实例介绍
【实例简介】
【实例截图】
【核心代码】
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.Forms.DataVisualization.Charting; namespace Chart1 { public partial class Form1 : Form { public Form1() { InitializeComponent(); } private void Form1_Load(object sender, EventArgs e) { InitChart(); chart1.MouseWheel = new MouseEventHandler(myMouseWheel); } private void InitChart() { DateTime time = DateTime.Now; Series series = chart1.Series[0]; series.ChartType = SeriesChartType.Spline; #region chart1 chart1.Series[0].IsValueShownAsLabel = true;//让点集0在图像上显示数值 chart1.Series[0].SmartLabelStyle.Enabled = true; chart1.Series[0].XValueType = ChartValueType.DateTime;//坐标轴type改为时间 //去掉滚动条的按钮 chart1.ChartAreas[0].AxisX.ScrollBar.ButtonStyle = ScrollBarButtonStyles.None; chart1.ChartAreas[0].AxisX.ScrollBar.IsPositionedInside = false; chart1.ChartAreas[0].AxisX.ScrollBar.Size = 20; chart1.ChartAreas[0].AxisX.ScaleView.MinSizeType = DateTimeIntervalType.Seconds; chart1.ChartAreas[0].AxisX.ScaleView.SizeType = DateTimeIntervalType.Seconds; chart1.ChartAreas[0].AxisX.ScaleView.Size = 20; chart1.ChartAreas[0].AxisX.ScaleView.MinSize = 15; chart1.ChartAreas[0].AxisX.ScaleView.SmallScrollMinSize = 1; chart1.ChartAreas[0].AxisX.ScaleView.SmallScrollMinSizeType = DateTimeIntervalType.Seconds; chart1.ChartAreas[0].AxisX.IntervalType = DateTimeIntervalType.Seconds; //这个interval可以用来修改显示间隔 chart1.ChartAreas[0].AxisX.Interval = DateTime.Parse("00:00:01").Second; chart1.ChartAreas[0].AxisX.TitleAlignment = StringAlignment.Near; chart1.ChartAreas[0].AxisX.MajorGrid.Enabled = true; chart1.ChartAreas[0].AxisX.MajorGrid.LineWidth = 1; chart1.ChartAreas[0].AxisX.MajorGrid.LineColor = Color.LightGray; //显示格式为时:分:秒 chart1.ChartAreas[0].AxisX.LabelStyle.Format = "HH:mm:ss"; chart1.ChartAreas[0].AxisY.IntervalAutoMode = IntervalAutoMode.VariableCount; chart1.ChartAreas[0].AxisY.MajorGrid.LineColor = Color.LightGray; #endregion timer1.Enabled = true; timer1.Interval = 1000; timer1.Start(); //DateTime time = DateTime.Now; //Series series = chart1.Series[0]; //series.ChartType = SeriesChartType.Spline; //chart1.ChartAreas[0].AxisX.LabelStyle.Format = "HH:mm:ss"; //chart1.ChartAreas[0].AxisY.Interval = 5; //chart1.ChartAreas[0].AxisX.ScrollBar.IsPositionedInside = true; //chart1.ChartAreas[0].AxisX.ScrollBar.Enabled = true; //chart1.ChartAreas[0].AxisY.MajorGrid.Enabled = true; //chart1.ChartAreas[0].AxisX.MajorGrid.Enabled = true; //chart1.ChartAreas[0].CursorX.IsUserEnabled = true; //chart1.ChartAreas[0].CursorX.IsUserSelectionEnabled = true; //chart1.ChartAreas[0].CursorX.Interval = 0; //chart1.ChartAreas[0].CursorX.IntervalOffset = 0; //chart1.ChartAreas[0].CursorX.IntervalType = DateTimeIntervalType.Minutes; //chart1.ChartAreas[0].AxisX.ScaleView.Zoomable = true; //chart1.ChartAreas[0].AxisX.ScrollBar.IsPositionedInside = false; //timer1.Enabled = true; //timer1.Interval = 1000; //timer1.Start(); } private void timer1_Tick(object sender, EventArgs e) { this.chart1.ChartAreas[0].AxisX.ScaleView.Scroll(ScrollType.Last); string now = DateTime.Now.ToLongTimeString(); DateTime time = DateTime.Parse(now); this.chart1.Series[0].Points.AddXY(time, DateTime.Now.Second); Random ra = new Random(); Series series = chart1.Series[0]; series.Points.AddXY(DateTime.Now, ra.Next(1, 100)); } private int IntervalNow = 0; private string[] deltas = new string[] {"00:00:01", "00:00:10", "00:00:30", "00:01:00", "00:05:00", "00:10:00", "00:30:00", "00:45:00", "01:00:00"}; public DateTime X_minValue { get; private set; } void myMouseWheel(object sender, MouseEventArgs e) { if (e.Delta > 0) {//放大 if (((Chart)(sender)).ChartAreas[0].AxisX.ScaleView.Size >= 0.5) ((Chart)(sender)).ChartAreas[0].AxisX.ScaleView.Size = ((Chart)(sender)).ChartAreas[0].AxisX.ScaleView.Size * 0.5; if (Convert.ToInt32(((Chart)(sender)).ChartAreas[0].AxisX.ScaleView.Size) >= 20) { --IntervalNow; if (IntervalNow < 0) IntervalNow = 0; ((Chart)(sender)).ChartAreas[0].AxisX.Interval = DateTime.Parse(deltas[IntervalNow]).Second; } else { IntervalNow = 0; ((Chart)(sender)).ChartAreas[0].AxisX.Interval = DateTime.Parse(deltas[IntervalNow]).Second; } } else { if (((Chart)(sender)).ChartAreas[0].AxisX.ScaleView.Size <= 100000) ((Chart)(sender)).ChartAreas[0].AxisX.ScaleView.Size = ((Chart)(sender)).ChartAreas[0].AxisX.ScaleView.Size * 2; if (((Chart)(sender)).ChartAreas[0].AxisX.ScaleView.Size >= 20) { IntervalNow; if (IntervalNow >= 9) IntervalNow = 8; ((Chart)(sender)).ChartAreas[0].AxisX.Interval = DateTime.Parse(deltas[IntervalNow]).Second; } else { IntervalNow = 0; ((Chart)(sender)).ChartAreas[0].AxisX.Interval = DateTime.Parse(deltas[IntervalNow]).Second; } } } } }
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