protected override void OnApplyTemplate()
{
base.OnApplyTemplate();
LayoutRoot = GetTemplateChild("LayoutRoot") as Grid;
header = GetTemplateChild("header") as CalendarHeader;
yearheader = GetTemplateChild("yearheader") as CalendarYearHeadar;
semanticzoomDate = GetTemplateChild("semanticzoomDate") as SemanticZoom;
gridviewDays = GetTemplateChild("gridviewDays") as GridView;
gridviewMonths = GetTemplateChild("gridviewMonths") as GridView;
Days = new ObservableCollection<Day>();
Months = new ObservableCollection<Month>();
Years = new ObservableCollection<Year>();
this.Loaded += Calendar_Loaded;
this.header.LeftButtonClick += header_LeftButtonClick;
this.header.RightButtonClick += header_RightButtonClick;
this.yearheader.LeftButtonClick += yearheader_LeftButtonClick;
this.yearheader.RightButtonClick += yearheader_RightButtonClick;
this.gridviewDays.ItemClick += gridviewDays_ItemClick;
this.semanticzoomDate.ViewChangeStarted += semanticzoomDate_ViewChangeStarted;
}