C# 如何从我的应用程序访问我的CircleProgressBar？

我成功地实施了以下解决方案：

我唯一的问题是，我的AXML使用：

xmlns:local="clr-namespace:MyNameSpace"

<local:CircularProgressBar HorizontalAlignment="Center" VerticalAlignment="Center"
     SegmentColor="#FF878889" StrokeThickness="8" Percentage="100" />
                <local:CircularProgressBar HorizontalAlignment="Center" VerticalAlignment="Center"
     Percentage="{Binding Value, ElementName=slider}" SegmentColor="#026873" StrokeThickness="8" />

---

您可以使用绑定制作类似的内容。也不要忘记

xmlns:DesignInControl="clr-namespace:***"
xmlns:converter="clr-namespace:***"

MainWindow.Xaml：

<Window.Resources>
    <converter:BooleanToVisibilityConverter x:Key="BooleanToVisibilityConverter"/>
</Window.Resources>
<Grid Visibility="{Binding Visibility, Converter={StaticResource BooleanToVisibilityConverter}}">
    <Grid.RowDefinitions>
        <RowDefinition Height="*"/>
        <RowDefinition Height="Auto"/>
    </Grid.RowDefinitions>
    <StackPanel Orientation="Horizontal" HorizontalAlignment="Center" VerticalAlignment="Center">
        <Grid HorizontalAlignment="Center" VerticalAlignment="Center">
            <DesignInControl:CircularProgressBar HorizontalAlignment="Center" VerticalAlignment="Center"
          SegmentColor="#FF878889" StrokeThickness="25" Percentage="100" />
            <DesignInControl:CircularProgressBar HorizontalAlignment="Center" VerticalAlignment="Center"
          Percentage="{Binding Percentage}" SegmentColor="#026873" StrokeThickness="25" />
        </Grid>
        <Grid HorizontalAlignment="Center" VerticalAlignment="Center"/>
        <Grid HorizontalAlignment="Center" VerticalAlignment="Center"/>
        <Grid HorizontalAlignment="Center" VerticalAlignment="Center"/>
    </StackPanel>
    <Slider x:Name="slider" Grid.Row="1" Maximum="100" Value="60" Visibility="Hidden"/>
</Grid>

---

控件是否没有可见性属性？您应该使用转换器将Visibility属性绑定到视图模型上的属性，以便VM属性只是控制显示或不显示的boleean。它只有一个名为CircularProgressBar.VisibilityProperty的字段，但这只是一个getter？如何访问在AXML中找到的实例DIt目前是我的应用程序中的一个列表框，上面有一个圆圈程序条。这个还能用吗DElegant解决方案，但它不与UserControl一起工作-您没有提到您有listbox。如果列表框中有CircleProgressBar。您只需更改FindAncestor的绑定即可。

<Window.Resources>
    <converter:BooleanToVisibilityConverter x:Key="BooleanToVisibilityConverter"/>
</Window.Resources>
<Grid Visibility="{Binding Visibility, Converter={StaticResource BooleanToVisibilityConverter}}">
    <Grid.RowDefinitions>
        <RowDefinition Height="*"/>
        <RowDefinition Height="Auto"/>
    </Grid.RowDefinitions>
    <StackPanel Orientation="Horizontal" HorizontalAlignment="Center" VerticalAlignment="Center">
        <Grid HorizontalAlignment="Center" VerticalAlignment="Center">
            <DesignInControl:CircularProgressBar HorizontalAlignment="Center" VerticalAlignment="Center"
          SegmentColor="#FF878889" StrokeThickness="25" Percentage="100" />
            <DesignInControl:CircularProgressBar HorizontalAlignment="Center" VerticalAlignment="Center"
          Percentage="{Binding Percentage}" SegmentColor="#026873" StrokeThickness="25" />
        </Grid>
        <Grid HorizontalAlignment="Center" VerticalAlignment="Center"/>
        <Grid HorizontalAlignment="Center" VerticalAlignment="Center"/>
        <Grid HorizontalAlignment="Center" VerticalAlignment="Center"/>
    </StackPanel>
    <Slider x:Name="slider" Grid.Row="1" Maximum="100" Value="60" Visibility="Hidden"/>
</Grid>

namespace WpfApplication
{
/// <summary>
/// Interaction logic for MainWindow.xaml
/// </summary>
public partial class MainWindow : Window
{
    public MainWindow()
    {
        InitializeComponent();
        DataContext = new Data();
    }
}

public class Data:INotifyPropertyChanged
{
    private bool visibility;
    public bool Visibility 
    { 
        get
        {
            return this.visibility;
        }

        set
        {
            this.visibility = value;
            this.RaisePropertyChanged("Visibility");
        }
    }

    private double percentage;
    public double Percentage 
    { 
        get
        {
            return this.percentage;
        }

        set
        {
            this.percentage = value;
            this.RaisePropertyChanged("Percentage");
        }
    }

    public Data()
    {
        Action SomeWork = new Action(DoWork);
        IAsyncResult result = SomeWork.BeginInvoke(null, null);
    }

    public void DoWork()
    {
        System.Threading.Thread.Sleep(3000);
        Visibility = true;
        for (int i=0;i<100;i++)
        {
            System.Threading.Thread.Sleep(300);
            Percentage += 1;
        }
    }

    public event PropertyChangedEventHandler PropertyChanged;

    private void RaisePropertyChanged(string info)
    {
        if (PropertyChanged!=null)
        {
            PropertyChanged(this, new PropertyChangedEventArgs(info));
        }
    }
}
}

class BooleanToVisibilityConverter : IValueConverter
{
    public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
    {
        if (value is Boolean && (bool)value)
        {
            return Visibility.Visible;
        }
        return Visibility.Collapsed;
    }

    public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
    {
        if (value is Visibility && (Visibility)value == Visibility.Visible)
        {
            return true;
        }
        return false;
    }
}