如何防止列表视图中的所有按钮文本更改xamarin表单

public class CustomButton : Button
{
    public static readonly BindableProperty IsEnabledProperty =
        BindableProperty.Create(nameof(IsEnabled), typeof(bool), typeof(CustomButton), true);

    public bool IsEnabled
    {
        get { return (bool)GetValue(IsEnabledProperty); }
        set { SetValue(IsEnabledProperty, value); }
    }
}

<ContentPage xmlns:local="clr-namespace:YourNamespace"
             xmlns:forms="clr-namespace:Xamarin.Forms;assembly=Xamarin.Forms.Core">
    <ContentPage.Resources>
        <ResourceDictionary>
            <Style TargetType="local:CustomButton" BasedOn="{StaticResource {x:Type forms:Button}}">
                <Setter Property="TextColor" Value="Black" />
                <Setter Property="FontSize" Value="16" />
                <!-- 其他按钮样式设置 -->
            </Style>
        </ResourceDictionary>
    </ContentPage.Resources>
    
    <ContentPage.Content>
        <ListView ItemsSource="{Binding YourItems}">
            <ListView.ItemTemplate>
                <DataTemplate>
                    <ViewCell>
                        <local:CustomButton Text="{Binding ButtonText}" IsEnabled="{Binding IsButtonEnabled}" />
                    </ViewCell>
                </DataTemplate>
            </ListView.ItemTemplate>
        </ListView>
    </ContentPage.Content>
</ContentPage>

public class YourViewModel : INotifyPropertyChanged
{
    private bool isButtonEnabled;
    public bool IsButtonEnabled
    {
        get { return isButtonEnabled; }
        set
        {
            if (isButtonEnabled != value)
            {
                isButtonEnabled = value;
                OnPropertyChanged(nameof(IsButtonEnabled));
            }
        }
    }

    // 其他属性和方法

    public YourViewModel()
    {
        // 初始化按钮可用状态
        IsButtonEnabled = true;
    }

    // 在需要更改按钮可用状态的地方调用此方法
    private void ChangeButtonEnabledStatus()
    {
        IsButtonEnabled = false; // 或者根据需要设置为true
    }

    // INotifyPropertyChanged实现
    public event PropertyChangedEventHandler PropertyChanged;

    protected virtual void OnPropertyChanged(string propertyName)
    {
        PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
    }
}