Still celebrating National IT Professionals Day with 3 months of free Premium Membership. Use Code ITDAY17

x
?
Solved

How to kill a spawned process?

Posted on 2008-06-15
3
Medium Priority
?
1,679 Views
Last Modified: 2010-04-21
Hi,

I'm running an external server using System.Diagnostics.Process, the problem
is that this server spawns another process.
So far I am only able to close/kill the first process but not the spawned one.
Is there some way to track all spawned processes and kill them on demand?

I can not kill it by name alone, since this is a common thread name, which could
mean that I kill some other apps process.

Thanks!
0
Comment
Question by:oxyoo
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
3 Comments
 
LVL 10

Author Comment

by:oxyoo
ID: 21790774
I think I have what is needed now, after a lot of research. The code
is pretty ugly but so far does the job.

Can anyone find any flaws with it?

What the code does is that iterates through all the processes and
finds the parentId, then compares it with my runningServer process
to see if it is the parent. If yes, it kills it.

                int parentId = runningServer.Id;
 
                foreach (Process process in Process.GetProcesses()) {
                    PerformanceCounter myParentMultiProcID = new PerformanceCounter("Process", "ID Process",
                                                                                    process.ProcessName);
 
                    try {
                        float tmpParentPID = myParentMultiProcID.NextValue();
 
                        if (tmpParentPID == parentId) {
                            process.Kill();
                            process.Dispose();
                        }
                    }
                    catch (InvalidOperationException) {}
                }
 
 
                // NOT NEEDED?
                try {
                    runningServer.Kill();
                    runningServer.Dispose();
                    runningServer = null;
                }
                catch (InvalidOperationException) {}

Open in new window

0
 
LVL 1

Accepted Solution

by:
gregmulvihill earned 2000 total points
ID: 21791840
I adapted a solution (http://blogs.msdn.com/bclteam/archive/2006/06/20/640259.aspx) presented by Robert Villahermosa to deal with multiple process instances of the same name.  Pass in the process ID of the server you started with System.Diagnostics.Process, and FindChildProcessIDs should return an array with all the spawned process IDs.  Then you can iterate through the list and kill the processes.

Example:

int[] oChildProcessIDs = FindChildProcessIDs(nServiceProcessID);

foreach (int nProcessID in oChildProcessIDs)
{
      Process oProcess = Process.GetProcessById(nProcessID);
      oProcess.Kill();
      oProcess.Dispose();
}




		public static int[] FindChildProcessIDs(int nParentProcessID)
		{
			List<int> oChildProcessIDs = new List<int>();
 
			foreach (Process oProcess in Process.GetProcesses())
			{
				Process oParentProcess = FindParentProcess(oProcess);
 
				if ((null != oParentProcess) && (nParentProcessID == oParentProcess.Id))
				{
					oChildProcessIDs.Add(oProcess.Id);
				}
			}
 
			return oChildProcessIDs.ToArray();
		}
 
		
		public static Process FindParentProcess(Process oTargetChildProcess)
		{
			Process oParentProcess = null;
 
			Process[] oChildProcessList = Process.GetProcessesByName(oTargetChildProcess.ProcessName);
 
			for (int nIndex = 0; nIndex < oChildProcessList.Length; nIndex++)
			{
				string sChildProcessName = oTargetChildProcess.ProcessName;
 
				if (nIndex != 0) sChildProcessName += "#" + nIndex;
 
				PerformanceCounter oChildProcessID = new PerformanceCounter("Process", "ID Process", sChildProcessName);
				PerformanceCounter oParentProcessID = new PerformanceCounter("Process", "Creating Process ID", sChildProcessName);
 
				int nChildProcessID = (int)oChildProcessID.NextValue();
				int nParentProcessID = (int)oParentProcessID.NextValue();
 
				oChildProcessID.Dispose();
				oParentProcessID.Dispose();
 
				if (oTargetChildProcess.Id == nChildProcessID)
				{
					try
					{
						oParentProcess = Process.GetProcessById(nParentProcessID);
 
						break;
					}
					catch { }
				}
			}
 
			return oParentProcess;
		}

Open in new window

0
 
LVL 10

Author Closing Comment

by:oxyoo
ID: 31467371
Thanks, an excellent solution!
0

Featured Post

Concerto Cloud for Software Providers & ISVs

Can Concerto Cloud Services help you focus on evolving your application offerings, while delivering the best cloud experience to your customers? From DevOps to revenue models and customer support, the answer is yes!

Learn how Concerto can help you.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Extention Methods in C# 3.0 by Ivo Stoykov C# 3.0 offers extension methods. They allow extending existing classes without changing the class's source code or relying on inheritance. These are static methods invoked as instance method. This…
Entity Framework is a powerful tool to help you interact with the DataBase but still doesn't help much when we have a Stored Procedure that returns more than one resultset. The solution takes some of out-of-the-box thinking; read on!
Sometimes it takes a new vantage point, apart from our everyday security practices, to truly see our Active Directory (AD) vulnerabilities. We get used to implementing the same techniques and checking the same areas for a breach. This pattern can re…
Have you created a query with information for a calendar? ... and then, abra-cadabra, the calendar is done?! I am going to show you how to make that happen. Visualize your data!  ... really see it To use the code to create a calendar from a q…

715 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question