Can anyone help me in providing some useful stuff to create an outlook plugin using Visual studio.Net 3.5(C#.net) and outlook 2007

using System;  using System.Collections.Generic;  using System.Text;  using System.Windows.Forms;  using Extensibility;  using Microsoft.Office.Core;  using Microsoft.Office.Interop.Outlook;    namespace OutlookAddinSample  {      public class Connect : Object, IDTExtensibility2      {          private Application applicationObject;          private object addInInstance;          private CommandBarButton toolbarButton;          Explorer currentExplorer = null;            public void OnConnection(object application,              ext_ConnectMode connectMode, object addInInst,              ref Array custom)          {              applicationObject =                   (Microsoft.Office.Interop.Outlook.Application)application;              addInInstance = addInInst;              if (connectMode != Extensibility.ext_ConnectMode.ext_cm_Startup)              {                  OnStartupComplete(ref custom);              }          }            public void OnDisconnection(ext_DisconnectMode              disconnectMode,              ref Array custom)          {              if (disconnectMode !=                   Extensibility.ext_DisconnectMode.ext_dm_HostShutdown)              {                  OnBeginShutdown(ref custom);              }              applicationObject = null;          }            public void OnAddInsUpdate(ref Array custom)          {          }            public void OnStartupComplete(ref Array custom)          {              CommandBars commandBars =                   applicationObject.ActiveExplorer().CommandBars;              try              {                  this.toolbarButton =                       (CommandBarButton)                      commandBars["Standard"].Controls["Hello"];              }              catch (System.Exception)              {                  this.toolbarButton =                       (CommandBarButton)commandBars["Standard"].Controls.Add(1,                           System.Reflection.Missing.Value,                           System.Reflection.Missing.Value,                           System.Reflection.Missing.Value,                           System.Reflection.Missing.Value);                  this.toolbarButton.Caption = "Hello";                  this.toolbarButton.Style = MsoButtonStyle.msoButtonCaption;              }              this.toolbarButton.Tag = "Hello Button";              this.toolbarButton.OnAction = "!<MyAddin1.Connect>";              this.toolbarButton.Visible = true;              this.toolbarButton.Click +=                   new Microsoft.Office.Core._CommandBarButtonEvents_ClickEventHandler(                      this.OnToolbarButtonClick);          }            public void OnBeginShutdown(ref Array custom)          {              this.toolbarButton.Delete(System.Reflection.Missing.Value);              this.toolbarButton = null;          }            private void OnToolbarButtonClick(CommandBarButton cmdBarbutton, ref bool cancel)          {              MessageBox.Show("Hello World", "My Addin");          }      }  }