相关疑难解决方法(0)

我试图阻止我的应用程序锁定我的MEF插件目录中的DLL,以便我可以在运行时覆盖程序集(注意我实际上并没有尝试让MEF在运行时重新加载它们,在下一个应用程序启动很好,我只是不想要停止应用程序来复制)

我试图通过为我的mef加载的程序集创建一个阴影复制的应用程序域来执行此操作,如下所示:

[Serializable]
    public class Composer:IComposer
    {
        private readonly string _pluginPath;
        public Composer(IConfigurePluginDirectory pluginDirectoryConfig)
        {
            _pluginPath = pluginDirectoryConfig.Path;
            var setup = new AppDomainSetup();
            setup.ShadowCopyFiles = "true"; // really??? is bool not good enough for you?
            var appDomain = AppDomain.CreateDomain(AppDomain.CurrentDomain.FriendlyName + "_PluginDomain", AppDomain.CurrentDomain.Evidence, setup);

            appDomain.DoCallBack(new CrossAppDomainDelegate(DoWorkInShadowCopiedDomain));      
        }

        private void DoWorkInShadowCopiedDomain()
        {
            // This work will happen in the shadow copied AppDomain.

            var catalog = new AggregateCatalog();
            var dc = new DirectoryCatalog(_pluginPath);
            catalog.Catalogs.Add(dc);
            Container = new CompositionContainer(catalog);
        }

        public CompositionContainer Container { …

我正在尝试使用mef创建一个POC,我需要在一个准备好运行的项目中动态加载dll,为此我创建了一个控制台应用程序项目和一个类库

项目.

控制台应用程序项目的代码如下 -

namespace MefProjectExtension
{
    class Program
    {
        DirectoryCatalog catalog = new DirectoryCatalog(@"D:\MefDll", "*.dll");

        [Import("Method1", AllowDefault = true, AllowRecomposition = true)]
        public Func<string> method1;

        static void Main(string[] args)
        {
            AppDomainSetup asp = new AppDomainSetup();
            asp.ShadowCopyFiles = "true";

            AppDomain sp = AppDomain.CreateDomain("sp",null,asp);

            string exeassembly = Assembly.GetEntryAssembly().ToString();
            BaseClass p = (BaseClass)sp.CreateInstanceAndUnwrap(exeassembly, "MefProjectExtension.BaseClass");
            p.run();
        }
    }


    public class BaseClass : MarshalByRefObject
    {
        [Import("Method1",AllowDefault=true,AllowRecomposition=true)]
        public Func<string> method1;

        DirectoryCatalog catalog = new DirectoryCatalog(@"D:\MefDll", "*.dll");

        public void run()
        {
            FileSystemWatcher sw = new FileSystemWatcher(@"D:\MefDll", …