小编mwa*_*ner的帖子

我正在尝试在 .NET MAUI 中构建自定义控件，该控件应为其父级提供 ICommand 的 BindableProperty。这是我试图实现的目标的一个基本示例。

主页视图 (MainPage.xaml)

<?xml version="1.0" encoding="utf-8" ?>
<ContentPage xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
             xmlns:views="clr-namespace:SampleApp.Views"
             x:Class="SampleApp.MainPage">

    <views:MyCustomControl DoSomething="{Binding DoSomethingCommand}"></views:MyCustomControl>
</ContentPage>

MainPage 视图类 (MainPage.xaml.cs)

public partial class MainPage : ContentPage
{
    public MainPage()
    {
        InitializeComponent();
        BindingContext = new MainPageViewModel();
    }
}

MainPage 视图模型 (MainPageViewModel.cs)

public class MainPageViewModel : ObservableObject
{
    public ICommand ProcessNewScoreCommand { get; }

    public MainPageViewModel()
    {
        ProcessNewScoreCommand = new Command(DoSomething);
    }

    private void DoSomething()
    {
        // Do something
    }
}

MyCustomControl 视图类 (MyCustomControl.xaml.cs)

public partial class …