Binding debugging skills in wpf

 <Grid Grid.Row="1"> 
            <DataGrid x:Name="dgWorkLog" 
              AutoGenerateColumns="False" 
             HorizontalAlignment="Center" 
             FontSize="15" Width="750">
            <DataGrid.Columns >
                <DataGridTextColumn Header="上机时间" Width="*" Binding="{Binding TOnTime, Converter={StaticResource DebugDummyConverter}}"/>
                <DataGridTextColumn Header="下机时间" Width="*" Binding="{Binding ToffTime}" />
                <DataGridTextColumn Header="工作时长" Width="*" Binding="{Binding WorkTime}" />
                </DataGrid.Columns>
            </DataGrid>
            </Grid>

/// <summary>
    /// MainWindow.xaml 的交互逻辑
    /// </summary>
    public partial class MainWindow : Window
    {
		public MainWindow()
		{
			InitializeComponent();
			workLogEntities.Add(new Entity
			{
				TOnTime = "9:00",
				ToffTime="18:00",
				WorkTime="8小时",
			});
			this.dgWorkLog.ItemsSource = workLogEntities;
		}
		private List<Entity> workLogEntities = new List<Entity>();
	}
	public class DebugDummyConverter : IValueConverter
	{
		public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
		{
			Debugger.Break();
			return value;
		}

		public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
		{
			Debugger.Break();
			return value;
		}
	}

	public class Entity
	{
		public string TOnTime { get; set; }

		public string ToffTime { get; set; }

		public string  WorkTime { get; set; }

	}