-MVVM模式（封装数据绑定类）)
知识点1. 数据绑定数据绑定类 与 图形操作在同一个类中2. X轴上显示点数主类 中3. 添加随机值在图表中 值针对Y轴值4. 清空图表5. 图标titel显示实例图表控件绑定 SeriesCollectionA Utils_ChartA.cs中lvc:CartesianChart x:NameLiveChartsA Margin10,146,185,51 Series{Binding SeriesCollectionA} Background#FFF8FCFD LegendLocationTop /lvc:CartesianChart提示框绑定 MsgTips Utils_ChartA.cs中Label Grid.Row2 Grid.Column0 FontSize12 Background#22FF0000 Content{Binding MsgTips} /Utils_ChartA.cs(数据绑定类 与 图形操作在同一个类中)using System; using System.Collections.Generic; using System.ComponentModel; using System.Diagnostics; using System.Runtime.CompilerServices; using System.Text; using System.Windows.Media; using LiveCharts; using LiveCharts.Wpf; namespace Wpf_Math.MyUC_TestChart { public class Utils_ChartA : INotifyPropertyChanged { private string _msgTips; private SeriesCollection _seriesCollectionA; public Utils_ChartA() { // 在构造函数中初始化 _seriesCollectionA new SeriesCollection(); } public string MsgTips { get _msgTips; set { _msgTips value; OnPropertyChanged(); } } public SeriesCollection SeriesCollectionA { get _seriesCollectionA; set { if (_seriesCollectionA ! value) { _seriesCollectionA value; OnPropertyChanged(); } } } public void InitializeLiveCharts1(int XPonitLength) { if (XPonitLength 0) XPonitLength 100; LineSeries myLineseries new LineSeries() //实例化一条折线图 { Title M485-----电压测试图, //设置折线的标题 StrokeThickness 1, // 设置折线粗细 LineSmoothness 1, //折线图直线形式 0 or 1 PointGeometry null, //折线图的无点样式 Stroke Brushes.Red, // 红色线条 Values new ChartValuesdouble(new Double[XPonitLength]) //添加折线图的数据(X轴划分点数) }; SeriesCollectionA.Add(myLineseries); } public void addData(double n) { //通过Dispatcher在工作线程中更新窗体的UI元素 Debug.Write(n n \r\n); SeriesCollectionA[0].Values.Add(n); SeriesCollectionA[0].Values.RemoveAt(0); } public void Clear(CartesianChart Chart) { Chart.Series.Clear(); //清空数据 InitializeLiveCharts1(0); //重复新初始化 } public event PropertyChangedEventHandler? PropertyChanged; protected void OnPropertyChanged([CallerMemberName] string name null) PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(name)); } }主操作界面using System; using System.Collections.Generic; using System.Diagnostics; using System.Text; using System.Windows; using System.Windows.Controls; using System.Windows.Data; using System.Windows.Documents; using System.Windows.Input; using System.Windows.Media; using System.Windows.Media.Imaging; using System.Windows.Navigation; using System.Windows.Shapes; using LiveCharts; using LiveCharts.Wpf; namespace Wpf_Math.MyUC_TestChart { public partial class UC_ChartA : UserControl { int i; Utils_ChartA ChartA new Utils_ChartA(); public UC_ChartA() { InitializeComponent(); this.DataContext ChartA; ChartA.MsgTips 提示; ChartA.InitializeLiveCharts1(0); } private void Button_Click(object sender, RoutedEventArgs e) { Button button (Button)sender; ChartA.MsgTips 你点击了-- button.Content i; //Debug.Write(你点击了--btn_calulate\\r\n) switch (button.Name) { case btn_addA: { ChartA.addData(new Random().Next(0, 30)); break; } case btn_addB: { ChartA.addData(new Random().Next(80, 99)); break; } case btn_clear:{ ChartA.Clear(LiveChartsA);break;} default: break; } } } }将持续更新
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