Having doubts over windows service

lock(this)
{
            bool isOutlookRunning = false;
            Process[] process = null;
            process = Process.GetProcessesByName("OUTLOOK");
            if (process.Length > 0)
                isOutlookRunning = true;
            try
            {
                obj2 = new Microsoft.Office.Interop.Outlook.Application();
            }
            catch
            {
                if (isOutlookRunning)
                {
                    foreach (Process pr in process)
                    {
                        if (pr.ProcessName.Contains("OUTLOOK"))
                        {
                            pr.CloseMainWindow();
                         }
                    }
                }
                else
                Process.Start("OUTLOOK");
                obj2 = new Microsoft.Office.Interop.Outlook.Application();
            }
            ns = obj2.GetNamespace("MAPI");
            inboxFolder = ns.GetDefaultFolder(Microsoft.Office.Interop.Outlook.OlDefaultFolders.olFolderInbox);
            outboxFolder = ns.GetDefaultFolder(Outlook.OlDefaultFolders.olFolderOutbox);
            process = null;
}