我试图在代码中设置WPF图像的源代码。图像作为资源嵌入到项目中。通过查看示例，我提出了下面的代码。由于某种原因，它不工作-图像不显示。
通过调试，我可以看到流包含图像数据。怎么了?
Assembly asm = Assembly.GetExecutingAssembly();
Stream iconStream = asm.GetManifestResourceStream("SomeImage.png");
PngBitmapDecoder iconDecoder = new PngBitmapDecoder(iconStream, BitmapCreateOptions.PreservePixelFormat, BitmapCacheOption.Default);
ImageSource iconSource = iconDecoder.Frames[0];
_icon.Source = iconSource;
图标的定义如下:<Image x:Name="_icon" Width="16" Height="16" />
当前回答
在遇到与您相同的问题并进行了一些阅读之后，我发现了解决方案—打包uri。
我在代码中做了以下事情:
Image finalImage = new Image();
finalImage.Width = 80;
...
BitmapImage logo = new BitmapImage();
logo.BeginInit();
logo.UriSource = new Uri("pack://application:,,,/AssemblyName;component/Resources/logo.png");
logo.EndInit();
...
finalImage.Source = logo;
或者更短，通过使用另一个BitmapImage构造函数:
finalImage.Source = new BitmapImage(
new Uri("pack://application:,,,/AssemblyName;component/Resources/logo.png"));
URI被分成几个部分:
Authority: application:/// Path: The name of a resource file that is compiled into a referenced assembly. The path must conform to the following format: AssemblyShortName[;Version][;PublicKey];component/Path AssemblyShortName: the short name for the referenced assembly. ;Version [optional]: the version of the referenced assembly that contains the resource file. This is used when two or more referenced assemblies with the same short name are loaded. ;PublicKey [optional]: the public key that was used to sign the referenced assembly. This is used when two or more referenced assemblies with the same short name are loaded. ;component: specifies that the assembly being referred to is referenced from the local assembly. /Path: the name of the resource file, including its path, relative to the root of the referenced assembly's project folder.
application:后面的三个斜杠必须用逗号代替:
注意:包URI的授权组件 是一个嵌入式URI，指向 包装，必须符合RFC 2396。 此外，“/”字符必须 替换为“，”字符， 以及保留字符，如“%” "?"必须转义。查看OPC 获取详细信息。
当然，还要确保将映像上的构建操作设置为Resource。
其他回答
如果你已经有了一个流，并且知道它的格式，你可以使用这样的东西:
static ImageSource PngStreamToImageSource (Stream pngStream) {
var decoder = new PngBitmapDecoder(pngStream,
BitmapCreateOptions.PreservePixelFormat, BitmapCacheOption.Default);
return decoder.Frames[0];
}
var uriSource = new Uri(@"/WpfApplication1;component/Images/Untitled.png", UriKind.Relative);
foo.Source = new BitmapImage(uriSource);
这将在名为“WpfApplication1”的程序集中加载名为“Untitled.png”的图像到名为“Images”的文件夹中，其“Build Action”设置为“Resource”。
你只是漏了一点。
要从任何程序集获取嵌入式资源，你必须像我在这里提到的那样，用你的文件名提到程序集名称:
Assembly asm = Assembly.GetExecutingAssembly();
Stream iconStream = asm.GetManifestResourceStream(asm.GetName().Name + "." + "Desert.jpg");
BitmapImage bitmap = new BitmapImage();
bitmap.BeginInit();
bitmap.StreamSource = iconStream;
bitmap.EndInit();
image1.Source = bitmap;
最简单的方法:
var uriSource = new Uri("image path here");
image1.Source = new BitmapImage(uriSource);
如果你的图像存储在ResourceDictionary中，你只需要一行代码就可以做到:
MyImage.Source = MyImage.FindResource("MyImageKeyDictionary") as ImageSource;
