从dll调用方法[c＃]

Question

请告诉我如何从dll调用方法，你甚至可以使用通常的原始MessageBox.Show（＆＃34; Hello MessageBox＆＃34;）; 。 如果有的话，我加载了库...

    private void LoadPlugins(string path)
    {
        string[] files = Directory.GetFiles(path, "*.dll");

        foreach (string fname in files)
        {
            Assembly asm = Assembly.LoadFrom(fname);

            foreach (Type t in asm.GetExportedTypes())
            {
                if (typeof(PluginIface.IPlugin).IsAssignableFrom(t))
                {
                    PluginIface.IPlugin pi = (PluginIface.IPlugin)asm.CreateInstance(t.FullName);

                    pi.shwdialog(); // Here the window should appear)
                }
            }
        }
    }

带有界面的文件。

namespace PluginIface
{
    public interface IPlugin
    {
        void shwdialog();
    }
}

文件插件

namespace plg
{
    public class Plugin1 : IPlugin
    {
        public Plugin1()
        {
            System.Console.WriteLine("Plugin1 start");
        }

        public void shwdialog()
        {
            MessageBox.Show("Hello MessageBox");
        }
    }
}