Windows mobile 中获取内存使用情况

using System;
using System.Text;
using System.Runtime.InteropServices;

namespace TaskManager
{
    public class Memory
    {
        static MEMORYSTATUS status = new MEMORYSTATUS();

        P/V invoke#region P/V invoke
        private struct MEMORYSTATUS
        {
            public UInt32 dwLength;
            public UInt32 dwMemoryLoad;
            public UInt32 dwTotalPhys;
            public UInt32 dwAvailPhys;
            public UInt32 dwTotalPageFile;
            public UInt32 dwAvailPageFile;
            public UInt32 dwTotalVirtual;
            public UInt32 dwAvailVirtual;
        }

        [DllImport("CoreDll.dll")]
        private static extern void GlobalMemoryStatus
        (
            ref MEMORYSTATUS lpBuffer
        );

        [DllImport("CoreDll.dll")]
        private static extern int GetSystemMemoryDivision
        (
            ref UInt32 lpdwStorePages,
            ref UInt32 lpdwRamPages,
            ref UInt32 lpdwPageSize
        );

        #endregion

        public static void UpdateStatus()
        {
            GlobalMemoryStatus(ref status);
        }

        public static UInt32 TotalPhysicalMemory
        {
            get
            {
                return status.dwTotalPhys;
            }
        }

        public static UInt32 AvilablePhysicalMemory
        {
            get
            {
                return status.dwAvailPhys;
            }
        }

        public static UInt32 TotalVirtualMemory
        {
            get
            {
                return status.dwTotalVirtual;
            }
        }

        public static UInt32 AvilableVirtualMemory
        {
            get
            {
                return status.dwAvailVirtual;
            }
        }

        public static UInt32 TotalPageFile
        {
            get
            {
                return status.dwTotalPageFile;
            }
        }

        public static UInt32 AvilablePageFile
        {
            get
            {
                return status.dwAvailPageFile;
            }
        }
    }
}