Xaml Xamarin中的Ivalue转换器属性

我有以下转换器，它具有两个属性：

public class ProgressConverter : BindableObject, IMarkupExtension, IValueConverter 
    {
        public static readonly BindableProperty CurrentProgressProperty = BindableProperty.Create("CurrentProgress", typeof(int), typeof(ProgressConverter));
        public static readonly BindableProperty GoalProgressProperty = BindableProperty.Create("GoalProgress", typeof(int), typeof(ProgressConverter));
        public int CurrentProgress
        {
            get { return(int) GetValue(CurrentProgressProperty); }
            set { SetValue(CurrentProgressProperty, value);}
        } 
        public int GoalProgress
        {
            get { return (int)GetValue(GoalProgressProperty); }
            set { SetValue(GoalProgressProperty, value);}
        }
        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
        {
            double progress = (double)CurrentProgress / (double)GoalProgress;
            return progress;
        }
        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
        {
            throw new NotImplementedException();
        }
        public object ProvideValue(IServiceProvider serviceProvider)
        {
            //throw new NotImplementedException();
            return this;
        }
        object IMarkupExtension.ProvideValue(IServiceProvider serviceProvider)
        {
            return ProvideValue(serviceProvider);
        }
    }

我在progressbar中使用它来设置这样的进度（这很好，没问题，取2除以5，然后将结果放入progressbar进度中）：

Itemsource设置：

public BadgeView(BadgesGroup badgesGroup)
        {
            InitializeComponent();
            BadgeLogo.Source = badgesGroup.Logo;
            var cardsview = new CardsView
            {
                IsClippedToBounds = true,
                IsCyclical = true,
                MoveWidthPercentage = 0.3,
                WidthRequest = 250,
                HeightRequest=250,
                ItemsSource = badgesGroup.Badges,
                ItemTemplate = new DataTemplate(() => new BadgePopUp())
            };
            cardsview.Children.Add(new IndicatorsControl());
            cardsview.Children.Add(new RightArrowControl());
            cardsview.Children.Add(new LeftArrowControl());
            card.Children.Add(cardsview);
        }

我如何使其符合第1点

如何使转换器从绑定中获取如下值：

<ProgressBar x:Name="Progressbar" ProgressColor="Purple" 
                 Progress="{Binding Converter={local:ProgressConverter CurrentProgress={Binding xCurrentProgress},GoalProgress={Binding xGoalProgress}}}">
    </ProgressBar>

---

因为使用上述代码将导致CurrentProgress和GoalProgress的值都通过0，而不是存储在其中的实际值。

您的问题很模糊，请具体说明您想做什么achieve@FreakyAli更新的问题更清楚，谢谢。我现在没有看到任何变化！我希望我的转换器采用如下绑定值：。。此代码将导致CurrentProgress和GoalProgress的值均通过0，而不是其中存储的实际值。@user2596181您好，我需要知道CardView中ItemSource的代码，您可以共享它。我会检查ItemSource的mdoel。这里可能不需要使用转换器。

public class badge {
string Name {get;set;}
string Description {get;set;}
int xCurrentProgress {get;set;}
int xGoalProgress {get;set;}
}

public BadgeView(BadgesGroup badgesGroup)
        {
            InitializeComponent();
            BadgeLogo.Source = badgesGroup.Logo;
            var cardsview = new CardsView
            {
                IsClippedToBounds = true,
                IsCyclical = true,
                MoveWidthPercentage = 0.3,
                WidthRequest = 250,
                HeightRequest=250,
                ItemsSource = badgesGroup.Badges,
                ItemTemplate = new DataTemplate(() => new BadgePopUp())
            };
            cardsview.Children.Add(new IndicatorsControl());
            cardsview.Children.Add(new RightArrowControl());
            cardsview.Children.Add(new LeftArrowControl());
            card.Children.Add(cardsview);
        }

<ProgressBar x:Name="Progressbar" ProgressColor="Purple" 
                 Progress="{Binding Converter={local:ProgressConverter CurrentProgress={Binding xCurrentProgress},GoalProgress={Binding xGoalProgress}}}">
    </ProgressBar>