C# 利用性能计数器监控网络状态

  1 using System;
  2  System.Collections.Generic;
  3  System.ComponentModel;
  4  System.Data;
  5  System.Drawing;
  6  System.Linq;
  7  System.Text;
  8  System.Windows.Forms;
  9  System.Windows.Forms.DataVisualization.Charting;
 10  System.Diagnostics;
 11 
 12 namespace DemoSharp
 13 {
 14     public partial class NetworkMonitor : Form
 15     {
 16         private PerformanceCounter mCounter;//当前计数器
 17 
 18         private Queue<double> dataQueue = new Queue<double>(100);初始化队列
 19 
 20         public NetworkMonitor()
 21         {
 22             InitializeComponent();
 23             InitCounterCategory();
 24             InitChart();
 25         }
 26 
 27         /// <summary>
 28         /// 初始化计数器信息
 29         </summary>
 30         private void InitCounterCategory() {
 31             获取所有的计数器类别
 32             var counterCategories = PerformanceCounterCategory.GetCategories().OrderBy(p=>p.CategoryName);
 33             int i=0;
 34             foreach (var counterCategory in counterCategories) {
 35                 属于线程级别的不显示
 36                 if (counterCategory.CategoryName == "Thread") {
 37                     continue 38                 }
 39                 将信息绑定的TreeView上
 40                 this.tvCategory.CheckBoxes = true 41                 this.tvCategory.Nodes.Add(counterCategory.CategoryName);
 42                 string[] instanceNames = counterCategory.GetInstanceNames();
 43                 int j =  44                 var instanceName  instanceNames) {
 45                     .tvCategory.Nodes[i].Nodes.Add(instanceName);
 46                     var counters = counterCategory.GetCounters(instanceName).Select(p=>string.Format({0},p.CounterName));
 47                     int k =  48                     var counter  counters) {
 49                         .tvCategory.Nodes[i].Nodes[j].Nodes.Add(counter);
 50                         k++ 51                     }
 52                     j++ 53  54                 i++ 55             }
 56             初始化Counter
 57             PerformanceCounterCategory pcCategory = new PerformanceCounterCategory(Network Interface);
 58             string[] iNames = pcCategory.GetInstanceNames();
 59             PerformanceCounter[] pCounters = pcCategory.GetCounters(iNames[]);
 60             给网络监控计数器赋值
 61             mCounter = pCounters[];
 62             mCounter.NextValue();初始值
 63  64 
 65          <summary>
 66          初始化图表
 67           68          InitChart()
 69  70             定义图表区域
 71             .chart1.ChartAreas.Clear();
 72             ChartArea chartArea1 = new ChartArea(C1 73             .chart1.ChartAreas.Add(chartArea1);
 74             定义存储和显示点的容器
 75             .chart1.Series.Clear();
 76             Series series1 = new Series(S1 77             series1.ChartArea =  78             .chart1.Series.Add(series1);
 79             设置图表显示样式
 80             this.chart1.ChartAreas[0].AxisY.ArrowStyle = AxisArrowStyle.SharpTriangle;
 81             0].AxisY.Title = Kkbps";坐标轴的标题
 82             0].AxisY.TextOrientation = TextOrientation.Rotated270;
 83             0].AxisY.Minimum =  84             0].AxisY.Maximum = 50 85             0].AxisY.Interval = 5 86             0].AxisX.Interval =  87             0].AxisX.ArrowStyle = 88             0].AxisX.Title = Sec 89             0].AxisX.TextOrientation = TextOrientation.Horizontal;
 90             0].AxisX.MajorGrid.LineColor = System.Drawing.Color.Silver;
 91             0].AxisY.MajorGrid.LineColor = 92             设置标题
 93             .chart1.Titles.Clear();
 94             this.chart1.Titles.Add(S01 95             this.chart1.Titles[0].Text = XXX网络监控显示 96             0].ForeColor = Color.RoyalBlue;
 97             0].Font = new System.Drawing.Font(Microsoft Sans Serif 98              99             this.chart1.Series[0].Color = Color.LightGreen;
100             0].ChartType = SeriesChartType.Area;图表形状
101             ].Points.Clear();
102 103 
104         105          启动定时器
106         107         <param name="sender"></param>
108         <param name="e"></param>
109         void btnStart_Click(object sender,EventArgs e)
110 111             .timer1.Start();
112             
113 114 
115         116          停止定时器
117         118         119         120         void btnStop_Click(121 122             .timer1.Stop();
123 124 
125         126          定时执行函数
127         128         129         130         void timer1_Tick(131 132             UpdateQueueValue();
133             134             if (dataQueue.Max() > ].AxisY.Maximum) {
135                 0].AxisY.Maximum = Math.Ceiling(dataQueue.Max() / 10) * 10136                 0].AxisY.Interval = 0].AxisY.Maximum / 137 138             for (int i = 0; i < dataQueue.Count; i++)
139             {
140                 0].Points.AddXY((i + 1),dataQueue.ElementAt(i));
141 142 143 
144          更新队列中的值
145          UpdateQueueValue()
146 147 
148             if (dataQueue.Count > 100149 150                 dataQueue.Dequeue();
151 152             获取的值就Byte/s 所以要除以1024
153             dataQueue.Enqueue(mCounter.NextValue() / (1024));
154 
155 156 
157         158          当选中复选框时发生
159         160         161         162         void tvCategory_AfterCheck(163 164             bool flag = e.Node.Checked;取得选中状态，所有子节点的状态保持一致
165             CheckedStated(e.Node.Nodes,flag);
166 167 
168         169          采用递归方法修改节点的选中状态
170         171         <param name="nodes"></param>
172         <param name="flag"></param>
173         void CheckedStated(TreeNodeCollection nodes,bool flag) {
174             
175             if (nodes != null176 177                 foreach (TreeNode node  nodes)
178                 {
179                     node.Checked = flag;
180                     CheckedStated(node.Nodes,1)">181 182 183 184     }
185 }