贴代码 求解..

        [DllImportAttribute("F://YHBus.dll", EntryPoint = "GetData", CharSet = CharSet.Ansi, CallingConvention = CallingConvention.StdCall)]
        public static extern bool GetData(IntPtr pCommand, DMSTATUS DMStatus, int nSize);
        public struct DMSTATUS//机状态
        {
            public int nYear;
            public int nMonth;
            public int nDay;
            public int nWeek;
            public int nHour;
            public int nMinute;
            public int nSecond;
            public int nRecordCount;
            
        }
        bool tGetData = GetData(m_ActReturn,DMStatus, length);//这里始终返回false DMStatus空值 接受的数据包是正确的.. 求解        Console.WriteLine("年：" + DMStatus.nYear.ToString());