如何对系统中的某个进程进行监控

最近看到一篇文章，就是如何对系统某个进程进行监控，并且当这个进程触发某些事件的时候，能进行相应。而且发现有人问这方面的问题，我就大致在其原有的基础进行如下的修改。

 

首先说明的一点，方法是基于WMI的。以下是我扩展类的代码说明：

//------------------------ProcessInfo Class------------------------------------

//-----------------------------------------------------------------------------

//---File:clsProcessInfo.cs

//---Description:This class demonstrates the use of WMI.

//                It provides a static method to query the list of running processes.

//                And it provides two delegated events binding specific application.

//---Author:Knight

//---Date:Mar.21, 2006

//-----------------------------------------------------------------------------

//----------------------{ ProcessInfo Class }----------------------------------

using System;

using System.Data;

using System.Management;       

using System.Diagnostics;

 

namespace WinProcess

{

    /// <summary>

    /// ProcessInfo class.

    /// </summary>

    public class ProcessInfo

    {

        // defenition of the delegates

        public delegate void StartedEventHandler(object sender, EventArgs e);

        public delegate void TerminatedEventHandler(object sender, EventArgs e);

       

        // events to subscribe

        public StartedEventHandler Started = null;

        public TerminatedEventHandler Terminated = null;

 

        // WMI event watcher

        private ManagementEventWatcher watcher;

 

        /// <summary>

        /// Construction that binds specific application with event declared

        /// </summary>

        /// <param name="LocalServerName"></param>

        /// <param name="appName"></param>

        public ProcessInfo( string appName)

        {

            // querry every 2 seconds

            string pol = "2";

 

            string queryString =

                "SELECT *" +

                "  FROM __InstanceOperationEvent " +

                "WITHIN  " + pol +