针对网站上的这篇文章“C#绘制实时曲线图的方法详解”,以下是完整的攻略:
1. 了解实时曲线图的作用和实现原理
实时曲线图主要是用于显示一些随时间变化的数据,并实时更新数据,常见的使用场景是嵌入式监控、数据采集和控制等。关于实时曲线图的实现原理,一般使用的是C#中的Graphics技术。
2. 准备工作
引入namespace:
using System.Drawing;
using System.Windows.Forms;
声明变量:
private Graphics graph;
private Bitmap bmp;
初始化:
bmp = new Bitmap(pictureBox.Width, pictureBox.Height);
graph = Graphics.FromImage(bmp);
pictureBox.Image = bmp;
3. 绘制曲线图
绘制曲线图的方法有多种,本文重点讲解以下三种:
3.1 Graphics类绘制实时曲线图
public void DrawLine(){
SolidBrush brush = new SolidBrush(Color.Red);
Pen pen = new Pen(brush, 1);
graph.DrawLine(pen, x, y, x+1, y+1);
x++;
y++;
pictureBox.Invalidate();
}
3.2 Chart控件绘制实时曲线图
public void ChartLine(){
chart1.Series.Clear();
Series series = new Series();
series.ChartType = SeriesChartType.Line;
chart1.Series.Add(series);
chart1.ChartAreas[0].AxisY.Minimum = 0;
chart1.ChartAreas[0].AxisY.Maximum = 100;
series.Points.AddXY(x, y);
x++;
y++;
}
3.3 ZedGraph控件绘制实时曲线图
public void ZedGraphLine(){
GraphPane myPane = zedGraphControl1.GraphPane;
LineItem myCurve = myPane.AddCurve("Sine Wave", list, Color.Blue, SymbolType.None);
zedGraphControl1.AxisChange();
zedGraphControl1.Invalidate();
}
4. 实时更新数据
对于实时更新数据的方法也有多种,本文讲解以下两种方法:
4.1 使用Timer控件
private void timer1_Tick(object sender, EventArgs e)
{
DrawLine();
}
4.2 使用Thread
private void newThread(){
while (true)
{
DrawLine();
Thread.Sleep(10);
}
}
5. 完整代码示例
综上所述,以下是一个完整的示例代码(以Graphics为例):
using System;
using System.Drawing;
using System.Windows.Forms;
namespace RealTimeChart
{
public partial class Form1 : Form
{
private Graphics graph;
private Bitmap bmp;
private int x = 0;
private int y = 0;
public Form1()
{
InitializeComponent();
timer1.Interval = 10;
bmp = new Bitmap(pictureBox.Width, pictureBox.Height);
graph = Graphics.FromImage(bmp);
pictureBox.Image = bmp;
}
private void timer1_Tick(object sender, EventArgs e)
{
DrawLine();
}
public void DrawLine(){
SolidBrush brush = new SolidBrush(Color.Red);
Pen pen = new Pen(brush, 1);
graph.DrawLine(pen, x, y, x+1, y+1);
x++;
y++;
pictureBox.Invalidate();
}
}
}
以上是关于“C#绘制实时曲线图的方法详解”的完整攻略,希望对您有所帮助。
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