C# WPF mvvm 页面加载与关闭

来点小鱼干喵

于 2025-02-26 14:22:19 发布

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文章标签： c# wpf 开发语言

本文链接：https://blog.youkuaiyun.com/singele/article/details/145877899

版权

ViewModel

public class ManualDataViewModel
{
    public ICommand LoadedCommand { get; }
    public ICommand UnloadedCommand { get; }

    public ManualDataViewModel()
    {
        LoadedCommand = new RelayCommand(OnLoaded);
        UnloadedCommand = new RelayCommand(OnUnloaded);
    }

    private void OnLoaded()
    {
        System.Diagnostics.Debug.WriteLine("Page Loaded");
    }

    private void OnUnloaded()
    {
        System.Diagnostics.Debug.WriteLine("Page Unloaded");
    }
}

Xaml

 <b:Interaction.Triggers>
        <b:EventTrigger EventName="Loaded">
            <b:InvokeCommandAction Command="{Binding LoadedCommand}" />
        </b:EventTrigger>
        <b:EventTrigger EventName="Unloaded">
            <b:InvokeCommandAction Command="{Binding UnloadedCommand}" />
        </b:EventTrigger>
    </b:Interaction.Triggers>