.net 由进程id获取用户名

 private static string GetProcessUserName(int pID)
        {
            string text1 = null;

            SelectQuery query1 = new SelectQuery("Select * from Win32_Process WHERE processID=" pID);
            ManagementObjectSearcher searcher1 = new ManagementObjectSearcher(query1);

            try
            {
                foreach (ManagementObject disk in searcher1.Get())
                {
                    ManagementBaseObject inPar = null;
                    ManagementBaseObject outPar = null;

                    inPar = disk.GetMethodParameters("GetOwner");

                    outPar = disk.InvokeMethod("GetOwner", inPar, null);

                    text1 = outPar["User"].ToString();
                    break;
                }
            }
            catch
            {
                text1 = "SYSTEM";
            }

            return text1;
        }