WPF:列表视图:使用 MVVM 模式在 ListView 项上绑定双击事件 [英] WPF: List-View: Binding double-click event on ListView Items using MVVM pattern

问题描述

使用 MVVM 模式我正在绑定 ListView 控件的 Item 源，使用下面的 xaml 代码绑定双击事件，

Using MVVM pattern I am binding the Item source of a ListView control, binded double click event using the below xaml code,

实现使用:

  <i:Interaction.Triggers>
     <i:EventTrigger EventName="MouseDoubleClick">
          <z:EventToCommand Command="{Binding RelativeSource={RelativeSource TemplatedParent},Path=MouseDoubleClick}"/>
      </i:EventTrigger>

当我双击列表视图项时，我无法执行我的功能.

when i double click on the listview items am not able to perform my functionality.

如何在 MVVM 模式中有效地附加双击事件??

How can i attach a double click event in MVVM pattern effecitively??

推荐答案

我在我的项目中使用它.

i use this in my projects.

 <DataGrid.InputBindings>
     <MouseBinding MouseAction="LeftDoubleClick"
             Command="{Binding Path=EditEntityCommand}"
             CommandParameter="{Binding ElementName=DataGrid, Path=SelectedItem}"/>
  </DataGrid.InputBindings>

对于 ListView，您必须将 Binding 设置为 ListViewItems

ok for ListView you have to set the Binding to the ListViewItems

    <ListView x:Name="listView1" Grid.Row="2" ItemsSource="{Binding VmUsers}">
        <ListView.ItemTemplate>
            <DataTemplate>
                <ContentPresenter Content="{Binding}">
                    <ContentPresenter.InputBindings>
                        <MouseBinding MouseAction="LeftDoubleClick" 
                                      Command="{Binding DataContext.MyCommand, ElementName=listView1}" 
                                      CommandParameter="{Binding ElementName=listView1,Path=SelectedItem}"/>
                    </ContentPresenter.InputBindings>
                </ContentPresenter>
            </DataTemplate>
        </ListView.ItemTemplate>
    </ListView>

或者你使用交互工具

<ListView Name="listView1" ItemsSource="{Binding Cars}">
  <i:Interaction.Triggers>
    <i:EventTrigger EventName="LeftDoubleClick">
        <i:InvokeCommandAction Command="{Binding ItemSelectCommand}" CommandParameter="{Binding ElementName=listView1,Path=SelectedItem}" />
    </i:EventTrigger>
   </i:Interaction.Triggers>
 </ListView>

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