silverlight - Datepicker updates Timepicker -

i have form datepicker , timepicker both bound same property model

here simple model:

private datetime _end; [required] public datetime end {         {         return _end;     }     set     {         _end = value;         raisepropertychanged(() => end);     } } 

the viewmodel has property of modelobject.

my xaml looks this

<sdk:datepicker selecteddate="{binding path=currentappointment.end, mode=twoway}"/> <toolkit:timepicker value="{binding path=currentappointment.end, mode=twoway}" /> 

is there simple way precent time changing when pick date (it goes 00:00 because datepicker sets date 2011-04-29 00:00:00) or have make property time in model , put date , time when want put in database?

this question same as

using silverlight datepicker , timepicker together

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