Wpf LiveCharts-填充/笔划绑定的DependencyProperty不起作用

Wpf LiveCharts-填充/笔划绑定的DependencyProperty不起作用,wpf,dependency-properties,livecharts,Wpf,Dependency Properties,Livecharts,我正在创建一个可重用控件,该控件使用LiveCharts绘制单线系列,但该控件的DependencyProperty存在问题。问题是我有3个要配置的依赖属性;一个是图表的值,一个是序列的填充颜色,最后一个是直线序列的笔划颜色。这是我的XAML: <UserControl x:Class="DataAnalyzer.Controls.QuickPlotSingleLogFile2" xmlns="http://schemas.microsoft.com/winfx/2006

我正在创建一个可重用控件,该控件使用LiveCharts绘制单线系列,但该控件的DependencyProperty存在问题。问题是我有3个要配置的依赖属性;一个是图表的值,一个是序列的填充颜色,最后一个是直线序列的笔划颜色。这是我的XAML:

<UserControl x:Class="DataAnalyzer.Controls.QuickPlotSingleLogFile2"
         xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
         xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
         xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
         xmlns:local="clr-namespace:DataAnalyzer.Controls"
         xmlns:lvc="clr-namespace:LiveCharts.Wpf;assembly=LiveCharts.Wpf"
         mc:Ignorable="d" 
         d:DesignHeight="450" d:DesignWidth="800"
         x:Name="parentControl">
<Grid x:Name="Grid_Container">
    <Grid.RowDefinitions>
        <RowDefinition Height="*"></RowDefinition>
    </Grid.RowDefinitions>
    <lvc:CartesianChart Name="ChartFile" 
                        Grid.Row="0" 
                        LegendLocation="None" 
                        DisableAnimations="true" 
                        Hoverable="true" 
                        DataTooltip="{x:Null}" 
                        Margin="10" 
                        BorderBrush="Black">
        <lvc:CartesianChart.Series>
            <lvc:LineSeries x:Name="LineSeries1" 
                            PointGeometry="{x:Null}" 
                            Values="{Binding PlotValues}" 
                            Fill="{Binding FillBrush}" 
                            Stroke="{Binding StrokeBrush}" 
                            AreaLimit="0"></lvc:LineSeries>
        </lvc:CartesianChart.Series>
        <lvc:CartesianChart.AxisX>
            <lvc:Axis Labels=" " Title="Time">
                <lvc:Axis.Separator>
                    <lvc:Separator IsEnabled="False"></lvc:Separator>
                </lvc:Axis.Separator>
            </lvc:Axis>
        </lvc:CartesianChart.AxisX>
    </lvc:CartesianChart>
</Grid>

下面是背后的代码:

public partial class QuickPlotSingleLogFile2 : UserControl, INotifyPropertyChanged
{

    // Formatter for the datetime in the x-axis for any series
    public Func<double, string> DateTimeSeriesFormatter { get; set; }

    #region PlotValues DP

    public ChartValues<double> PlotValues {
        get { return (ChartValues<double>)GetValue(PlotValuesProperty); }
        set { SetValue(PlotValuesProperty, value); }
        }

    public static readonly DependencyProperty PlotValuesProperty = DependencyProperty.Register("PlotValues", typeof(ChartValues<double>), typeof(QuickPlotSingleLogFile2));

    #endregion

    #region FillBrush DP

    public Brush FillBrush
    {
        get { return (Brush)GetValue(FillBrushProperty); }
        set { SetValue(FillBrushProperty, value); }
    }

    public static readonly DependencyProperty FillBrushProperty = DependencyProperty.Register("FillBrush", typeof(Brush), typeof(QuickPlotSingleLogFile2), new PropertyMetadata());

    #endregion

    #region StrokeBrush DP

    public Brush StrokeBrush
    {
        get { return (Brush)GetValue(StrokeBrushProperty); }
        set { SetValue(StrokeBrushProperty, value); }
    }

    public static readonly DependencyProperty StrokeBrushProperty = DependencyProperty.Register("StrokeBrush", typeof(Brush), typeof(QuickPlotSingleLogFile2), new PropertyMetadata(null));

    #endregion

    public QuickPlotSingleLogFile2()
    {
        InitializeComponent();

        Grid_Container.DataContext = this;

    }

    #region INotifyPropertyChanged Members
    public event PropertyChangedEventHandler PropertyChanged;

     protected void OnPropertyChanged([CallerMemberName]string propertyName = null)
    {
        PropertyChangedEventHandler handler = this.PropertyChanged;

        if (handler != null)
        {
            var e = new PropertyChangedEventArgs(propertyName);
            handler(this, e);
        }
    }
    #endregion

}
公共部分类QuickPlotSingleLogFile2:UserControl,INotifyPropertyChanged
{
//任何系列的x轴上日期时间的格式化程序
public Func datetimeseriesformter{get;set;}
#区域值
公共图表值{
获取{return(ChartValues)GetValue(PlotValuesProperty);}
set{SetValue(PlotValuesProperty,value);}
}
公共静态只读DependencyProperty PlotValuesProperty=DependencyProperty.Register(“PlotValues”、typeof(ChartValues)、typeof(QuickPlotSingleLogFile2));
#端区
#区域填充刷DP
公共灌木丛
{
获取{return(画笔)GetValue(FillBrushProperty);}
set{SetValue(FillBrushProperty,value);}
}
公共静态只读DependencyProperty FillBrushProperty=DependencyProperty.Register(“FillBrush”、typeof(Brush)、typeof(QuickPlotSingleLogFile2)、new PropertyMetadata());
#端区
#区域频闪刷
公共刷子
{
获取{return(Brush)GetValue(strokeBushProperty);}
set{SetValue(StrokeBrushProperty,value);}
}
公共静态只读DependencyProperty StrokeBrushProperty=DependencyProperty.Register(“StrokeBrush”、typeof(Brush)、typeof(QuickPlotSingleLogFile2)、new PropertyMetadata(null));
#端区
公共QuickPlotSingleLogFile2()
{
初始化组件();
Grid_Container.DataContext=this;
}
#区域INotifyProperty更改成员
公共事件属性更改事件处理程序属性更改;
受保护的OnPropertyChanged无效([CallerMemberName]字符串propertyName=null)
{
PropertyChangedEventHandler处理程序=this.PropertyChanged;
if(处理程序!=null)
{
var e=新的PropertyChangedEventArgs(propertyName);
处理者(本,e);
}
}
#端区
}

我的问题是,对于“填充”这样的属性,我是否还需要做更多的事情?我配置的PlotValuesProperty完全按照预期工作——绑定没有问题。但是我无法使fill或stroke笔刷的绑定工作——它不知何故丢失了,而livecharts为fill和stroke提供了默认值。这个用户控件在父窗口中使用,数据上下文最终成为窗口,这就是我想要的。我已经检查了调试器,以确保数据上下文设置正确,并且由于图表的值设置正确,因此它似乎可以工作。但填充/笔划出现了一些奇怪的情况

我找到了这个问题的答案。我不知道确切的原因,但我没有看到绑定工作的原因是因为我没有在主窗口中初始化填充/笔划属性

作为参考,我的主窗口原始代码(截断为仅显示此自定义控件的相关绑定)为:


突然,它起了作用

也许是个愚蠢的问题,但除了初始化之外,您是否设置过QuickPlotFill或QuickPlotStroke属性?你到底在哪里做的?我在我的主窗口做的。实际上,我有一个颜色选择器,允许用户为特定系列指定颜色,因此我从存储的字典中提取用户选择的任何颜色。因此,一旦它被初始化(我也不明白为什么我需要这样做),我可以随时编写颜色,它会在幕后自动更新并重新绘制情节。
public partial class MainWindow
{
    #region Binding QuickPlotValues
    private ChartValues<double> _quickPlotSingleLogFileValues;
    public ChartValues<double> QuickPlotSingleLogFileValues
    {
        get
        {
            return _quickPlotSingleLogFileValues;
        }
        set
        {
            _quickPlotSingleLogFileValues = value;
            OnPropertyChanged("QuickPlotSingleLogFileValues");
        }
    }
    #endregion

    #region Binding QuickPlotFill
    private Brush _quickPlotFill;
    public Brush QuickPlotFill
    {
        get
        {
            return _quickPlotFill;
        }
        set
        {
            _quickPlotFill = value;
            OnPropertyChanged("QuickPlotFill");
        }
    }
    #endregion

    #region Binding QuickPlotStroke
    private Brush _quickPlotStroke;
    public Brush QuickPlotStroke
    {
        get
        {
            return _quickPlotStroke;
        }
        set
        {
            _quickPlotStroke = value;
            OnPropertyChanged("QuickPlotStroke");
        }
    }
    #endregion
}
<vm:QuickPlotSingleLogFile2 x:Name="PreviewPlotSingleLogFile2"
                                            Grid.Row="1"
                                            Margin="20"
                                            VerticalAlignment="Stretch"
                                            MinHeight="250"
                                            PlotValues="{Binding QuickPlotSingleLogFileValues}"
                                            FillBrush="{Binding QuickPlotFill}"
                                            StrokeBrush="{Binding QuickPlotStroke}"/>
 #region Binding QuickPlotFill
    private Brush _quickPlotFill = new SolidColorBrush(Colors.Red);
    public Brush QuickPlotFill
    {
        get
        {
            return _quickPlotFill;
        }
        set
        {
            _quickPlotFill = value;
            OnPropertyChanged("QuickPlotFill");
        }
    }
    #endregion

    #region Binding QuickPlotStroke
    private Brush _quickPlotStroke = new SolidColorBrush(Colors.Green);
    public Brush QuickPlotStroke
    {
        get
        {
            return _quickPlotStroke;
        }
        set
        {
            _quickPlotStroke = value;
            OnPropertyChanged("QuickPlotStroke");
        }
    }
    #endregion