An easy way to add a Ribbon Panel Office 2007 style

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Data;
using System.Text;
using System.Windows.Forms;
using System.Diagnostics;


namespace RibbonStyle {

    /// <summary>
    /// The TabPageSwitcher works on Z-Order principals - it Dock.Fills all
    /// the contents and uses BringToFront to quickly bring a page to the front
    /// </summary>
    [Designer(typeof(TabPageSwitcherDesigner))]       // specify a custom designer
    [System.ComponentModel.DesignerCategory("code")]  // when this file is opened, open the editor instead of the designer
    [Docking(DockingBehavior.AutoDock)]               // when this control is dropped onto the form, try to Dock.Fill
    [ToolboxItem(false)]                              // dont show this control in the toolbox, it will be added by the TabStripToolBoxItem
    public class TabPageSwitcher : ContainerControl {
        private TabStripPage selectedTabStripPage;
        private TabStrip tabStrip;

        public TabPageSwitcher() {
            ResetBackColor();
        }
        
        /// <summary>
        /// specify the default size for the control
        /// </summary>
        protected override Size DefaultSize {
            get {
                return new Size(60,60);
            }
        }
 

        /// <summary>
        /// specify a default padding to give a border around the control
        /// </summary>
        protected override Padding DefaultPadding {
            get {
                return new Padding(4, 0, 4, 2);
            }
        }

        /// <summary>
        /// Expose a Load event
        /// </summary>
        public event EventHandler Load;


        /// <summary>
        /// The associated TabStrip
        /// </summary>
        public TabStrip TabStrip {
            get {
               return tabStrip;
            }
            set {
                tabStrip = value;
            }
        }
        
        /// <summary>
        /// Specify the selected TabStripPage.
        /// </summary>
        public TabStripPage SelectedTabStripPage {
            get { return selectedTabStripPage; }
            set {
                if (selectedTabStripPage != value) {
                    
                    selectedTabStripPage = value;
                   
                    if (selectedTabStripPage != null) {
                        if (!Controls.Contains(value)) {
                            Controls.Add(selectedTabStripPage);
                            
                        }
                        else {
                            selectedTabStripPage.BringToFront();
                            
                        }
                    }

                  
                }
                
            }
        }

        /// <summary>
        /// Occurs when the selected tab has changed
        /// </summary>
        public event EventHandler SelectedTabStripPageChanged;


        /// <summary>
        /// Handle the OnHandleCreated event to fire the Load event.
        /// </summary>
        /// <param name="e"></param>
        protected override void OnHandleCreated(EventArgs e) {
            base.OnHandleCreated(e);
            if (!RecreatingHandle) {
                OnLoad(EventArgs.Empty);
            }
        }

        /// <summary>
        /// When the control is loaded, if we dont have a SelectedTabStripPage, look for one to activate.
        /// </summary>
        /// <param name="e"></param>
        protected virtual void OnLoad(EventArgs e) {
            if (this.Load != null) {
                Load(this, e);
            }

            if (!DesignMode) {

                this.TabStrip.SelectedTab = (Tab) this.TabStrip.Items[0];
                ((Tab)this.TabStrip.Items[0]).b_active = true;
                
            }
        }


        /// <summary>
        /// Override OnControlAdded, all controls added to this control should become Dock.Fill.
        /// </summary>
        /// <param name="e"></param>
        protected override void OnControlAdded(ControlEventArgs e) {
            e.Control.Dock = DockStyle.Fill;
            base.OnControlAdded(e);
        }

        /// <summary>
        /// occurs when the selected tab has changed
        /// </summary>
        /// <param name="e"></param>
        protected virtual void OnSelectedTabStripPageChanged(EventArgs e) {
            if (SelectedTabStripPageChanged != null) {
                SelectedTabStripPageChanged(this, EventArgs.Empty);
                
            }
        }

        #region DesignerSerialization Friendliness
        private bool ShouldSerializeBackColor() {
            return this.BackColor != Color.FromArgb(191, 219, 255);
        }
        public override void ResetBackColor() {
            this.BackColor = Color.FromArgb(191, 219, 255);
        }
        #endregion


       
    }
}