System.Diagnostics.PerformanceCounter.Close C# (CSharp) Method

        public void Close() { }
        public void EndInit() { }

        /// <summary>
        /// This method is responsible for monitoring system resource and user activity with the computer
        /// And periodically changes the shared variable 'crawlerState'
        /// </summary>
        public void Scheduler()
        {
            PerformanceCounter pc = new PerformanceCounter("Processor", "% Idle Time", "_Total", true);

            LASTINPUTINFO info = new LASTINPUTINFO();
            info.cbSize = Marshal.SizeOf(typeof(LASTINPUTINFO));
            while (GlobalData.RunScheduler)
            {
                if (GetLastInputInfo(ref info))
                {
                    if ((Environment.TickCount - info.dwTime) / 1000 > 5 && (int)pc.NextValue() > 40)
                    {
                        crawlerState = CrawlerState.Run;
                    }
                    else
                    {
                        crawlerState = CrawlerState.Stop;
                        if ((Environment.TickCount - info.dwTime) / 1000 <= 5)
                            GlobalData.lIndexingStatus.Text = string.Format("Indexing is paused and will be resumed in {0} sec of computer inactivity [ CPU Idle : {1:F2}% ]", 5 - (Environment.TickCount - info.dwTime) / 1000, pc.NextValue());
                    }
                }
                Thread.Sleep(1000);
            }
            pc.Close();
        }