Check if program stop running

Question

Hi All,

To test wether that program "second.exe" are stop running using this code below.It seem not working.

Thank.

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Management;
using System.Diagnostics;
using System.Threading;
using System.IO;

namespace mag_3
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();

            ManagementEventWatcher stopWatch = new ManagementEventWatcher(new WqlEventQuery("SELECT * FROM Win32_ProcessStartTrace"));

            try
            {
                stopWatch.EventArrived += new EventArrivedEventHandler(this.Bulk_);
                stopWatch.Start();

            }

            catch (Exception)
            {
                MessageBox.Show("Can't start the Process-Monitor! Are you running as admin?");
                return;
            }

        }

        private void Bulk_(object sender, EventArrivedEventArgs e)
        {
            listBox1.Items.Add("Process stop: {0}" + e.NewEvent.Properties["Second.exe"].Value);
        }


    }
}

Answer 1

If you need to check whether an application is closed, then we should use Win32_ProcessStopTrace instead of Win32_ProcessStartTrace.

Moreover, the result object we get has no attribute named Second.exe, we should use ProcessName instead.

Finally, cross-thread modification of the listbox is not allowed, we need to use Invoke.

 public Form1()  
        {  
            InitializeComponent();  
        }  
  
        private void Bulk_(object sender, EventArrivedEventArgs e)  
        {  
            Invoke(new MethodInvoker(() =>  
            {  
                listBox1.Items.Add(string.Format("Process stop: {0}",e.NewEvent.Properties["ProcessName"].Value));  
            }));  
        }  
  
        private void Form1_Load(object sender, EventArgs e)  
        {  
            ManagementEventWatcher stopWatch = new ManagementEventWatcher(new WqlEventQuery("SELECT * FROM Win32_ProcessStopTrace"));  
  
            try  
            {  
                stopWatch.EventArrived += new EventArrivedEventHandler(this.Bulk_);  
                stopWatch.Start();  
            }  
  
            catch (Exception)  
            {  
                MessageBox.Show("Can't start the Process-Monitor! Are you running as admin?");  
                return;  
            }  
        }  

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