.NET 下各种Resource的读取方式

1) Embedded Resource (Build Action 设置为 Embedded Resource) 在运行时使用GetManifestResourceStream读取

Image.FromStream(Assembly.GetExecutingAssembly().GetManifestResourceStream("WindowsFormsApplication1.Properties.Resources.warning.png"));

2) Resource (Build Action 设置为 Resource) 在运行时使用 Resource Manager读取

ResourceManager rm = new ResourceManager("WindowsFormsApplication1.g", typeof(Form1).Assembly);

Image warImg = null;
ResourceSet rs= rm.GetResourceSet(new System.Globalization.CultureInfo("en"),true,true);
foreach (DictionaryEntry item in rs)
{
        Console.WriteLine(item.Key.ToString());

        warImg = Bitmap.FromStream(item.Value as Stream);

}

3) 如果是直接添加图片到.Resx资源文件中，在运行时使用Resource Manager读取， 但读取方式有不同

ResourceManager rm = new ResourceManager("WindowsFormsApplication1.Properties.Resources", typeof(Form1).Assembly);

Bitmap warnImg = rm.GetObject("warning") as Bitmap;

以上是WinForm 和 WPF下的情况，在ASP.NET下还有另外一种嵌入资源方式，通过WebResourceAttribute, NOTE: 这里的image的build action必须是Embedded Resource.

添加 assembly attribute：

[assembly: WebResourceAttribute("ServerControl1.images.component.gif", "image/gif")]

客户端读取：

string imgURL = Page.ClientScript.GetWebResourceUrl(typeof(ServerControl1), ("ServerControl1.images.component.gif");