WPF如何将mousedown(命令/动作)绑定到标签 [英] WPF how to bind mousedown (command/action) to label

问题描述

我可以找到很多命令鼠标绑定到一个按钮，但是如果我想将一个 mousedown 事件绑定到一个绑定(MVVM 模式)呢?我找不到答案，可能是我看不到的很小的问题，但有人可以帮我解决这个问题吗?

I can find a lot of command mouse bindings to a button, but what if I want to bind a mousedown event to a binding (MVVM pattern)? I can't find the answer, probably it is something very small I don't see but can someone help me with this?

xml:

<DataTemplate>
  <Grid AllowDrop="True">
     <Rectangle Width="100" Height="50" RadiusX="4" RadiusY="4" Fill="LightBlue"/>
        <Label Content="{Binding EntityName}" MouseDown="{Binding DoSomething}"/>
   </Grid>
</DataTemplate>

推荐答案

您可以使用交互触发器:

You could use an interaction trigger:

<Label Content="{Binding EntityName}" xmlns:i="clr-namespace:System.Windows.Interactivity;assembly=System.Windows.Interactivity">
    <i:Interaction.Triggers>
        <i:EventTrigger EventName="MouseDown" >
            <i:InvokeCommandAction Command="{Binding DoSomething}" />
        </i:EventTrigger>
    </i:Interaction.Triggers>
</Label>

请参阅以下博文了解更多信息:https://blog.magnusmontin.net/2013/06/30/handling-events-in-an-mvvm-wpf-application/

Please refer to the following blog post for more information: https://blog.magnusmontin.net/2013/06/30/handling-events-in-an-mvvm-wpf-application/

您需要添加对 System.Windows.Interactivity 的引用.dll.

更新版本(上面提到的包不是库作者制作的):

Updated version (package mentioned above is not produced by library author):

• 安装 Microsoft.Xaml.Behaviors.Wpf NuGet 包.
• 添加对 http://schemas.microsoft.com/xaml/behaviors 的 xaml 引用

• Install the Microsoft.Xaml.Behaviors.Wpf NuGet package.
• add xaml reference to http://schemas.microsoft.com/xaml/behaviors

请参阅 https://devblogs.microsoft.com/dotnet/open-sourcing-xaml-behaviors-for-wpf/ 了解更多详情

See https://devblogs.microsoft.com/dotnet/open-sourcing-xaml-behaviors-for-wpf/ for more details

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