Wpf 将事件处理程序分配给自定义样式中定义的ContextMenu项

我创建了带有预定义菜单项的关联菜单样式：

    <Style TargetType="{x:Type ContextMenu}" x:Key="DataGridColumnFilterContextMenu">                
                <Setter Property="ContextMenu.Template">
                <Setter.Value>
                    <ControlTemplate>
                        <Border BorderBrush="#868686"
                                BorderThickness="1"
                                Background="#FAFAFA"> 
                                <Grid MaxHeight="500">
                                <Grid.RowDefinitions>
                                    <RowDefinition Height="Auto"/>
                                    <RowDefinition Height="*"/>
                                </Grid.RowDefinitions>
                                <StackPanel>
                                    <MenuItem Header="Filtrēt" StaysOpenOnClick="True" Name="DynSearch">
                                        <MenuItem.Icon>
                                            <Image   RenderOptions.BitmapScalingMode="NearestNeighbor"
                                                     RenderOptions.EdgeMode="Aliased" 
                                                     Source="/Furniture;component/Resources/search4.png" />
                                        </MenuItem.Icon>
                                    </MenuItem>
                                    <Separator  Margin="20 5 20 0"  Height="2" Width="Auto" />
                                    <MenuItem Margin="5 5 0 0" StaysOpenOnClick="True" >
                                        <MenuItem.Template>
                                            <ControlTemplate >
                                                <CheckBox Padding="15 0 0 0" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" >Iezīmēt/Atzīmēt visus</CheckBox>
                                            </ControlTemplate>
                                        </MenuItem.Template>
                                        <MenuItem.Icon>
                                            <Image   RenderOptions.BitmapScalingMode="NearestNeighbor"
                                                     RenderOptions.EdgeMode="Aliased" 
                                                     Source="/Furniture;component/Resources/search4.png" />
                                        </MenuItem.Icon>
                                    </MenuItem>
                                    <Separator Margin="20 5 20 0" Height="2" Width="Auto" />
                                    <RadioButton Margin="5 5 0 0" Padding="15 0 0 0" GroupName="Sorting" Content="Augoša secībā" IsChecked="True"/>
                                    <RadioButton Margin="5 5 0 0" Padding="15 0 0 0" GroupName="Sorting" Content="Dilstoša secībā" />
                                    <Separator Margin="20 5 20 5" Height="2" Width="Auto" />
                                </StackPanel>
                                <ScrollViewer Grid.Row="1" 
                                              Margin="1,0,1,0"                                            
                                              CanContentScroll="True"
                                              VerticalScrollBarVisibility="Auto"
                                              Grid.ColumnSpan="2">
                                        <ItemsPresenter KeyboardNavigation.DirectionalNavigation="Cycle" />
                                    </ScrollViewer>
                                </Grid>                              
                        </Border>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
        </Style>

当我点击调试器时，它并没有出现MiFiltre_-Click方法。我尝试了不同的活动，比如MouseDown和PreviewMouseDown。我还试图绑定ICommand，但这也不起作用

然后我搜索了这个问题，发现cm.Template.LoadContent（）实际上可能会创建ContextMenu模板的新实例，我正在尝试将事件处理程序绑定到不同的控件实例。然后我尝试使用VisualTreeHelper和LogicalTreeHelper获取ContextMenu节点控件，但这也不起作用

以下是一些问题：

如何实现Click事件处理程序绑定

如果第一个问题太难回答 很难，那么如何定义ContextMenu子对象的当前实例呢 定制的

---

我将假定此菜单样式是在名为“MyResources.xaml”的资源字典中定义的

在同一个项目文件夹中创建一个类文件，并将其命名为“MyResources.xaml.cs”

将其设置为如下所示的部分类：

namespace WhateverNamespace
{
    public partial class MyResources
    {
        private void FilterMenuItem_Click(object sender, RoutedEventArgs e)
        {
            MenuItem mi = (MenuItem)sender;

            //  Below, PlacementTarget is the control the user right-clicked on. 
            //  Use that directly if you want that instead of its viewmodel. 

            //  This works with the conventional ContextMenu defined below.
            //ViewModel viewModel = ((FrameworkElement)((ContextMenu)mi.Parent).PlacementTarget).DataContext as ViewModel;

            //  This works with your template design. The only difference is 
            //  TemplatedParent instead of Parent. 
            ViewModel viewModel = 
                ((FrameworkElement)((ContextMenu)mi.TemplatedParent).PlacementTarget)
                .DataContext as ViewModel;

            MessageBox.Show("FilterMenuItem_Click");
        }
    }
}

为资源字典指定一个

x:Class

属性：

<ResourceDictionary 
    x:Class="WhateverNamespace.MyResources"

---

我不能这样做，因为我需要在其他类实例的事件处理程序中使用一些变量。顺便说一句，我在App.xaml中保留了这种样式。@Andrew_Miller在单击处理程序中查看查看模型的更新。我从未见过上下文菜单的实现方式与您的相同，但我相信您一定能找到一种方法。@Andrew_Miller哎呀，结果很简单。再次更新。PlacementTarget不是UserControl，而是类似于ContextMenu所在的按钮，但没关系。我绑定了ContextMenu标记所需的所有内容，最重要的是在该处理程序中找到它。非常感谢，埃德·普朗克特！现在我可以做我想做的事了。

<ResourceDictionary 
    x:Class="WhateverNamespace.MyResources"

<MenuItem 
    Click="FilterMenuItem_Click"
    Header="Filtrēt" 
    StaysOpenOnClick="True" 
    Name="DynSearch">

<ContextMenu x:Key="DataGridColumnFilterContextMenu">
    <MenuItem 
        Click="FilterMenuItem_Click"
        Header="Filtrēt" 
        StaysOpenOnClick="True" 
        Name="DynSearch">
        <MenuItem.Icon>
            <Image
                RenderOptions.BitmapScalingMode="NearestNeighbor"
                RenderOptions.EdgeMode="Aliased" 
                Source="/Furniture;component/Resources/search4.png"
                />
        </MenuItem.Icon>
    </MenuItem>
    <Separator />
    <MenuItem StaysOpenOnClick="True">
        <MenuItem.Header>
            <CheckBox>Iezīmēt/Atzīmēt visus</CheckBox>
        </MenuItem.Header>
        <MenuItem.Icon>
            <Image   
                RenderOptions.BitmapScalingMode="NearestNeighbor"
                RenderOptions.EdgeMode="Aliased" 
                Source="/Furniture;component/Resources/search4.png"
                />
        </MenuItem.Icon>
    </MenuItem>
    <Separator />
    <MenuItem>
        <MenuItem.Header>
            <RadioButton GroupName="Sorting" Content="Augoša secībā" IsChecked="True"/>
        </MenuItem.Header>
    </MenuItem>
    <MenuItem>
        <MenuItem.Header>
            <RadioButton GroupName="Sorting" Content="Dilstoša secībā" IsChecked="True"/>
        </MenuItem.Header>
    </MenuItem>
</ContextMenu>