Solved

Get Process ID from MainWindowHandle

Posted on 2009-05-08
2
1,128 Views
Last Modified: 2013-11-08
I am attempting to kill a process by using the processID.  I can seem to do this by the process name, but I need to be able to do this by the actual processID since I will have multiples running with the same name I can not kill.  For some reason they are all returning a processID = 0, even when I set the window to visible.  If I debug and look at all the processes collected in the getprocesses() method and take a look at the processes that have open windows (i.e. notepad) they have zero as mainwindowhandle.
private Int32 GetCurrentExcelProcessID()
        {
 
            Process[] aProcesses = Process.GetProcesses();
 
            Int32 processID = 0;
 
            bool originalVisibility = commXl.Visible;
 
            commXl.Visible = true;
 
 
 
            for (int i = 0; i <= aProcesses.GetUpperBound(0); i++)
 
            {
 
                if (aProcesses[i].MainWindowHandle.ToString() == commXl.Hwnd.ToString())
 
                {
 
                    processID = aProcesses[i].Id;
 
                    break;
 
                }
 
            }
 
            commXl.Visible = originalVisibility;
 
            return processID;
 
        }
 
 
 
        private void KillCurrentExcelProcess()
 
        {
 
            Process[] aProcesses = Process.GetProcesses();
 
            Process aProcess = null;
 
 
 
            for (int i = 0; i <= aProcesses.GetUpperBound(0); i++)
 
            {
 
                if (aProcesses[i].Id.ToString() == currProcID.ToString())
 
                {
 
                    aProcess = aProcesses[i];
 
                    break;
 
                }
 
            }
 
 
 
            try
 
            {
 
                if (aProcess != null)
 
                {
 
                    aProcess.Kill();
 
                }
 
            }
            catch { }
        }
    }

Open in new window

0
Comment
Question by:dtadin
2 Comments
 
LVL 19

Expert Comment

by:elimesika
ID: 24345663
HI

This is a known problem
Try to use WIN32 API GetMainProcessWindow(<processId>) instead of aProcesses[i].MainWindowHandle
0
 
LVL 4

Accepted Solution

by:
TMarkham1 earned 250 total points
ID: 24704397
elimeskika:

I looked through the Windows API Reference on MSDN, and I don't see a function named GetMainProcessWindow in the entire API (unless I am looking in the wrong place).

I've seen this "GetMainProcessWindow" functionality offered up as a solution a few times in web searches I've done, but none of them went beyond a basic suggestion of "Try the WIN32 API GetMainProcessWindow instead of MainWindowHandle".

Have you personally implemented your suggestion in the past using the .Net Framework? If so, how about a code example?
0

Featured Post

Free Tool: Subnet Calculator

The subnet calculator helps you design networks by taking an IP address and network mask and returning information such as network, broadcast address, and host range.

One of a set of tools we're offering as a way of saying thank you for being a part of the community.

Question has a verified solution.

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

Today I had a very interesting conundrum that had to get solved quickly. Needless to say, it wasn't resolved quickly because when we needed it we were very rushed, but as soon as the conference call was over and I took a step back I saw the correct …
The article shows the basic steps of integrating an HTML theme template into an ASP.NET MVC project
Nobody understands Phishing better than an anti-spam company. That’s why we are providing Phishing Awareness Training to our customers. According to a report by Verizon, only 3% of targeted users report malicious emails to management. With compan…

856 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