How to Load Images from Embedded Resources in C#?

Loading embedded resource images in C#

Images stored in the project resource area often need to be dynamically loaded into bitmap objects for display or operation. Here's how to do this in C#:

In a Windows Forms application:

Use embedded images: If you add the image to your project using Visual Studio's Properties/Resources UI, it will be embedded as a resource. You can then access it via the generated code:

var bmp = new Bitmap(WindowsFormsApplication1.Properties.Resources.myimage);

Use System.Resources.ResourceManager: You can manually create a ResourceManager to retrieve resources:

using System.Resources;

// 为当前程序集创建一个资源管理器
var rm = new ResourceManager(Assembly.GetExecutingAssembly());

// 从指定的资源名称加载图像
var bmp = (Bitmap)rm.GetObject("myimage");

In a WPF application:

Use PackUri: In WPF you can use PackUri to load images from resources:

var img = new Image();
img.Source = new BitmapImage(new Uri("pack://application:,,,/Resources/myimage.jpg"));

Use System.Windows.Media: Another option for WPF is to leverage System.Windows.Media:

using System.Windows.Media;
using System.Windows.Media.Imaging;

// 获取资源流
Stream stream = Assembly.GetExecutingAssembly().GetManifestResourceStream("Resources.myimage.jpg");

// 创建位图图像
var bmp = new BitmapImage();
bmp.BeginInit();
bmp.StreamSource = stream;
bmp.EndInit();

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