WPF: binding viewmodel property of type DateTime to Calendar inside ItemsControl -

i have problem wpf binding. want bind list of months itemscontrol shows calendar control each month. each rendered calendar shows datetime.now,not bound datetimes. know why happening?

this have far:

the mainwindow.xaml

<window x:class="calendarlisttest.mainwindow"     xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"     title="mainwindow" height="350" width="525"> <grid>     <itemscontrol x:name="calendarlist">         <itemscontrol.itemtemplate>             <datatemplate>                 <calendar displaydate="{binding currentdate}" />             </datatemplate>         </itemscontrol.itemtemplate>     </itemscontrol> </grid> 

** place collection assigned itemssource**

        private void window_loaded( object sender, routedeventargs e )     {         calendarlist list = new calendarlist( );         list.add( new calendarmonth( ) { currentdate = datetime.parse( "1.1.1979" ) } );         list.add( new calendarmonth( ) { currentdate = datetime.parse( "1.2.1979" ) } );         list.add( new calendarmonth( ) { currentdate = datetime.parse( "1.3.1979" ) } );          calendarlist.itemssource = list;     } 

the calendarmonth viewmodel:

public class calendarmonth {     private datetime _currentdate;      public datetime currentdate     {         { return _currentdate; }         set { _currentdate = value; }     }  } 

and collection bind itemscontrol:

public class calendarlist : observablecollection<calendarmonth> { } 

now, result:

why happening?

edit: when providing <calendar displaydate="{binding currentdate, mode=oneway}" /> binding works.

the issue appears how calendar initializes displaydate property. this:

public calendar() {     // ...     base.setcurrentvalueinternal(displaydateproperty, datetime.today); } 

it appears though displaydate being initialized before binding established, still pushed binding source if set after. bug.

you can work around using like:

public class mycalendar : calendar {     public mycalendar() {         this.clearvalue(displaydateproperty);     } } 

or establish binding @ later time (i.e. when calendar loaded) using event handler or attached behavior.