添加项目文件。

Live-Charts-master/Examples/WinForms/Cartesian/Zooming and Panning/ZomingAndPanningExample.cs

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+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Data;
+using System.Drawing;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Forms;
+using System.Windows.Media;
+using LiveCharts;
+using LiveCharts.Defaults;
+using LiveCharts.Wpf;
+using Color = System.Drawing.Color;
+using Point = System.Windows.Point;
+
+namespace Winforms.Cartesian.Zooming_and_Panning
+{
+    public partial class ZomingAndPanningExample : Form
+    {
+        public ZomingAndPanningExample()
+        {
+            InitializeComponent();
+
+            var gradientBrush = new LinearGradientBrush
+            {
+                StartPoint = new System.Windows.Point(0, 0),
+                EndPoint = new Point(0, 1)
+            };
+            gradientBrush.GradientStops.Add(new GradientStop(System.Windows.Media.Color.FromRgb(33, 148, 241), 0));
+            gradientBrush.GradientStops.Add(new GradientStop(Colors.Transparent, 1));
+
+
+            cartesianChart1.Series.Add(new LineSeries
+            {
+                Values = GetData(),
+                Fill = gradientBrush,
+                StrokeThickness = 1,
+                PointGeometry = null
+            });
+
+            cartesianChart1.Zoom = ZoomingOptions.X;
+
+            cartesianChart1.AxisX.Add(new Axis
+            {
+                LabelFormatter = val => new System.DateTime((long)val).ToString("dd MMM")
+            });
+
+            cartesianChart1.AxisY.Add(new Axis
+            {
+                LabelFormatter = val => val.ToString("C")
+            });
+
+        }
+
+        private ChartValues<DateTimePoint> GetData()
+        {
+            var r = new Random();
+            var trend = 100;
+            var values = new ChartValues<DateTimePoint>();
+
+            for (var i = 0; i < 100; i++)
+            {
+                var seed = r.NextDouble();
+                if (seed > .8) trend += seed > .9 ? 50 : -50;
+                values.Add(new DateTimePoint(System.DateTime.Now.AddDays(i), trend + r.Next(0, 10)));
+            }
+
+            return values;
+        }
+
+        private void ClearZoom()
+        {
+            //to clear the current zoom/pan just set the axis limits to double.NaN
+
+            cartesianChart1.AxisX[0].MinValue = double.NaN;
+            cartesianChart1.AxisX[0].MaxValue = double.NaN;
+            cartesianChart1.AxisY[0].MinValue = double.NaN;
+            cartesianChart1.AxisY[0].MaxValue = double.NaN;
+        }
+
+        private void ZomingAndPanningExample_Load(object sender, EventArgs e)
+        {
+
+        }
+    }
+}