c# - Process.Kill() doesn't seem to kill the process -

i having trouble using process.kill(). think must misunderstanding how works. test function. start long-running process (ping -t) , kill 5 seconds later.

i can see ping process show up, process still there after program finishes. have kill manually.

console.writeline("total number of ping processes {0}", process.getprocessesbyname("ping").length);  processstartinfo startinfo = new processstartinfo("cmd.exe"); process process = new process();  startinfo.createnowindow = true; startinfo.useshellexecute = false; startinfo.arguments = "/c ping -t 8.8.8.8";  console.writeline("staring ping process"); process.startinfo = startinfo; process.start(); thread.sleep(5000);  console.writeline("total number of ping processes {0}", process.getprocessesbyname("ping").length); thread.sleep(5000);  console.writeline("killing ping process"); process.kill(); thread.sleep(5000);  console.writeline("total number of ping processes {0}", process.getprocessesbyname("ping").length); 

what doing wrong here?

you started cmd.exe, cmd.exe starts child process ping.exe. kill ping.exe can kill process hierarchy. example wmi(add system.management reference):

private static void killprocessandchildrens(int pid) {     managementobjectsearcher processsearcher = new managementobjectsearcher       ("select * win32_process parentprocessid=" + pid);     managementobjectcollection processcollection = processsearcher.get();      try     {         process proc = process.getprocessbyid(pid);         if (!proc.hasexited) proc.kill();     }     catch (argumentexception)     {         // process exited.     }      if (processcollection != null)     {         foreach (managementobject mo in processcollection)         {             killprocessandchildrens(convert.toint32(mo["processid"])); //kill child processes(also kills childrens of childrens etc.)         }     } }