此Demo是采用VS自帶的Chart圖表控件，制作實時動態顯示的折線圖，和波形圖。
涉及到知識如下：
Chart控件的相關概念：
主要有兩個方法：
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效果圖如下：
折線圖【折線圖，是取[0,100]之間的隨即數進行填充】：
波形圖【波形圖，是取正玄值，並放大50倍，然後上移50】
代碼如下：
1 using System;
2 using System.Collections.Generic;
3 using System.ComponentModel;
4 using System.Data;
5 using System.Drawing;
6 using System.Linq;
7 using System.Text;
8 using System.Windows.Forms;
9 using System.Windows.Forms.DataVisualization.Charting;
10
11 namespace WindowsFormsApplication1
12 {
13 public partial class RealChart : Form
14 {
15 private Queue<double> dataQueue = new Queue<double>(100);
16
17 private int curValue = 0;
18
19 private int num = 5;//每次刪除增加幾個點
20
21 public RealChart()
22 {
23 InitializeComponent();
24 }
25
26 /// <summary>
27 /// 初始化事件
28 /// </summary>
29 /// <param name="sender"></param>
30 /// <param name="e"></param>
31 private void btnInit_Click(object sender, EventArgs e)
32 {
33 InitChart();
34 }
35
36 /// <summary>
37 /// 開始事件
38 /// </summary>
39 /// <param name="sender"></param>
40 /// <param name="e"></param>
41 private void btnStart_Click(object sender, EventArgs e)
42 {
43 this.timer1.Start();
44 }
45
46 /// <summary>
47 /// 停止事件
48 /// </summary>
49 /// <param name="sender"></param>
50 /// <param name="e"></param>
51 private void btnStop_Click(object sender, EventArgs e)
52 {
53 this.timer1.Stop();
54 }
55
56 /// <summary>
57 /// 定時器事件
58 /// </summary>
59 /// <param name="sender"></param>
60 /// <param name="e"></param>
61 private void timer1_Tick(object sender, EventArgs e)
62 {
63 UpdateQueueValue();
64 this.chart1.Series[0].Points.Clear();
65 for(int i=0;i<dataQueue.Count;i++){
66 this.chart1.Series[0].Points.AddXY((i+1), dataQueue.ElementAt(i));
67 }
68 }
69
70 /// <summary>
71 /// 初始化圖表
72 /// </summary>
73 private void InitChart() {
74 //定義圖表區域
75 this.chart1.ChartAreas.Clear();
76 ChartArea chartArea1 = new ChartArea("C1");
77 this.chart1.ChartAreas.Add(chartArea1);
78 //定義存儲和顯示點的容器
79 this.chart1.Series.Clear();
80 Series series1 = new Series("S1");
81 series1.ChartArea = "C1";
82 this.chart1.Series.Add(series1);
83 //設置圖表顯示樣式
84 this.chart1.ChartAreas[0].AxisY.Minimum = 0;
85 this.chart1.ChartAreas[0].AxisY.Maximum =100;
86 this.chart1.ChartAreas[0].AxisX.Interval = 5;
87 this.chart1.ChartAreas[0].AxisX.MajorGrid.LineColor = System.Drawing.Color.Silver;
88 this.chart1.ChartAreas[0].AxisY.MajorGrid.LineColor = System.Drawing.Color.Silver;
89 //設置標題
90 this.chart1.Titles.Clear();
91 this.chart1.Titles.Add("S01");
92 this.chart1.Titles[0].Text = "XXX顯示";
93 this.chart1.Titles[0].ForeColor = Color.RoyalBlue;
94 this.chart1.Titles[0].Font = new System.Drawing.Font("Microsoft Sans Serif", 12F);
95 //設置圖表顯示樣式
96 this.chart1.Series[0].Color = Color.Red;
97 if (rb1.Checked)
98 {
99 this.chart1.Titles[0].Text =string.Format( "XXX {0} 顯示",rb1.Text);
100 this.chart1.Series[0].ChartType = SeriesChartType.Line;
101 }
102 if (rb2.Checked) {
103 this.chart1.Titles[0].Text = string.Format("XXX {0} 顯示", rb2.Text);
104 this.chart1.Series[0].ChartType = SeriesChartType.Spline;
105 }
106 this.chart1.Series[0].Points.Clear();
107 }
108
109 //更新隊列中的值
110 private void UpdateQueueValue() {
111
112 if (dataQueue.Count > 100) {
113 //先出列
114 for (int i = 0; i < num; i++)
115 {
116 dataQueue.Dequeue();
117 }
118 }
119 if (rb1.Checked)
120 {
121 Random r = new Random();
122 for (int i = 0; i < num; i++)
123 {
124 dataQueue.Enqueue(r.Next(0, 100));
125 }
126 }
127 if (rb2.Checked) {
128 for (int i = 0; i < num; i++)
129 {
130 //對curValue只取[0,360]之間的值
131 curValue = curValue % 360;
132 //對得到的正玄值，放大50倍，並上移50
133 dataQueue.Enqueue((50*Math.Sin(curValue*Math.PI / 180))+50);
134 curValue=curValue+10;
135 }
136 }
137 }
138 }
139 }
View Code
