ToolStripControlHost

//Declare a class that inherits from ToolStripControlHost. 
public class ToolStripMonthCalendar : ToolStripControlHost
{
  // Call the base constructor passing in a MonthCalendar instance. 
  public ToolStripMonthCalendar() : base (new MonthCalendar()) { }

  public MonthCalendar MonthCalendarControl
  {
    get
    {
      return Control as MonthCalendar;
    }
  }

  // Expose the MonthCalendar.FirstDayOfWeek as a property. 
  public Day FirstDayOfWeek
  {
    get
    {
      return MonthCalendarControl.FirstDayOfWeek;
    }
    set { MonthCalendarControl.FirstDayOfWeek = value; }
  }

  // Expose the AddBoldedDate method. 
  public void AddBoldedDate(DateTime dateToBold)
  {
    MonthCalendarControl.AddBoldedDate(dateToBold);
  }

  // Subscribe and unsubscribe the control events you wish to expose. 
  protected override void OnSubscribeControlEvents(Control c)
  {
    // Call the base so the base events are connected. 
    base.OnSubscribeControlEvents(c);

    // Cast the control to a MonthCalendar control.
    MonthCalendar monthCalendarControl = (MonthCalendar) c;

    // Add the event.
    monthCalendarControl.DateChanged +=
      new DateRangeEventHandler(OnDateChanged);
  }

  protected override void OnUnsubscribeControlEvents(Control c)
  {
    // Call the base method so the basic events are unsubscribed. 
    base.OnUnsubscribeControlEvents(c);

    // Cast the control to a MonthCalendar control.
    MonthCalendar monthCalendarControl = (MonthCalendar) c;

    // Remove the event.
    monthCalendarControl.DateChanged -=
      new DateRangeEventHandler(OnDateChanged);
  }

  // Declare the DateChanged event. 
  public event DateRangeEventHandler DateChanged;

  // Raise the DateChanged event. 
  private void OnDateChanged(object sender, DateRangeEventArgs e)
  {
    if (DateChanged != null)
    {
      DateChanged(this, e);
    }
  }
}