在基于Web的插件体系结构中重用加载的程序集。最大化性能

如果你使用 LoadFrom AppDomain . 查看MSDN主题和Suzanne Cook的 Choosing a Binding Context 更多细节。

http://mef.codeplex.com/ 下面是我编写的一个快速示例(尽管我认为您应该寻找[ImportMany]属性,在该属性中,您可以获得每个 http://msdn.microsoft.com/en-us/library/dd460648.aspx#further_imports_and_importmany ):

namespace MEF_Interface
{
    // Interface to recognize the concrete implementation as
    public interface IMessageWriter
    {
        void WriteMessage();
    }
}

namespace MEF_HelloMessageWriter
{
    // Concrete implementation in another assembly 
    [Export(typeof(IMessageWriter))]
    public class HelloMessageWriter : IMessageWriter
    {
        public void WriteMessage() { Console.WriteLine("Hello!"); }
    }
}

namespace MEF_GoodbyeMessageWriter
{
    // Concrete implementation in another assembly 
    [Export(typeof(IMessageWriter))]
    public class GoodbyeMessageWriter : IMessageWriter
    {
        public void WriteMessage() { Console.WriteLine("Goodbye!"); }
    }
}

namespace MEF_Example
{
    class DIContainer
    {
        [Import]
        public IMessageWriter MessageWriter { get; set; }

        public DIContainer(string directory)
        {
            // all exports in a specified directory. Filtering is also available.
            DirectoryCatalog catalog = new DirectoryCatalog(directory);
            catalog.Refresh();
            var container = new CompositionContainer(catalog);
            container.ComposeParts(this);
        }
    }

    class Program
    {

        static void Main(string[] args)
        {
            string helloMessageWriterPath =
                @"C:\shared\Projects\MEF_Example\MEF_HelloMessageWriter\bin\Debug";

            string goodbyeMessageWriterPath =
                @"C:\shared\Projects\MEF_Example\MEF_GoodbyeMessageWriter\bin\Debug";

            DIContainer diHelloContainer = new DIContainer(helloMessageWriterPath);
            diHelloContainer.MessageWriter.WriteMessage();

            DIContainer diGoodbyeContainer = new DIContainer(goodbyeMessageWriterPath);
            diGoodbyeContainer.MessageWriter.WriteMessage();

            Console.ReadLine();
        }
    }
}

Spring.Net ? 您可以通过配置指定在运行时加载哪些程序集。它基本上为您处理所有的反射/缓存。