WPF ContextMenu对象与ItemsSource的 - 如何绑定到命令中的每个项目？ [英] WPF ContextMenu with ItemsSource - how to bind to Command in each item?

问题描述

  

可能重复：结果
  <一href=\"http://stackoverflow.com/questions/898852/specify-command-for-menuitem-in-a-datatemplate\">Specify命令菜单项中的一个DataTemplate

我有那再present菜单项的对象（的ViewModels）的集合。他们每个人都有，我想在单击菜单项时执行的命令。

如果我想要做静态菜单，我这样做是这样的：

 ＆LT;＆文本菜单GT;
    ＆LT;菜单项标题={结合文本1}命令= {结合COMMAND1}＆GT;
    ＆LT;菜单项标题={结合文本2}命令= {绑定命令2}＆GT;
＆LT; /文本菜单＆GT;
 

但我不知道事先的项目（他们来自一个集合），我需要分配ContextMenu.ItemsSource - 并把文成的ItemTemplate

 ＆LT;文本菜单的ItemsSource ={结合MyMenuItems}＆GT;
    ＆LT; ContextMenu.ItemTemplate＆GT;
        ＆LT;＆DataTemplate的GT;
            ＆LT; TextBlock的文本={结合文本2}/＆GT; ＆LT;！ - 但是，在把命令绑定？ TextBlock.Command是没有意义的，我们必须菜单项进不去！ - ＆GT;
        ＆LT; / DataTemplate中＆GT;
    ＆LT; /ContextMenu.ItemTemplate>
＆LT; /文本菜单＆GT;
 

这样的话，但是，我没有地方绑定的命令 - ！因为我无法获得菜单项的每一行

任何意见，请？谢谢你，伙计们！

解决方案

 ＆LT; ContextMenu.ItemContainerStyle＆GT;
  ＆LT;风格的TargetType =菜单项＆GT;
    ＆LT; setter属性=命令VALUE ={结合AssociatedCommand}/＆GT;
  ＆LT; /样式和GT;
＆LT; /ContextMenu.ItemContainerStyle>
 

其中AssociatedCommand是保存ICommand设置视图模型对象的属性。

Possible Duplicate:
Specify Command for MenuItem in a DataTemplate

I have a collection of objects (viewmodels) that represent menu items. Each of them have a command that I would like to execute when a MenuItem is clicked.

If I wanted to do the menu statically, I do it like this:

<ContextMenu>
    <MenuItem Header="{Binding Text1}" Command={Binding Command1}>
    <MenuItem Header="{Binding Text2}" Command={Binding Command2}>
</ContextMenu>

but when I don't know the items in advance (they come from a collection), I need to assign ContextMenu.ItemsSource - and put a text into a ItemTemplate.

<ContextMenu ItemsSource="{Binding MyMenuItems}">
    <ContextMenu.ItemTemplate>
        <DataTemplate>
            <TextBlock Text="{Binding Text2}" /> <!-- But where to put Command binding? TextBlock.Command makes no sense, and we have no access to MenuItem! -->
        </DataTemplate>
    </ContextMenu.ItemTemplate>
</ContextMenu>

This way, however, I have no place to bind a Command to - because I can't get the MenuItem for every row!

Any advice, please? Thank you, guys!

解决方案

<ContextMenu.ItemContainerStyle>
  <Style TargetType="MenuItem">
    <Setter Property="Command" Value="{Binding AssociatedCommand}" />
  </Style>
</ContextMenu.ItemContainerStyle>

where AssociatedCommand is the property on the viewmodel object that holds the ICommand.

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