Show WPF Form considering taskbar

     // Considering space for Taskbar at the bottom.
            MONITORINFO monitorInfo = new MONITORINFO();
            int MONITOR_DEFAULTTONEAREST = 0x00000001;
            System.IntPtr handle = (new WinInterop.WindowInteropHelper(this)).Handle;
            System.IntPtr monitor = MonitorFromWindow(handle, MONITOR_DEFAULTTONEAREST);
            GetMonitorInfo(monitor, monitorInfo);
            RECT rcWorkArea = monitorInfo.rcWork;
            RECT rcMonitorArea = monitorInfo.rcMonitor;

            M.Height = Math.Abs(rcWorkArea.bottom - rcWorkArea.top);// SystemParameters.MaximizedPrimaryScreenHeight - 20;
            M.Width = SystemParameters.MaximizedPrimaryScreenWidth - 15;

            M.Top = 0; M.Left = 0;

        #region Win32 API

        [DllImport("user32")]
        internal static extern bool GetMonitorInfo(IntPtr hMonitor, MONITORINFO lpmi);

        /// 

        /// 
        /// 
        [DllImport("User32")]
        internal static extern IntPtr MonitorFromWindow(IntPtr handle, int flags);

        #endregion