如果你的视图模型已经实现了INotifyPropertyChanged-你可以尝试用null/empty参数提升PropertyChangedEvent-这应该会强制更新所有绑定的属性-更多细节在这里。

public void RaiseAllProperties()
{
    PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(null));
}

我使用CustomView的一种方法是：

using Xamarin.Forms;

namespace Xam.CustomViews.ContentsViews
{
    [XamlCompilation(XamlCompilationOptions.Compile)]
    public partial class FeatherButton : ContentView
    {
        // ... Existing code ...

        public FeatherButton()
        {
            InitializeComponent();
            PropertyChanged += OnPropertyChanged;
        }

        private void OnPropertyChanged(object sender, PropertyChangedEventArgs e)
        {
            if (e.PropertyName == StyleProperty.PropertyName)
            {
                UpdateVisualProperties();
            }
        }

        private void UpdateVisualProperties()
        {
            OnPropertyChanged(nameof(TextColor));
            OnPropertyChanged(nameof(BackgroundColor));
            OnPropertyChanged(nameof(BorderColor));
            OnPropertyChanged(nameof(BorderWidth));
        }

        // ... Existing code ...
    }
}