelikler
Özel durumlar
Source özelliğidirnull.
-veya-
DestinationFormat özelliği dizinli bir biçim ve DestinationPalette özelliği ise şeklindedirnull.
-veya- Palet renkleri hedef biçimle eşleşmiyor.
-veya- EndInit() yöntemi çağrılmadan çağrılırBeginInit().
Örnekler
Aşağıdaki örnekte, ve EndInit yöntemlerini kullanarak BeginInit bir dizi özellik ile başlatma FormatConvertedBitmap adımları gösterilmektedir.
using System;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Media;
using System.Windows.Media.Imaging;
namespace SDKSample
{
public partial class FormatConvertedBitmapExample : Page
{
public FormatConvertedBitmapExample()
{
///// Create a BitmapImage and set it's DecodePixelWidth to 200. Use /////
///// this BitmapImage as a source for other BitmapSource objects. /////
BitmapImage myBitmapImage = new BitmapImage();
// BitmapSource objects like BitmapImage can only have their properties
// changed within a BeginInit/EndInit block.
myBitmapImage.BeginInit();
myBitmapImage.UriSource = new Uri(@"sampleImages/WaterLilies.jpg",UriKind.Relative);
// To save significant application memory, set the DecodePixelWidth or
// DecodePixelHeight of the BitmapImage value of the image source to the desired
// height or width of the rendered image. If you don't do this, the application will
// cache the image as though it were rendered as its normal size rather then just
// the size that is displayed.
// Note: In order to preserve aspect ratio, set DecodePixelWidth
// or DecodePixelHeight but not both.
myBitmapImage.DecodePixelWidth = 200;
myBitmapImage.EndInit();
////////// Convert the BitmapSource to a new format ////////////
// Use the BitmapImage created above as the source for a new BitmapSource object
// which is set to a gray scale format using the FormatConvertedBitmap BitmapSource.
// Note: New BitmapSource does not cache. It is always pulled when required.
FormatConvertedBitmap newFormatedBitmapSource = new FormatConvertedBitmap();
// BitmapSource objects like FormatConvertedBitmap can only have their properties
// changed within a BeginInit/EndInit block.
newFormatedBitmapSource.BeginInit();
// Use the BitmapSource object defined above as the source for this new
// BitmapSource (chain the BitmapSource objects together).
newFormatedBitmapSource.Source = myBitmapImage;
// Set the new format to Gray32Float (grayscale).
newFormatedBitmapSource.DestinationFormat = PixelFormats.Gray32Float;
newFormatedBitmapSource.EndInit();
// Create Image Element
Image myImage = new Image();
myImage.Width = 200;
//set image source
myImage.Source = newFormatedBitmapSource;
// Add Image to the UI
StackPanel myStackPanel = new StackPanel();
myStackPanel.Children.Add(myImage);
this.Content = myStackPanel;
}
}
}
Imports System.Windows
Imports System.Windows.Controls
Imports System.Windows.Media
Imports System.Windows.Media.Imaging
Namespace SDKSample
Class FormatConvertedBitmapExample
Inherits Page
Public Sub New()
'/// Create a BitmapImage and set it's DecodePixelWidth to 200. Use /////
'/// this BitmapImage as a source for other BitmapSource objects. /////
Dim myBitmapImage As New BitmapImage()
' BitmapSource objects like BitmapImage can only have their properties
' changed within a BeginInit/EndInit block.
myBitmapImage.BeginInit()
myBitmapImage.UriSource = New Uri("sampleImages/WaterLilies.jpg", UriKind.Relative)
' To save significant application memory, set the DecodePixelWidth or
' DecodePixelHeight of the BitmapImage value of the image source to the desired
' height or width of the rendered image. If you don't do this, the application will
' cache the image as though it were rendered as its normal size rather then just
' the size that is displayed.
' Note: In order to preserve aspect ratio, set DecodePixelWidth
' or DecodePixelHeight but not both.
myBitmapImage.DecodePixelWidth = 200
myBitmapImage.EndInit()
'//////// Convert the BitmapSource to a new format ////////////
' Use the BitmapImage created above as the source for a new BitmapSource object
' which is set to a gray scale format using the FormatConvertedBitmap BitmapSource.
' Note: New BitmapSource does not cache. It is always pulled when required.
Dim newFormatedBitmapSource As New FormatConvertedBitmap()
' BitmapSource objects like FormatConvertedBitmap can only have their properties
' changed within a BeginInit/EndInit block.
newFormatedBitmapSource.BeginInit()
' Use the BitmapSource object defined above as the source for this new
' BitmapSource (chain the BitmapSource objects together).
newFormatedBitmapSource.Source = myBitmapImage
' Set the new format to Gray32Float (grayscale).
newFormatedBitmapSource.DestinationFormat = PixelFormats.Gray32Float
newFormatedBitmapSource.EndInit()
' Create Image Element
Dim myImage As New Image()
myImage.Width = 200
'set image source
myImage.Source = newFormatedBitmapSource
' Add Image to the UI
Dim myStackPanel As New StackPanel()
myStackPanel.Children.Add(myImage)
Me.Content = myStackPanel
End Sub
End Class
End Namespace 'ImagingSnippetGallery
Açıklamalar
Özellik başlatma, aşağıdaki örnekte gösterildiği gibi ve EndInit çağrıları arasında BeginInit yapılmalıdır. FormatConvertedBitmap başlatıldıktan sonra özellik değişiklikleri yoksayılır.