C#

foreach (PkgID in PkgIDs)
            {
                Process eProcess = new Process();
                String Process_Arguments = null;
                eProcess.StartInfo.UseShellExecute = false;
                eProcess.StartInfo.FileName = strConsoleAppLocation;
                Process_Arguments = filedirectorypath + " 7654" + PkgID;
                eProcess.StartInfo.Arguments = Process_Arguments;
                eProcess.Start();
                eProcess.WaitForExit();  // Modified 
                System.Threading.Thread.Sleep (1800); // Added 
                eProcess = null; //Deleted
                Process_Arguments = null; //Deleted
            }