Help me make this code identify the correct processid and process name

class FileMonitor
    {
        //The watcher class
        FileSystemWatcher sysWatcher;
        //directory to monitor
        string directoryPath = "C:\\AAAA";
        //An output label and listBox
        Label outputLabel;
        ListBox operationView;
        //process id
        int processId;
        string processNm;

        //Threat details
        List<object> threatDetails;

        //constructor function
        public FileMonitor()
        {
            sysWatcher = new FileSystemWatcher(this.directoryPath);
            sysWatcher.IncludeSubdirectories = true;
            sysWatcher.NotifyFilter = NotifyFilters.Attributes | NotifyFilters.FileName | NotifyFilters.LastWrite;
            //register event handlers
            sysWatcher.Changed += new FileSystemEventHandler(onChanged);
            sysWatcher.Deleted += new FileSystemEventHandler(onChanged);
            sysWatcher.Created += new FileSystemEventHandler(onChanged);
            sysWatcher.Renamed += new RenamedEventHandler(onRenamed);

            sysWatcher.EnableRaisingEvents = true;

        }

        public void setOutputComponents(Label myLable, ListBox myListBox)
        {
            this.outputLabel = myLable;
            this.operationView = myListBox;
        }

        private void onRenamed(object sender, RenamedEventArgs e)
        {

            this.doWork();
        }

        private void onChanged(object sender, FileSystemEventArgs e)
        {
            this.doWork();
        }
        // i believe this has some sort  of bug. Need help here
        private void callProcessChecker()
        {

            ProcessStartInfo sInfo = new ProcessStartInfo(@"C:\handle64.exe");

            sInfo.Arguments = this.directoryPath + " /accepteula";
            sInfo.UseShellExecute = false;
            sInfo.RedirectStandardOutput = true;
            sInfo.CreateNoWindow = true;

            Process pingHandle = Process.Start(sInfo);
            pingHandle.WaitForExit();

            string myOutput = pingHandle.StandardOutput.ReadToEnd();
            string matchPattern = @"(?<=\s+pid:\s+)\b(\d+)\b(?=\s+)";

            foreach (Match match in Regex.Matches(myOutput, matchPattern))
            {
                this.processId = int.Parse(match.Value);
            }
        }
        //a list to contain information about the process
        private void processDetails()
        {
            Process myprocess = Process.GetProcessById(this.processId);
            this.processNm = myprocess.ProcessName;
            this.threatDetails = new List<object>();
            this.threatDetails.Add(this.processNm);
            this.threatDetails.Add(this.processId);
            this.threatDetails.Add(1);
        }
        //display items in a listBox
        private void displayInfoListBox()
        {
            if (this.operationView.InvokeRequired)
            {
                this.operationView.Invoke(new MethodInvoker(
                    () => { this.operationView.Items.Add("Threat:" + this.processNm + "| Pid:" + this.processId + "| Status: "); }
                    ));
            }
            else
            {
                this.operationView.Items.Add("Threat:" + this.processNm + "| Pid:" + this.processId + "| Status: ");
            }
        }

        private void doWork()
        {

            this.callProcessChecker();
            this.processDetails();
            this.displayInfoListBox();
        }

    }