public static DateTime?ToDateTime(this WINAPI.FILETIME time)
{
if ((time.dwHighDateTime == 0) && (time.dwLowDateTime == 0))
{
return(null);
}
uint dwLowDateTime = (uint)time.dwLowDateTime;
#pragma warning disable CS0675 // Bitwise-or operator used on a sign-extended operand
long fileTime = (time.dwHighDateTime << 0x20) | dwLowDateTime;
#pragma warning restore CS0675 // Bitwise-or operator used on a sign-extended operand
return(new DateTime?(DateTime.FromFileTimeUtc(fileTime)));
}
/// <summary>
/// </summary>
/// <param name="time"></param>
/// <returns></returns>
public static DateTime?ToDateTime(this WINAPI.FILETIME time)
{
if (time.dwHighDateTime == 0 && time.dwLowDateTime == 0)
{
return(null);
}
unchecked
{
uint low = (uint)time.dwLowDateTime;
long ft = (((long)time.dwHighDateTime) << 32 | low);
return(DateTime.FromFileTimeUtc(ft));
}
}
/// <summary>
/// </summary>
/// <param name="time"> </param>
/// <returns> </returns>
public static DateTime?ToDateTime(this WINAPI.FILETIME time)
{
switch (time.dwHighDateTime)
{
case 0 when time.dwLowDateTime == 0:
case 0 when time.dwLowDateTime == 0:
return(null);
default:
unchecked
{
uint low = (uint)time.dwLowDateTime;
long ft = ((long)time.dwHighDateTime << 32) | low;
return(DateTime.FromFileTimeUtc(ft));
}
}
}
