Question

我有以下代码：

 <StackPanel Orientation="Vertical">                      
                        <GridView                    
                    Background="Azure"
                    x:Name="ContactList"                  
                    ItemsSource="{Binding Path=Users}"
                    SelectedItem="{Binding SelectedUser, Mode=TwoWay}">

                            <interactivity:Interaction.Behaviors>
                                    <core:EventTriggerBehavior EventName="SelectionChanged">
                                    <core:InvokeCommandAction 
                                    Command="{Binding MyCommandOnTheViewModel, Mode=OneWay}"/>
                                    </core:EventTriggerBehavior>
                            </interactivity:Interaction.Behaviors>

                            <GridView.ItemTemplate>
                                <DataTemplate>                              
                                <Border Width="300" Height="Auto" BorderThickness="1">                                   
                                    <StackPanel Orientation="Vertical">
                                        <TextBlock HorizontalAlignment="Left">
                                    <Run FontWeight="Bold" Text="{Binding Name}" />                            
                                    <Run Text="{Binding Age}" />                                      
                                        </TextBlock>
                                        <StackPanel Orientation="Horizontal">
                                                <Button Content="Button1" HorizontalAlignment="Left"></Button>
                                                <Button Content="Button2" HorizontalAlignment="Right"></Button>
                                        </StackPanel>
                                    </StackPanel>                                 
                                </Border>                                
                            </DataTemplate>
                        </GridView.ItemTemplate>                       
                    </GridView>
                    </StackPanel>

此时，当我单击列表中的项目时，命令：MyCommandOnTheViewModel将被执行。如您所见，我还有一个包含两个按钮的StackPanel。如何将两个单独的命令绑定到每个按钮？

我一直试图给我的按钮名称，以为我能以某种方式执行以下操作：

 <interactivity:Interaction.Behaviors>
                                    <core:EventTriggerBehavior EventName="SelectionChanged" ELEMENTNAME="MyButtonsName">
                                    <core:InvokeCommandAction 
                                    Command="{Binding MyCommandOnTheViewModel, Mode=OneWay}"/>
                                    </core:EventTriggerBehavior>
                            </interactivity:Interaction.Behaviors>

但似乎没有这样的工作。任何提示赞赏！

这对我有用：

<Button Content="MyButton"                                                  
Command ="{Binding ElementName=ContactList,Path=DataContext.MyCommand}"></Button>

感谢您的帮助@Utsav

Answer 1

您可以为每个按钮提供Command属性。通过这种方式，您可以轻松地在viewmodel中将两个单独的命令与单击事件上的两个按钮绑定。

请参阅下面的代码。

<StackPanel Orientation="Vertical">                      
                <GridView                    
                Background="Azure"
                x:Name="ContactList"                  
                ItemsSource="{Binding Path=Users}"
                SelectedItem="{Binding SelectedUser, Mode=TwoWay}">

                        <interactivity:Interaction.Behaviors>
                                <core:EventTriggerBehavior EventName="SelectionChanged">
                                <core:InvokeCommandAction 
                                Command="{Binding MyCommandOnTheViewModel, Mode=OneWay}"/>
                                </core:EventTriggerBehavior>
                        </interactivity:Interaction.Behaviors>

                        <GridView.ItemTemplate>
                            <DataTemplate>                              
                            <Border Width="300" Height="Auto" BorderThickness="1">                                   
                                <StackPanel Orientation="Vertical">
                                    <TextBlock HorizontalAlignment="Left">
                                <Run FontWeight="Bold" Text="{Binding Name}" />                            
                                <Run Text="{Binding Age}" />                                      
                                    </TextBlock>
                                    <StackPanel Orientation="Horizontal">
                                            <Button Content="Button1" HorizontalAlignment="Left" Command="{Binding CommandLeftBtn}"></Button>
                                            <Button Content="Button2" HorizontalAlignment="Right" Command="{Binding CommandRightBtn}"></Button>
                                    </StackPanel>
                                </StackPanel>                                 
                            </Border>                                
                        </DataTemplate>
                    </GridView.ItemTemplate>                       
                </GridView>
                </StackPanel>

从DataTemplate执行命令

1 个答案: