Xamarin RotateTo打破绑定

Question

我开始使用Xamarin，但我似乎无法将数据绑定挂钩。基本上我有一个按钮，RotationProperty设置为滑块ValueProperty的绑定，但按钮也有一个旋转90度的点击事件。绑定工作正常，click事件也是如此，但当我单击按钮进行旋转时，它似乎打破了RotationProperty按钮上的绑定。这是一个错误还是我做错了什么？ （我要猜测后者）。

文件后面的代码：

    Binding binding = new Binding();
    public Anim()
    {
        InitializeComponent();
        binding.Source = sldr0;
        binding.Path = "Value";
        btn0.SetBinding(RotationProperty, binding);
    }
    private void OnBtnClick(object sender, EventArgs e)
    {
        btn0.RemoveBinding(RotationProperty);
        var btn = (Button)sender;
        var change = btn.Rotation + 90;
        if (change > 360)
        {
            change = change - 360;
        }
        sldr0.Value = change;
        btn.RotateTo(change, 250U, Easing.SpringOut);
        btn0.SetBinding(RotationProperty, binding);
    }

XAML文件：

<?xml version="1.0" encoding="utf-8" ?>
<ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
             x:Class="App1.Views.Anim">
    <Grid>
      <Grid.RowDefinitions>
        <RowDefinition Height="*"></RowDefinition>
        <RowDefinition Height="*"></RowDefinition>
      </Grid.RowDefinitions>
      <Grid.ColumnDefinitions>
        <ColumnDefinition Width="*"></ColumnDefinition>
      </Grid.ColumnDefinitions>     
      <Button x:Name="btn0"
              Grid.Row="0"
              Text="Button"
              VerticalOptions="Center"
              HorizontalOptions="FillAndExpand"
              Clicked="OnBtnClick"/>
      <Slider x:Name="sldr0"
              Grid.Row="1"
              Value="0"
              Minimum="0"
              Maximum="360"
              VerticalOptions="Center"
              HorizontalOptions="FillAndExpand"></Slider>
      <Label Grid.Row="1"
             Text="{Binding Source={x:Reference btn0}, Path=Rotation}>
      </Label>
    </Grid>
</ContentPage>