如何绘制正确的LiveChats线

Question

我想在UWP中创建一个折线图，LiveCharts是我的选择，但是当我测试其示例时，它的显示无效

我使用了此示例Sections，但不同的是我将它们放入了UserControl。

Xaml：

<UserControl
    x:Class="LiveChart.SectionsExample"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    xmlns:lvc="using:LiveCharts.Uwp"
    mc:Ignorable="d">

    <Grid Background="{ThemeResource ApplicationPageBackgroundThemeBrush}">
        <Grid.RowDefinitions>
            <RowDefinition Height="Auto"></RowDefinition>
            <RowDefinition Height="Auto"></RowDefinition>
            <RowDefinition Height="*"></RowDefinition>
        </Grid.RowDefinitions>
        <TextBlock Grid.Row="0" TextWrapping="Wrap">
            <Bold>New in 0.7.0</Bold> You can now have axis sections to highlight a range of values
        </TextBlock>
        <Button Grid.Row="1" Height="30" Click="UpdateAllOnClick" HorizontalAlignment="Stretch">
            Move All
        </Button>
        <lvc:CartesianChart Grid.Row="2" Series="{Binding SeriesCollection}">
            <lvc:CartesianChart.AxisY>
                <lvc:Axis Name="Axis">
                    <lvc:Axis.Sections>
                        <lvc:AxisSection Value="8.5" StrokeThickness="3" Stroke="#F9D648">
                            <lvc:AxisSection.Fill>
                                <SolidColorBrush Color="#A3A3FF" Opacity=".4"></SolidColorBrush>
                            </lvc:AxisSection.Fill>
                        </lvc:AxisSection>
                        <lvc:AxisSection Value="4" SectionWidth="4" Label="Good">
                            <lvc:AxisSection.Fill>
                                <SolidColorBrush Color="#CDCDCD" Opacity=".4"></SolidColorBrush>
                            </lvc:AxisSection.Fill>
                        </lvc:AxisSection>
                        <lvc:AxisSection Value="0" SectionWidth="4" Label="Bad">
                            <lvc:AxisSection.Fill>
                                <SolidColorBrush Color="#FF8585" Opacity=".4"></SolidColorBrush>
                            </lvc:AxisSection.Fill>
                        </lvc:AxisSection>
                    </lvc:Axis.Sections>
                </lvc:Axis>
            </lvc:CartesianChart.AxisY>
        </lvc:CartesianChart>
    </Grid>
</UserControl>

CodeBehind：

namespace LiveChart
{
    using System;
    using System.Linq;

    using LiveCharts;
    using LiveCharts.Defaults;
    using LiveCharts.Uwp;

    using Windows.UI;
    using Windows.UI.Xaml;
    using Windows.UI.Xaml.Controls;
    using Windows.UI.Xaml.Media;

    /// <summary>
    /// The sections example.
    /// </summary>
    public sealed partial class SectionsExample : UserControl
    {
        /// <summary>
        /// Initializes a new instance of the <see cref="SectionsExample"/> class.
        /// </summary>
        public SectionsExample()
        {
            this.InitializeComponent();
            this.SeriesCollection = new SeriesCollection
                                        {
                                            new LineSeries
                                                {
                                                    Values = new ChartValues<ObservableValue>
                                                                 {
                                                                     new ObservableValue(3),
                                                                     new ObservableValue(5),
                                                                     new ObservableValue(2),
                                                                     new ObservableValue(7),
                                                                     new ObservableValue(7),
                                                                     new ObservableValue(4)
                                                                 },
                                                    PointGeometrySize = 0,
                                                    StrokeThickness = 4,
                                                    Fill = new SolidColorBrush(Colors.Transparent)
                                                },
                                            new LineSeries
                                                {
                                                    Values = new ChartValues<ObservableValue>
                                                                 {
                                                                     new ObservableValue(3),
                                                                     new ObservableValue(4),
                                                                     new ObservableValue(6),
                                                                     new ObservableValue(8),
                                                                     new ObservableValue(7),
                                                                     new ObservableValue(5)
                                                                 },
                                                    PointGeometrySize = 0,
                                                    StrokeThickness = 4,
                                                    Fill = new SolidColorBrush(Colors.Transparent)
                                                }
                                        };

            this.DataContext = this;
        }

        /// <summary>
        /// Gets or sets the series collection.
        /// </summary>
        public SeriesCollection SeriesCollection { get; set; }

        /// <summary>
        /// The update all on click.
        /// </summary>
        /// <param name="sender">
        /// The sender.
        /// </param>
        /// <param name="e">
        /// The e.
        /// </param>
        private void UpdateAllOnClick(object sender, RoutedEventArgs e)
        {
            var r = new Random();

            foreach (var series in this.SeriesCollection)
            {
                foreach (var observable in series.Values.Cast<ObservableValue>())
                {
                    observable.Value = r.Next(0, 10);
                }
            }
        }
    }
}

我得到这个结果：

每个人都有解决方案吗？我想知道这是LiveCharts中的错误，还是我应该设置一个属性来解决此问题？