MVVM中的Window_Load事件 [英] Window_Load event in MVVM

问题描述

我需要编写一些要在WPF-MVVM的window_load()期间执行的函数.每个按钮将具有自己的要执行的命令. MVVM模型中有什么命令可用于window_load()事件?

I need to write some functions to be executed during the window_load() in WPF-MVVM. Every button will have their own command to be executed. Whereas is there any command available for window_load() event in MVVM Model ?

推荐答案

您将必须使用交互来执行此操作，即在事件上调用命令.

You will have to use interactions to do that i.e to invoke command on event.

<Window
    xmlns:intr="clr-namespace:System.Windows.Interactivity;assembly=System.Windows.Interactivity" 
>
    <intr:Interaction.Triggers>
        <intr:EventTrigger EventName="Loaded">
            <intr:InvokeCommandAction Command="{Binding WindowLoaded}"/>
        </intr:EventTrigger>
    </intr:Interaction.Triggers>
    <!-- the rest of your XAML here -->
</Window>

Window.Interactivity命名空间具有EventTrigger和InvokeCommandAction.

Window.Interactivity namespace has EventTrigger and InvokeCommandAction.

别忘了WindowLoaded是一个属性.

public ICommand WindowLoaded { get; set; }

您稍后必须创建新的RelayCommand/RoutedUICommand才能实际接收回调.

You later have to create new RelayCommand/RoutedUICommand to actually receive the callback.

谢谢

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