C#利用win32 Api 修改本地系统时间、获取硬盘序列号

c#利用win32 api 修改本地系统时间、获取硬盘序列号，可以用于软件注册机制的编写！

using system;
using system.collections.generic;
using system.text;
using system.runtime.interopservices;
namespace fengyun
{
    public class win32
    {
        #region 修改本地系统时间
        [dllimport("kernel32.dll")]
        private extern static void getsystemtime(ref systemtime lpsystemtime);
        [dllimport("kernel32.dll")]
        private extern static uint setlocaltime(ref systemtime lpsystemtime);
        [structlayout(layoutkind.sequential)]
        private struct systemtime
        {
            public ushort wyear;
            public ushort wmonth;
            public ushort wdayofweek;
            public ushort wday;
            public ushort whour;
            public ushort wminute;
            public ushort wsecond;
            public ushort wmilliseconds;
        }
        /// <summary>
        /// 将本地时间与sqlserver服务器时间同步
        /// </summary>
        /// <param name="sqlservertime">时间</param>
        public static void settime(datetime sqlservertime)
        {
            systemtime st = new systemtime();
            st.wyear = convert.touint16(sqlservertime.year);
            st.wmonth = convert.touint16(sqlservertime.month);
            st.wday = convert.touint16(sqlservertime.day);
            st.whour = convert.touint16(sqlservertime.hour);
            st.wmilliseconds = convert.touint16(sqlservertime.millisecond);
            st.wminute = convert.touint16(sqlservertime.minute);
            st.wsecond = convert.touint16(sqlservertime.second);
            setlocaltime(ref st);
        }
        #endregion
        #region 获取硬盘序列号
        [dllimport("kernel32.dll")]
        private static extern int getvolumeinformation(
        string lprootpathname,
        string lpvolumenamebuffer,
        int nvolumenamesize,
        ref int lpvolumeserialnumber,
        int lpmaximumcomponentlength,
        int lpfilesystemflags,
        string lpfilesystemnamebuffer,
        int nfilesystemnamesize
        );
        /// <summary>
        /// 获取硬盘序列号
        /// </summary>
        /// <param name="drvid">硬盘盘符[c|d|e|....]</param>
        /// <returns></returns>
        public static string getdiskvolume(string drvid)
        {
            const int max_filename_len = 256;
            int retval = 0;
            int lpmaximumcomponentlength = 0;
            int lpfilesystemflags = 0;
            string lpvolumenamebuffer = null;
            string lpfilesystemnamebuffer = null;
            int i = getvolumeinformation(
            drvid + @":\",
            lpvolumenamebuffer,
            max_filename_len,
            ref retval,
            lpmaximumcomponentlength,
            lpfilesystemflags,
            lpfilesystemnamebuffer,
            max_filename_len
            );
            return retval.tostring("x");
        }
        #endregion
    }
}

以上就是本文所分享的代码的全部内容了，希望对大家学习c#能有所帮助。