DatePicker typed input not changing Selected Date

Dec 27, 2010 at 11:00 PM

When my users select a date via the Calander control within the DatePicker, the value gets correctly bound to the underlying object. BUT, if the user types the date within the DatePicker, then clicks a button, the text is not set to the SelectedDate property.

The user has to remove the cursor from the TextBox within the DatePicker for the bound object to be updated.

 <toolkit:DatePicker Name="_dpField" Grid.Column="1" MinWidth="100"
ToolTip="{Binding Path=ToolTipText}"
SelectedDate="{Binding Path=Value, UpdateSourceTrigger=PropertyChanged, Mode=TwoWay}"/>

HELP! how do i make sure that this typed value is used within the buttons event code?