C# Plugin frame

using RGiesecke.DllExport;

namespace ClassLibrary1
{
    public class Class1
    {
        [DllExport("pluginload")]
        public static void PluginLoad(IntPtr ptr)
        {
            MessageBox.Show("Hello World","C# plugin");
        }

        [DllExport("pluginrun")]
        public static void PluginRun(IntPtr ptr)
        {
            MessageBox.Show("I am running :)", "C# Plugin");
        }

        [DllExport("pluginunload")]
        public static void PluginUnload(IntPtr ptr)
        {
            MessageBox.Show("Goodbye World", "C# Plugin");
        }

    }
}