如何从另一个应用程序域调用类的方法

问题描述

我的应用程序想要调用来自另一个 AppDomain 的类的方法.

my application want to call a method of a class that is from another AppDomain.

       AppDomain env = AppDomain.CreateDomain(
            "test",
            null,
            new AppDomainSetup() { ApplicationName = "test" }
            );

        Assembly a = Assembly.LoadFrom("d:\\testenv1\\test2.dll");
        //env.AssemblyResolve += new ResolveEventHandler(env_AssemblyResolve);
        env.Load(a.FullName);

        ObjectHandle o = env.CreateInstance(a.FullName, "Test2.Class1");

现在我有了 Test2.Class1 的对象句柄，但我不知道如何调用 Class1 类的action"方法.

now i have the object handle of the Test2.Class1, but i have no idea how to invode the "action" method of the Class1 class.

action"方法是这样的:

the "action" method likes this:

    public void action()
    {
        Console.WriteLine(AppDomain.CurrentDomain.FriendlyName + " ok");
    }

我尝试使用o.unwrap()方法来获取对象的引用，但是好像对象已经转移到了当前域中，所以action"方法的输出打印了当前的域名.

i tried to use o.unwrap() method to get the reference of the object, but it seems the object has been transferred into the current domain, so the output of the "action" method prints the current domain name.

推荐答案

将要用于跨应用域通信的对象标记为 MarshalByRefObject.

Mark the object that you want to use for cross appdomain communication as MarshalByRefObject.

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