绑定到属性和ItemSource与DataGrid

Question

我有一个DataGrid目前有一个ItemsSource =“{绑定事件}”，我需要绑定到一个属性（OccurredOnLocal）不属于ItemsSource =“{绑定事件}“。我将如何做到这一点？

EventHistoryView.xaml

<sdk:DataGrid x:Name="dataGrid" Grid.Row="3" Margin="5,5" ItemsSource="{Binding Events}" IsReadOnly="True" AutoGenerateColumns="False" IsEnabled="{Binding DataIsCurrent}"> 
     <i:Interaction.Behaviors> 
      <behaviors:DataGridDoubleClickBehavior DoubleClickCommand="{Binding DoubleClickCommand}" CommandParameter="{Binding SelectedItem, ElementName=dataGrid}"/> 
     </i:Interaction.Behaviors> 
     <sdk:DataGrid.Columns> 
      <sdk:DataGridTextColumn Header="Priority" Binding="{Binding Priority}" CanUserReorder="True" CanUserResize="True" CanUserSort="True" Width="auto"/> 
      <sdk:DataGridCheckBoxColumn Header="Requires Ack" Binding="{Binding RequiresAcknowledgement}" Width="auto"/> 
      <sdk:DataGridTextColumn Header="Occurred On" Binding="{Binding MessageTime}" CanUserReorder="True" CanUserResize="True" CanUserSort="True" Width="*"/> 
      <sdk:DataGridTextColumn Header="Occurred On (Local)" Binding="{Binding OccurredOnLocal}" CanUserReorder="True" CanUserResize="True" CanUserSort="True" Width="*"/> 
      <sdk:DataGridTemplateColumn Header="Alarm" Width="*"> 
       <sdk:DataGridTemplateColumn.CellTemplate> 
        <DataTemplate> 
         <Border Background="{Binding DisplayColour}"> 
          <TextBlock Text="{Binding EventDisplayText}" VerticalAlignment="Center"/> 
         </Border> 
        </DataTemplate> 
       </sdk:DataGridTemplateColumn.CellTemplate> 
      </sdk:DataGridTemplateColumn> 
      <sdk:DataGridTextColumn Header="Controller" Binding="{Binding ControllerDisplayText}" CanUserReorder="True" CanUserResize="True" CanUserSort="True" Width="*"/> 
      <sdk:DataGridTextColumn Header="Reader" Binding="{Binding ReaderDisplayText}" CanUserReorder="True" CanUserResize="True" CanUserSort="True" Width="*"/> 
      <sdk:DataGridTextColumn Header="Card Number" Binding="{Binding BadgeId}" CanUserReorder="True" CanUserResize="True" CanUserSort="True" Width="auto"/> 
      <sdk:DataGridTextColumn Header="Person" Binding="{Binding PersonDisplayText}" CanUserReorder="True" CanUserResize="True" CanUserSort="True" Width="*"/> 
     </sdk:DataGrid.Columns> 
    </sdk:DataGrid> 

EventHistoryViewModel.cs

#region OccurredOnLocal Property 
    /// <summary> 
    /// The <see cref="OccurredOnLocal" /> property's name. 
    /// </summary> 
    public const string OccurredOnLocalPropertyName = "OccurredOnLocal"; 

    private TimeZoneInfo occurredOnLocal = TimeZoneInfo.Local; 

    /// <summary> 
    /// Gets the OccurredOnLocal property. 
    /// TODO Update documentation: 
    /// Changes to that property's value raise the PropertyChanged event. 
    /// This property's value is broadcasted by the Messenger's default instance when it changes. 
    /// </summary> 
    public TimeZoneInfo OccurredOnLocal 
    { 
     get 
     { 
      return occurredOnLocal; 
     } 

     set 
     { 
      if (occurredOnLocal == value) 
      { 
       return; 
      } 

      occurredOnLocal = value; 

      RaisePropertyChanged(OccurredOnLocalPropertyName); 
     } 
    } 
    #endregion 

感谢，
杰森

Answer 1

您可以使用RelativeSource XAML扩展

<sdk:DataGridTextColumn Header="Occurred On (Local)" Binding="{Binding DataContext.OccurredOnLocal, RelativeSource={RelativeSource AncestorType=DataGrid}}"/>