Work around for MaterialDesignInXamlToolkit TimePicker SelectedTimeChanged event

Question

I am using TimePicker from MaterialDesignInXamlToolkit. But it does not have a SelectedTimeChanged event similar to WPF stock DatePicker's SelectedDateChangedevent.

Currently I am binding the TimePicker's Text to get something similar. But the problem is that the Text gets updated a couple of times before user finishes picking the time.

Is anyone familiar with the toolkit and knows any work arounds?

XAML :

<UserControl x:Class="DateTimePickerTest.CustomDateTimePicker"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
             xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
             xmlns:local="clr-namespace:DateTimePickerTest"
             xmlns:materialDesign="http://materialdesigninxaml.net/winfx/xaml/themes"
             mc:Ignorable="d" 
             d:DesignHeight="500" d:DesignWidth="600">
    <Grid>

        <materialDesign:TimePicker Name="timePicker" Width="100" Height="30"
                                       Text="{Binding RelativeSource={RelativeSource Mode=FindAncestor,
                                        AncestorType={x:Type local:CustomDateTimePicker}},
                                        Path=Time}">
        </materialDesign:TimePicker>

    </Grid>
</UserControl>

C#:

using System.Windows;
using System.Windows.Controls;

namespace DateTimePickerTest
{
    public partial class CustomDateTimePicker : UserControl
    {
        private string _Time;
        public string Time
        {
            get { return _Time; }
            set
            {
                _Time = value;
                TimePicked();
            }
        }

        public CustomDateTimePicker()
        {
            InitializeComponent();
        }

        public void TimePicked()
        {
            if (timePicker.SelectedTime != null)
            {
                _Time = timePicker.SelectedTime.Value.ToString("hh:mm tt");
                MessageBox.Show(_Time);
            }
        }
    }
}

Answer 1

Try using the SelectedTime property instead of Text property of TimePicker control. Also set UpdateSourceTrigger=LostFocus. Like,

<mDesign:TimePicker Name="timePicker" Width="100" Height="30"
                    SelectedTime="{Binding Time, RelativeSource={RelativeSource Mode=FindAncestor,
                                                 AncestorType={x:Type local:CustomDateTimePicker}, 
                                   UpdateSourceTrigger=LostFocus}">
</mDesign:TimePicker>