如何从资源中的控件发送的事件中获取父控件

问题描述

我在Datarid的资源中定义了一个上下文菜单.在上下文菜单的Click事件中，我想检查父控件(DataGrid)的名称.我尝试了VisualTreeHelper.GetParent()和LogicalTreeHelper.GetParent()，但都没有反映xaml中的层次结构.如何从Click事件获取DataGrid控件?感谢您的回答.

I defined a context menu in the resources of a Datarid. In the Click event of the context menu I want to check the name of the parent control (DataGrid). I tried VisualTreeHelper.GetParent() and LogicalTreeHelper.GetParent() but neither reflects the hierarchy in the xaml. How do I get the DataGrid Control from the Click event? Thanks for your answers.

代码:

private void datagridTargetDelete_Click(object sender, RoutedEventArgs e)
{
    // Check the name of the DataGrid here...
}

XAML:

<DataGrid Name="datagridTarget">
    <DataGrid.Resources>
        <ContextMenu x:Key="DGTContextMenu">
            <MenuItem Header="Delete" Click="datagridTargetDelete_Click">
                <MenuItem.Icon>
                    <Image Height="16" Width="16" Source="{Binding ContextDeleteIcon}"/>
                </MenuItem.Icon>
            </MenuItem>
        </ContextMenu>
    </DataGrid.Resources>
    <DataGrid.Columns>
        <DataGridTemplateColumn Header="" Width="Auto" IsReadOnly="True">
            <DataGridTemplateColumn.CellTemplate>
                <DataTemplate>
                    <Image ContextMenu="{DynamicResource DGTContextMenu}" Height="16" Width="16" Source="{Binding ObjectImage}" />
                </DataTemplate>
            </DataGridTemplateColumn.CellTemplate>
        </DataGridTemplateColumn>
    </DataGrid.Columns>
</DataGrid>

推荐答案

在这种情况下，您可能需要考虑在父元素上带有CommandBinding的RoutedCommand.我认为这实际上就是应该使用ContextMenu的方式.这样，WPF就会为您找到父对象，而您不必在逻辑树中搜索它.

You might want to consider a RoutedCommand with a CommandBinding on the parent element in this case. This is actually how ContextMenu is supposed to be used, I think. That way, WPF would find the parent object for you, you wouldn't have to search the logical tree for it.

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