public static DateTime FiletimeToDateTime(FILETIME fileTime)
{
if ((fileTime.dwHighDateTime == Int32.MaxValue) ||
(fileTime.dwHighDateTime == 0 && fileTime.dwLowDateTime == 0))
{
// Not going to fit in the DateTime. In the WinInet APIs, this is
// what happens when there is no FILETIME attached to the cache entry.
// We're going to use DateTime.MinValue as a marker for this case.
return DateTime.MaxValue;
}
//long hFT2 = (((long)fileTime.dwHighDateTime) << 32) + fileTime.dwLowDateTime;
//return DateTime.FromFileTimeUtc(hFT2);
SYSTEMTIME syst = new SYSTEMTIME();
SYSTEMTIME systLocal = new SYSTEMTIME();
if (0 == FileTimeToSystemTime(ref fileTime, ref syst))
{
throw new ApplicationException("Error calling FileTimeToSystemTime: " + Marshal.GetLastWin32Error().ToString());
}
if (0 == SystemTimeToTzSpecificLocalTime(IntPtr.Zero, ref syst, out systLocal))
{
throw new ApplicationException("Error calling SystemTimeToTzSpecificLocalTime: " + Marshal.GetLastWin32Error().ToString());
}
return new DateTime(systLocal.Year, systLocal.Month, systLocal.Day, systLocal.Hour, systLocal.Minute, systLocal.Second);
}
public static extern long SystemTimeToTzSpecificLocalTime(
IntPtr lpTimeZoneInformation, ref SYSTEMTIME lpUniversalTime,
out SYSTEMTIME lpLocalTime);
public static extern long SystemTimeToTzSpecificLocalTime(
IntPtr lpTimeZoneInformation, ref SYSTEMTIME lpUniversalTime,
out SYSTEMTIME lpLocalTime);
public static extern long FileTimeToSystemTime(ref FILETIME FileTime,
ref SYSTEMTIME SystemTime);
public static extern long FileTimeToSystemTime(ref FILETIME FileTime,
ref SYSTEMTIME SystemTime);