简单的创建一个性能计数器

一、性能监控的作用
性能监控可以用于获取关于应用程序的正常行为的一般消息，性能监控是一个强大的工具，有助于理解系统的工作负载，观察变化和趋势，尤其是运行在服务器上的应用程序

二、性能监控类（System.Diagnostics）：
PerformanceCounter类：监控计数与写入计数。还可以使用这个类创建新的性能类别
PerformanceCounterCategory类：可以查看所有的已有的类别，以及创建类别。可以以编程的方式获得一个类别中的所有计数器
performanceCounterInstall类：用于安装性能计数器

需要引用WindowsBase

三、创建性能类别（两种创建方式）：
1，图形化创建：







2，代码创建+操作（可以监控不同应用程序的性能计数）：

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.Threading;
using System.Diagnostics;
namespace PerformanceCountTest2
{
public partial class Form1 : Form
{
//性能计数器的实例名称
private const string _NewPerformanceCounterName = "PerformanceCountTest2";
//性能计数器的类型名称
private const string _PerformanceCounterCategoryName = "MyZhangDi";
//性能计数器名称
private SortedList<string, Tuple<string, string>> _PerformanceCounterNames;
//-----性能计数器（组件）
//记录按钮点击的次数
private PerformanceCounter buttonClickCount;
//记录按钮每秒点击的次数
private PerformanceCounter buttonClickCountSec;
//存放按钮每秒点击的次数的变量
private int Record_buttonClickCount = 0;
//初始化性能计数器名称
private void InitialziePerformanceCounterNames()
{
_PerformanceCounterNames = new SortedList<string, Tuple<string, string>>();
_PerformanceCounterNames.Add("buttonClickCount", Tuple.Create("buttonClickCount", "记录按钮点击的次数"));
_PerformanceCounterNames.Add("buttonClickCountSec", Tuple.Create("buttonClickCountSec", "记录按钮每秒点击的次数"));
}
//初始化性能计数器（组件）
private void InitializePerformanceCounter()
{
buttonClickCount = new PerformanceCounter
{
CategoryName = _PerformanceCounterCategoryName,//性能计数器类型名称
CounterName = _PerformanceCounterNames["buttonClickCount"].Item1,//性能计数器名称
MachineName = ".",//本地计算机
InstanceLifetime = PerformanceCounterInstanceLifetime.Process,//生命周期
ReadOnly = false,//可写
InstanceName = _NewPerformanceCounterName//实例名称
};
buttonClickCountSec = new PerformanceCounter
{
CategoryName = _PerformanceCounterCategoryName,//性能计数器类型名称
CounterName = _PerformanceCounterNames["buttonClickCountSec"].Item1,//性能计数器名称
MachineName = ".",//本地计算机
InstanceLifetime = PerformanceCounterInstanceLifetime.Process,//生命周期
ReadOnly = false,//可写
InstanceName = _NewPerformanceCounterName//实例名称
};
}
//注册性能计数器
private void RegisterPerformanceCounter()
{
//判断此计数器类型名称是否存在
if (!PerformanceCounterCategory.Exists(_PerformanceCounterCategoryName))
{
var CounterCreationDatas = new CounterCreationData[2];
CounterCreationDatas[0] = new CounterCreationData
{
CounterName = _PerformanceCounterNames["buttonClickCount"].Item1,
CounterHelp = _PerformanceCounterNames["buttonClickCount"].Item2,
CounterType = PerformanceCounterType.NumberOfItems32
};
CounterCreationDatas[1] = new CounterCreationData
{
CounterName = _PerformanceCounterNames["buttonClickCountSec"].Item1,
CounterHelp = _PerformanceCounterNames["buttonClickCountSec"].Item2,
CounterType = PerformanceCounterType.RateOfCountsPerSecond32
};
CounterCreationDataCollection counts = new CounterCreationDataCollection(CounterCreationDatas);
//创建类型
PerformanceCounterCategory.Create(_PerformanceCounterCategoryName, "类型描述", PerformanceCounterCategoryType.MultiInstance, counts);
}
}

public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
InitialziePerformanceCounterNames();
InitializePerformanceCounter();
DispatcherTimer timer = new DispatcherTimer(TimeSpan.FromSeconds(1),
DispatcherPriority.Background,
delegate
{
//存放按钮每秒点击的次数的变量 赋值给 每秒点击的次数
buttonClickCountSec.RawValue = this.Record_buttonClickCount;
//初始化值（存放按钮每秒点击的次数的变量）
this.Record_buttonClickCount = 0;
},
Dispatcher.CurrentDispatcher
);
//开启时间计数器
timer.Start();
}
/// <summary>
/// 注册性能计数器
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void button1_Click(object sender, EventArgs e)
{
RegisterPerformanceCounter();
}
/// <summary>
/// 点击测试
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void button2_Click(object sender, EventArgs e)
{
buttonClickCount.Increment();
Record_buttonClickCount++;//用于每秒点击的次数
}
}
}

3，使用性能监视器查看