C#实现启动，关闭与查找进程的方法

using System;using System.Diagnostics;using System.Windows.Forms;namespace ProcessDemo{  public partial class Form1 : Form  {    public Form1()    {      InitializeComponent();    }    private void Form1_Load(object sender, EventArgs e)    {      this.linkLabel1.Links.Add(0, linkLabel1.Text.Length, "//www.VeVB.COm/");    }    private void linkLabel1_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e)    {      this.linkLabel1.Links[linkLabel1.Links.IndexOf(e.Link)].Visited = true;      string target = e.Link.LinkData as string;      if (target != null && target.StartsWith("http://"))      {        Process.Start(target);      }    }    /// <summary>    /// 列出所有可访问进程    /// </summary>    /// <param name="sender"></param>    /// <param name="e"></param>    private void btnList_Click(object sender, EventArgs e)    {      Process[] processes;      processes = Process.GetProcesses();      string str = "";      foreach (Process p in processes)      {        try        {          str = p.ProcessName;          this.lst1.Items.Add("名称：" + p.ProcessName + "，启动时间：" + p.StartTime.ToShortTimeString() + "，进程ID：" + p.Id.ToString() );        }        catch (Exception ex)        {          this.lst1.Items.Add(ex.Message.ToString());//某些系统进程禁止访问，所以要加异常处理        }      }    }    private void btnFind_Click(object sender, EventArgs e)    {      txtFind.Text = txtFind.Text.Trim().ToLower();      if (txtFind.Text.Length > 0)       {        Process[] arrP = Process.GetProcesses();        foreach (Process p in arrP)        {          try          {            if (p.ProcessName.ToLower() == txtFind.Text)            {              MessageBox.Show(txtFind.Text + " 找到了，PID为 " + p.Id.ToString());              return;            }          }          catch { }        }        MessageBox.Show("未找到该进程，请检查输入!");      }    }    private void btnKill_Click(object sender, EventArgs e)    {      txtFind.Text = txtFind.Text.Trim().ToLower();      int pid = -1;      if (txtFind.Text.Length > 0)      {        Process[] arrP = Process.GetProcesses();        foreach (Process p in arrP)        {          try          {            if (p.ProcessName.ToLower() == txtFind.Text)            {              pid = p.Id;              break;            }          }          catch { }        }        if (pid != -1)        {          RunCmd("ntsd -c q -p " + pid);        }      }    }    /// <summary>    /// 运行DOS命令    /// DOS关闭进程命令(ntsd -c q -p PID )PID为进程的ID    /// </summary>    /// <param name="command"></param>    /// <returns></returns>    public string RunCmd(string command)    {      Process p = new Process();      p.StartInfo.FileName = "cmd.exe";      p.StartInfo.Arguments = "/c " + command;      p.StartInfo.UseShellExecute = false;      p.StartInfo.RedirectStandardInput = true;      p.StartInfo.RedirectStandardOutput = true;      p.StartInfo.RedirectStandardError = true;      p.StartInfo.CreateNoWindow = true;      p.Start();      return p.StandardOutput.ReadToEnd();    }  }}