search son or parent process

参考：http://stackoverflow.com/questions/2531837/how-can-i-get-the-pid-of-the-parent-process-of-my-application

Process searchSonProcess(int processId)

{
var myId = processId;
var query = string.Format("SELECT ProcessId FROM Win32_Process WHERE ParentProcessId = {0}", myId);
var search = new ManagementObjectSearcher("root\\CIMV2", query);
var results = search.Get().GetEnumerator();
if (!results.MoveNext()) throw new Exception("Huh?");
var queryObj = results.Current;
uint sonId = (uint)queryObj["ProcessId"];
var sonProcess = Process.GetProcessById((int)sonId);


return sonProcess;

}

Process searchParentProcess(int processId)
{
var myId = processId;
var query = string.Format("SELECTParentProcessIdFROM Win32_Process WHEREProcessId= {0}", myId);
var search = new ManagementObjectSearcher("root\\CIMV2", query);
var results = search.Get().GetEnumerator();
if (!results.MoveNext()) throw new Exception("Huh?");
var queryObj = results.Current;
uintparentId= (uint)queryObj["ParentProcessId"];

var parent = Process.GetProcessById((int)parentId);

returnparent;
}