如何删除绘图oxyplot C#

How to delete plot oxyplot C#

我有一个氧图。当调用方法 "OnClearAll" 时,我希望这些图表消失/被删除。

我想要这样的东西:

private void OnClearAll()
{
    HistoView.Clear(); 
}

但不存在。

我应该写什么来删除我的图表?

我的主面板xaml:

<oxy:PlotView x:Name ="HistoView" Model="{Binding HistogramModel}" Margin="476,304,102,459"/>

我的直方图class:

namespace myNameSpace
{
    public class Histogram : INotifyPropertyChanged
    {
        //private Histogram DataContext;

        public Collection<Item> Items { get; set; }
        private PlotModel histogramModel;
        public PlotModel HistogramModel //{ get; set; }
        {
            get { return histogramModel; }
            set { histogramModel = value; OnPropertyChanged("HistogramModel"); }
        }

        public class Item
        {
            public string Label { get; set; }
            public double Value { get; set; }
        }

        public event PropertyChangedEventHandler PropertyChanged;

        //NotifyPropertyChangedInvocator
        protected virtual void OnPropertyChanged(string propertyName)
        {
            PropertyChangedEventHandler handler = PropertyChanged;
            if (handler != null)
            {
                handler(this, new PropertyChangedEventArgs(propertyName));
            }
        }

        public Histogram(List<double> frequency, List<double> axis, string VariableName)
        {
            CreateRectangleBar(frequency, axis, VariableName);
        }

尝试将 ModelDataContext 属性 设置为 null:

private void OnClearAll()
{
    HistoView.DataContext = null; 
}