在 DataTemplate 中绑定 ContextMenu

Question

我有：

 <ListBox>
            <ListBox.Resources>
                <DataTemplate DataType="{x:Type ViewModels:StyleViewModel}">
                    <DockPanel>                            
                        <Button Content="{Binding Name}" Tag="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type ListBox}}}">
                            <Button.ContextMenu>
                                <ContextMenu>
                                    <MenuItem Header="Delete" Command="{Binding PlacementTarget.Tag.DataContext.RemoveMember1FavoriteStyleCommand}" CommandParameter="{Binding}" />
                                </ContextMenu>
                            </Button.ContextMenu>
                        </Button>                            
                    </DockPanel>
                </DataTemplate>
            </ListBox.Resources>
        </ListBox>

我想要实现的是将上下文菜单的菜单项中的命令绑定到在视图模型中定义的 ICommand，该视图模型是列表框的数据上下文，并且命令参数应该是 StyleViewModel，但是我尝试过没有成功。有人能指出我正确的方向吗？

Answer 1

找到了！

<ListBox ItemsSource="{Binding ActiveCustomer.Member1FavoriteStyles}" ItemsPanel="{StaticResource ListBoxStyleItemsPanelAsVerticalStackPanel}" ItemContainerStyle="{StaticResource ListBoxItemContainerStyle}" Background="Transparent" BorderThickness="0">
            <ListBox.Resources>
                <DataTemplate DataType="{x:Type ViewModels:StyleViewModel}">
                    <DockPanel>                            
                        <Button Content="{Binding Name}" Tag="{Binding DataContext, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type ListBox}}}">
                            <Button.ContextMenu>
                                <ContextMenu>
                                    <MenuItem Header="Remove" Command="{Binding PlacementTarget.Tag.RemoveMember1FavoriteStyleCommand, RelativeSource={RelativeSource AncestorType=ContextMenu}}" CommandParameter="{Binding}" />
                                </ContextMenu>
                            </Button.ContextMenu>
                        </Button>                            
                    </DockPanel>
                </DataTemplate>
            </ListBox.Resources>
        </ListBox>

Answer 2

现在几乎可以工作，除了现在 CommandParameter="{Binding}" 没有返回 StyleViewModel：

 <ListBox ItemsSource="{Binding ActiveCustomer.Member1FavoriteStyles}" ItemsPanel="{StaticResource ListBoxStyleItemsPanelAsVerticalStackPanel}" ItemContainerStyle="{StaticResource ListBoxItemContainerStyle}" Background="Transparent" BorderThickness="0">
            <ListBox.Resources>
                <DataTemplate DataType="{x:Type ViewModels:StyleViewModel}">
                    <DockPanel>
                        <Button Content="{Binding Name}" Tag="{Binding DataContext,RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type ListBox}}}">
                            <Button.ContextMenu>
                                <ContextMenu DataContext="{Binding RelativeSource={RelativeSource Mode=Self}, Path=PlacementTarget.Tag}">
                                    <MenuItem Header="{Binding ActiveCustomer.Member1FirstName}" Command="{Binding RemoveMember1FavoriteStyleCommand}" CommandParameter="{Binding}" />
                                </ContextMenu>
                            </Button.ContextMenu>
                        </Button>                            
                    </DockPanel>
                </DataTemplate>
            </ListBox.Resources>
        </ListBox>

我想知道是否可以完成......