一个BitmapFrame和BitmapImage的WPF中之间的区别 [英] Difference between a BitmapFrame and BitmapImage in WPF
问题描述
一个BitmapFrame和BitmapImage的WPF中之间的区别是什么？你会在哪里使用每个（即为什么要使用BitmapFrame而不是BitmapImage的？）
What is the difference between a BitmapFrame and BitmapImage in WPF? Where would you use each (ie. why would you use a BitmapFrame rather than a BitmapImage?)
推荐答案
您应该坚持使用抽象类<一href="http://msdn.microsoft.com/en-us/library/system.windows.media.imaging.bitmapsource.aspx">BitmapSource如果你需要获取位，甚至的ImageSource 如果你只是想画它。
You should stick to using the abstract class BitmapSource if you need to get at the bits, or even ImageSource if you just want to draw it.
的实施BitmapFrame是实施只是面向对象的性质显示通过。你真的不应该有任何需要的实现之间的区别。 BitmapFrames可能包含一些额外信息（元数据），但通常不过是一种成像应用程序会关心。
The implementation BitmapFrame is just the object oriented nature of the implementation showing through. You shouldn't really have any need to distinguish between the implementations. BitmapFrames may contain a little extra information (metadata), but usually nothing but an imaging app would care about.
您会发现，从的BitmapSource继承这些其他类：
You'll notice these other classes that inherit from BitmapSource:
- BitmapFrame
- 的BitmapImage
- CachedBitmap
- ColorConvertedBitmap
- CroppedBitmap
- FormatConvertedBitmap
- RenderTargetBitmap
- TransformedBitmap
- WriteableBitmap的
您可以通过构造的BitmapImage对象从一个URI一个的BitmapSource：
You can get a BitmapSource from a URI by constructing a BitmapImage object:
Uri uri = ...;
BitmapSource bmp = new BitmapImage(uri);
Console.WriteLine("{0}x{1}", bmp.PixelWIdth, bmp.PixelHeight);
本的BitmapSource也可能来自德codeR。在这种情况下，你是间接使用BitmapFrames。
The BitmapSource could also come from a decoder. In this case you are indirectly using BitmapFrames.
Uri uri = ...;
BitmapDecoder dec = BitmapDecoder.Create(uri, BitmapCreateOptions.None, BitmapCacheOption.Default);
BitmapSource bmp = dec.Frames[0];
Console.WriteLine("{0}x{1}", bmp.PixelWIdth, bmp.PixelHeight);
这篇关于一个BitmapFrame和BitmapImage的WPF中之间的区别的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
