我怎么能转换为WriteableBitmap的BitmapImage的？ [英] How can I convert WriteableBitmap to BitmapImage?

问题描述

 的BitmapImage BitmapImage的=新的BitmapImage（新的URI（arka_projects_as_logo.png，UriKind.Relative））; 
图像的UIElement =新的图像（）{源=的BitmapImage}; 
 ScaleTransform T =新ScaleTransform（）{的ScaleX = 0.2，的scaleY = 0.2}; 
 WriteableBitmap的WriteableBitmap的=新WriteableBitmap的（的UIElement，T）; 
  

我要插入此转换（WriteableBitmap的）的结果为System.Windows.Controls.Image。当我这样做：

 图像arkaImage =新的图像（）{源= WriteableBitmap的}; 
  

arkaImage 没有显示在所有。有什么可以做，使工作？

解决方案

  WriteableBitmap的WB = .. 
使用（MemoryStream的毫秒=新的MemoryStream（））
 {
 wb.SaveJpeg（毫秒，（INT）image1.Width，（INT）image1.Height，0，100）; 
的BitmapImage BMP =新的BitmapImage（）; 
 bmp.SetSource（毫秒）; 
} 
  

BitmapImage bitmapImage = new BitmapImage(new Uri("arka_projects_as_logo.png", UriKind.Relative));
Image uiElement = new Image() { Source = bitmapImage };
ScaleTransform t = new ScaleTransform() { ScaleX = 0.2, ScaleY = 0.2 };
WriteableBitmap writeableBitmap = new WriteableBitmap(uiElement,t);

I want to insert the result of this conversions (writeableBitmap) into System.Windows.Controls.Image. When I do this:

Image arkaImage = new Image() { Source = writeableBitmap };

arkaImage isn't shown at all. What can be done to make it work?

解决方案

WriteableBitmap wb = ..
using (MemoryStream ms = new MemoryStream())
{
    wb.SaveJpeg(ms, (int)image1.Width, (int)image1.Height, 0, 100);
    BitmapImage bmp = new BitmapImage();
    bmp.SetSource(ms);
}

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