wpf Image动态加载图片终极解决办法 .

BitmapImage myBitmapImage = new BitmapImage();  

myBitmapImage.BeginInit();  

myBitmapImage.UriSource = new Uri(str, UriKind.Absolute);  

myBitmapImage.DecodePixelWidth = 2048;  

myBitmapImage.EndInit();  

 

Image img = new Image();

img.Source = myBitmapImage;