在.net中，如何获取当前程序域AppDomain.CurrentDomain中的其它程序集的运行时的某个对象实例？
我要做一个插件引擎，用到一些反射的机制，但是在获取当前程序域AppDomain.CurrentDomain中的其它程序集中的运行时对象时，不知道怎么获得，想了很久没有头绪，请大侠们不吝赐教！谢谢！

[解决办法]
跨Appdomain读取对象时，好像要封送，对象可序列化或者实现MarshalByRefObject类。
[解决办法]
可以参考clr via C#的Appdomain这一章，里面有详细介绍跨Appdomain读取运行时对象。
[解决办法]
类似这样，加载程序集->反射得出类型—>操作：

C# code

internal static class ExceptionTree {   public static void Go() {      // Explicitly load the assemblies that we want to reflect over      LoadAssemblies();      // Recursively build the class hierarchy as a hyphen-separated string      Func<Type, String> ClassNameAndBase = null;      ClassNameAndBase = t => "-" + t.FullName +          ((t.BaseType != typeof(Object)) ? ClassNameAndBase(t.BaseType) : String.Empty);      // Define our query to find all the public Exception-derived types in this AppDomain's assemblies      var exceptionTree =          (from a in new[] { typeof(Exception).Assembly } // AppDomain.CurrentDomain.GetAssemblies()           from t in a.GetExportedTypes()           where t.IsClass && t.IsPublic && typeof(Exception).IsAssignableFrom(t)           let typeHierarchyTemp = ClassNameAndBase(t).Split('-').Reverse().ToArray()           let typeHierarchy = String.Join("-", typeHierarchyTemp, 0, typeHierarchyTemp.Length - 1)           orderby typeHierarchy           select typeHierarchy).ToArray();      // Display the Exception tree      Console.WriteLine("{0} Exception types found.", exceptionTree.Length);      foreach (String s in exceptionTree) {         // For this Exception type, split its base types apart         String[] x = s.Split('-');         // Indent based on # of base types and show the most-derived type         Console.WriteLine(new String(' ', 3 * (x.Length - 1)) + x[x.Length - 1]);      }   }   private static void LoadAssemblies() {      String[] assemblies = {            "System,                    PublicKeyToken={0}",            "System.Core,               PublicKeyToken={0}",            "System.Data,               PublicKeyToken={0}",            "System.Design,             PublicKeyToken={1}",            "System.DirectoryServices,  PublicKeyToken={1}",            "System.Drawing,            PublicKeyToken={1}",            "System.Drawing.Design,     PublicKeyToken={1}",            "System.Management,         PublicKeyToken={1}",            "System.Messaging,          PublicKeyToken={1}",            "System.Runtime.Remoting,   PublicKeyToken={0}",            "System.Security,           PublicKeyToken={1}",            "System.ServiceProcess,     PublicKeyToken={1}",            "System.Web,                PublicKeyToken={1}",            "System.Web.RegularExpressions, PublicKeyToken={1}",            "System.Web.Services,       PublicKeyToken={1}",            "System.Windows.Forms,      PublicKeyToken={0}",            "System.Xml,                PublicKeyToken={0}",         };      String EcmaPublicKeyToken = "b77a5c561934e089";      String MSPublicKeyToken = "b03f5f7f11d50a3a";      // Get the version of the assembly containing System.Object      // We'll assume the same version for all the other assemblies      Version version = typeof(System.Object).Assembly.GetName().Version;      // Explicitly load the assemblies that we want to reflect over      foreach (String a in assemblies) {         String AssemblyIdentity =            String.Format(a, EcmaPublicKeyToken, MSPublicKeyToken) +               ", Culture=neutral, Version=" + version;         Assembly.Load(AssemblyIdentity);      }   }}