Automating Windows Applications Using Azure AppFabric Service Bus

using System;
using System.Collections.Generic;
using System.Text;
using System.Runtime.InteropServices;
using System.Windows.Forms;

namespace NotepadHandlerNET
{
    #region Register Command
    /// <summary>
    /// Class implementing Register command.
    /// </summary>
    public class register : ICommandImpl
    {
        public object DoCommand(string sender, object commandData)
        {
            new AddNotificationSubscriber(sender).Do();
            return "OK";
        }
    }
    #endregion

    #region CopyText Command
    /// <summary>
    /// Class implementing CopyText command.
    /// </summary>
    public class copytext : ICommandImpl
    {
        public object DoCommand(string sender, object commandData)
        {
            new NotifyAll("CopyText", Handler.sb.ToString()).Do();
            Handler.sb.Remove(0, Handler.sb.Length);
            return "OK";
        }   
    }
    #endregion

    #region FindDialog Command
    /// <summary>
    /// Class implementing FindDialog command.
    /// </summary>
    public class finddialog : ICommandImpl
    {
        [DllImport("NotepadPlugin.dll")]
        static extern int ActivateFindDialog();

        public object DoCommand(string sender, object commandData)
        {
            return (0 == ActivateFindDialog()) ? "OK" : "FAILURE";
        }   
    }
    #endregion

    #region AppendMenu Command
    /// <summary>
    /// Class implementing AppendMenu command.
    /// </summary>
    public class appendmenu : ICommandImpl
    {
        [DllImport("NotepadPlugin.dll")]
        static extern int AppendMainMenu([MarshalAs(UnmanagedType.BStr)] string menuName); 

        public object DoCommand(string sender, object commandData)
        {
            return (0 == AppendMainMenu((string)commandData)) ? "OK" : "FAILURE";
        }   
    }
    #endregion
}