using System; using System.Runtime.InteropServices; namespace Microsoft.Win32 { internal static partial class NativeMethods { [StructLayout(LayoutKind.Sequential, Pack = 2)] internal struct SYSTEMTIME { public ushort Year; public ushort Month; public ushort DayOfWeek; public ushort Day; public ushort Hour; public ushort Minute; public ushort Second; public ushort Milliseconds; public SYSTEMTIME(DateTime dt) { dt = dt.ToLocalTime(); Year = Convert.ToUInt16(dt.Year); Month = Convert.ToUInt16(dt.Month); DayOfWeek = Convert.ToUInt16(dt.DayOfWeek); Day = Convert.ToUInt16(dt.Day); Hour = Convert.ToUInt16(dt.Hour); Minute = Convert.ToUInt16(dt.Minute); Second = Convert.ToUInt16(dt.Second); Milliseconds = Convert.ToUInt16(dt.Millisecond); } public SYSTEMTIME(ushort year, ushort month, ushort day, ushort hour = 0, ushort minute = 0, ushort second = 0, ushort millisecond = 0) { Year = year; Month = month; Day = day; Hour = hour; Minute = minute; Second = second; Milliseconds = millisecond; DayOfWeek = 0; } public static implicit operator DateTime(SYSTEMTIME st) { if (st.Year == 0 || st == MinValue) return DateTime.MinValue; if (st == MaxValue) return DateTime.MaxValue; return new DateTime(st.Year, st.Month, st.Day, st.Hour, st.Minute, st.Second, st.Milliseconds, DateTimeKind.Local); } public static implicit operator SYSTEMTIME(DateTime dt) { return new SYSTEMTIME(dt); } public static bool operator ==(SYSTEMTIME s1, SYSTEMTIME s2) { return (s1.Year == s2.Year && s1.Month == s2.Month && s1.Day == s2.Day && s1.Hour == s2.Hour && s1.Minute == s2.Minute && s1.Second == s2.Second && s1.Milliseconds == s2.Milliseconds); } public static bool operator !=(SYSTEMTIME s1, SYSTEMTIME s2) { return !(s1 == s2); } public static readonly SYSTEMTIME MinValue, MaxValue; static SYSTEMTIME() { MinValue = new SYSTEMTIME(1601, 1, 1); MaxValue = new SYSTEMTIME(30827, 12, 31, 23, 59, 59, 999); } public override bool Equals(object obj) { if (obj is SYSTEMTIME) return ((SYSTEMTIME)obj) == this; return base.Equals(obj); } public override int GetHashCode() { return base.GetHashCode(); } public override string ToString() { return ((DateTime)this).ToString(); } } } }