C# chart控件实时动态显示数据

这里介绍了一个最简单的实时显示数据的完整示例，

本文参考了 使用MSChart实时动态显示折线图 ，谢谢原作者的分享。

平台：VS2013，C#windows程序。

源代码下载：http://download.csdn.net/detail/lj22377/7713939

1、首先，将chart控件添加到窗口。

2、设置chart - series 主要t属性：

2.1 IsXValueIndexed = true;

2.2 XValueType = Time;

3、编写初始化函数：

private void InitChart()
{
DateTime time = DateTime.Now;
chartTimer.Interval = 1000;
chartTimer.Tick += chartTimer_Tick;
chartDemo.DoubleClick += chartDemo_DoubleClick;

Series series = chartDemo.Series[0];
series.ChartType = SeriesChartType.Spline;

chartDemo.ChartAreas[0].AxisX.LabelStyle.Format = "HH:mm:ss";
chartDemo.ChartAreas[0].AxisX.ScaleView.Size = 5;
chartDemo.ChartAreas[0].AxisX.ScrollBar.IsPositionedInside = true;
chartDemo.ChartAreas[0].AxisX.ScrollBar.Enabled = true;

chartTimer.Start();

}

4、编写timer事件：

void chartTimer_Tick(object sender, EventArgs e)
{
Random ra = new Random();
Series series = chartDemo.Series[0];
series.Points.AddXY(DateTime.Now, ra.Next(1, 10));
chartDemo.ChartAreas[0].AxisX.ScaleView.Position = series.Points.Count - 5;
//throw new NotImplementedException();
}

5、编写chart双击事件。（因为滑动条可以隐藏，隐藏之后不知道怎么恢复，所以就编写了这个双击事件，以恢复滑动条）

void chartDemo_DoubleClick(object sender, EventArgs e)
{
chartDemo.ChartAreas[0].AxisX.ScaleView.Size = 5;
chartDemo.ChartAreas[0].AxisX.ScrollBar.IsPositionedInside = true;
chartDemo.ChartAreas[0].AxisX.ScrollBar.Enabled = true;
//throw new NotImplementedException();
}

6、完整代码如下：

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; //需要添加的命名空间

namespace ChartRealTimeShow
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
InitChart();
}

System.Windows.Forms.Timer chartTimer = new System.Windows.Forms.Timer();

private void InitChart()
{
DateTime time = DateTime.Now;
chartTimer.Interval = 1000;
chartTimer.Tick += chartTimer_Tick;
chartDemo.DoubleClick += chartDemo_DoubleClick;

Series series = chartDemo.Series[0];
series.ChartType = SeriesChartType.Spline;

chartDemo.ChartAreas[0].AxisX.LabelStyle.Format = "HH:mm:ss";
chartDemo.ChartAreas[0].AxisX.ScaleView.Size = 5;
chartDemo.ChartAreas[0].AxisX.ScrollBar.IsPositionedInside = true;
chartDemo.ChartAreas[0].AxisX.ScrollBar.Enabled = true;

chartTimer.Start();

}

void chartDemo_DoubleClick(object sender, EventArgs e)
{
chartDemo.ChartAreas[0].AxisX.ScaleView.Size = 5;
chartDemo.ChartAreas[0].AxisX.ScrollBar.IsPositionedInside = true;
chartDemo.ChartAreas[0].AxisX.ScrollBar.Enabled = true;
//throw new NotImplementedException();
}

void chartTimer_Tick(object sender, EventArgs e)
{
Random ra = new Random();
Series series = chartDemo.Series[0];
series.Points.AddXY(DateTime.Now, ra.Next(1, 10));
chartDemo.ChartAreas[0].AxisX.ScaleView.Position = series.Points.Count - 5;
//throw new NotImplementedException();
}

}
}