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在DataTemplate中绑定ContextMenu

datatemplate contextmenu tags binding .net

1

L-Four · 技术社区 · 14 年前

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>

我试图实现的是将上下文菜单的menuitem中的命令绑定到viewmodel中定义的I command,viewmodel是listbox的datacontext,commandparameter应该是StyleViewModel,但我尝试的没有成功。有人能指点我正确的方向吗?

2 回复 | 直到 14 年前

1

5

L-Four 14 年前

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>

2

1

L-Four 14 年前

现在几乎可以工作了,除了now 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。。。