Timepicker Updatesourcetrigger=propertychanged doesn't change value

Question

I'm hosting a WPF usercontrol in a windows form In the wpf user control I am using a timepicker from wpfToolkit.extended

If I use the up or downkeys or just enter a time in the textfield the source is not updated allthough I am using Updatesourcetrigger = propertychanged.

When I select a time in the dropdrownlist everything works the way it should. This is the namespace of the toolkit.

xmlns:xctk="clr-namespace:Xceed.Wpf.Toolkit;assembly=WPFToolkit.Extended"

This is the xaml for the timepicker

  <xctk:TimePicker  Format="LongTime" TimeInterval="00:15:00.000" Value="{Binding Path=StartTime, UpdateSourceTrigger=PropertyChanged}" ></xctk:TimePicker>

If I click outside the WPFusercontrol without changing the focus to another control in the wpf usercontrol first. The Binded time is not updated.

Any idea how I can fix this?

Answer 1

Found a solution for this problem: I've given the TimePicker a name (In this case 'tpFrom') then I've used the TextBoxBase.TextChanged event on the TimePicker. This is what the Xaml looks like now:

<xctk:TimePicker Name="tpFrom"  Format="LongTime"  TextBoxBase.TextChanged="TimePicker_TextChanged"  TimeInterval="00:15:00.000" Value="{Binding Path=StartTime, UpdateSourceTrigger=PropertyChanged}"></xctk:TimePicker>

In the code behind in our eventhandler we'll put the focus on our timepicker.

  private void TimePicker_TextChanged(object sender, TextChangedEventArgs e)
    {
        tpFrom.Focus();            
    }

Now everytime the text changes, the value changes as well and the problem is solved :-)