本人是C#新手，希望各位大神多多关照。

 

 

今天下午为了这个问题 ， 苦恼了半天。

现将源码贴出来

 

using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Runtime.InteropServices;namespace ConsoleApplication1{    class Program    {        static void Main(string[] args)        {            SYSTEMTIME sm = new SYSTEMTIME            {                wYear = 2015,                wMonth = 8,                wDay = 27,                wHour = 11,                wMinute = 53,                wMilliseconds = 0            };            double t;            NativeMethods.SystemTimeToVariantTime(ref sm, out t);            Console.WriteLine(t);            Console.ReadKey(true);        }        [StructLayoutAttribute(System.Runtime.InteropServices.LayoutKind.Sequential)]        public struct SYSTEMTIME        {            /// WORD->unsigned short            public ushort wYear;            /// WORD->unsigned short            public ushort wMonth;            /// WORD->unsigned short            public ushort wDayOfWeek;            /// WORD->unsigned short            public ushort wDay;            /// WORD->unsigned short            public ushort wHour;            /// WORD->unsigned short            public ushort wMinute;            /// WORD->unsigned short            public ushort wSecond;            /// WORD->unsigned short            public ushort wMilliseconds;        }        public class NativeMethods        {            /// Return Type: INT->int            ///lpSystemTime: LPSYSTEMTIME->_SYSTEMTIME*            ///pvtime: DOUBLE*            [DllImportAttribute("OleAut32.dll", EntryPoint = "SystemTimeToVariantTime")]            public static extern int SystemTimeToVariantTime(ref SYSTEMTIME lpSystemTime, out double pvtime);        }    }}

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