等待远程进程在 .net 中完成答案

【问题标题】：Wait for a remote process to finish in .net等待远程进程在 .net 中完成
【发布时间】：2011-09-28 07:50:53
【问题描述】：

我们都知道并喜欢 Process.WaitForExit()。

给定远程机器上进程的 pid（由 WMI/psexec 创建），我如何等待它结束？

【问题讨论】：

【解决方案1】：

对我来说 Process.GetProcessByID() 只是没有工作（它声称它无法连接到机器）。这有效：

public static bool WaitForProcess(int pid, string machine, TimeSpan timeout)
{
  // busy wait
  DateTime start = DateTime.Now;
  while (IsAlive(pid, machine))
  {
    if (start.Add(timeout).CompareTo(DateTime.Now) <= 0)
      return false;

    Thread.Sleep(1000);
  }
  return true;
}

public static bool IsAlive(int pid, string machine)
{
  // doesn't work for me (throws "The network path was not found" exception)
  //return Process.GetProcessById(pid, @"\\" + machine) != null;
  string user;
  string domain;
  GetProcessInfoByPID(pid, machine, out user, out domain);
  return !string.IsNullOrEmpty(user);
}

public static string GetProcessInfoByPID(int PID, string machine, out string User, out string Domain)
{
  // copied from http://www.codeproject.com/KB/cs/processownersid.aspx?fid=323674&df=90&mpp=25&noise=3&sort=Position&view=Quick&select=2076667
  // with slight modifications
  ConnectionOptions connOptions = new ConnectionOptions();
  connOptions.Impersonation = ImpersonationLevel.Impersonate;
  connOptions.EnablePrivileges = true;
  ManagementScope manScope = new ManagementScope(String.Format(@"\\{0}\ROOT\CIMV2", machine), connOptions);
  manScope.Connect();

  User = String.Empty;
  Domain = String.Empty;
  string OwnerSID = String.Empty;
  string processname = String.Empty;
  try
  {
    ObjectQuery sq = new ObjectQuery
      ("Select * from Win32_Process Where ProcessID = '" + PID + "'");
    ManagementObjectSearcher searcher = new ManagementObjectSearcher(manScope, sq);
    if (searcher.Get().Count == 0)
      return OwnerSID;
    foreach (ManagementObject oReturn in searcher.Get())
    {
      string[] o = new String[2];
      //Invoke the method and populate the o var with the user name and domain
      oReturn.InvokeMethod("GetOwner", o);

      //int pid = (int)oReturn["ProcessID"];
      processname = (string)oReturn["Name"];
      //dr[2] = oReturn["Description"];
      User = o[0];
      if (User == null)
        User = String.Empty;
      Domain = o[1];
      if (Domain == null)
        Domain = String.Empty;
      string[] sid = new String[1];
      oReturn.InvokeMethod("GetOwnerSid", sid);
      OwnerSID = sid[0];
      return OwnerSID;
    }
  }
  catch
  {
    return OwnerSID;
  }
  return OwnerSID;
}

【讨论】：

【解决方案2】：

Process.GetProcessById(processId, machineName).WaitForExit();

【讨论】：

不确定这怎么会是正确的答案。根据 doco msdn.microsoft.com/en-us/library/fb4aw7b8.aspx，当“您尝试为在远程计算机上运行的进程调用 WaitForExit() 时，将引发 SystemException。此方法仅适用于在本地计算机上运行的进程。”

【解决方案3】：

使用 SysInternals 的 PSLIST 轮询远程计算机。

【讨论】：