public static bool Equal(this DateTime now, DateTime then, DatePartFlags flags)
{
bool isEqual = false;
if (flags == DatePartFlags.Ticks)
{
isEqual = (now == then);
}
else
{
DatePartFlags equalFlags = DatePartFlags.Ticks;
equalFlags |= (FlagIsSet(flags, DatePartFlags.Year) && now.Year == then.Year) ? DatePartFlags.Year : 0;
equalFlags |= (FlagIsSet(flags, DatePartFlags.Month) && now.Month == then.Month) ? DatePartFlags.Month : 0;
equalFlags |= (FlagIsSet(flags, DatePartFlags.Day) && now.Day == then.Day) ? DatePartFlags.Day : 0;
equalFlags |= (FlagIsSet(flags, DatePartFlags.Hour) && now.Hour == then.Hour) ? DatePartFlags.Hour : 0;
equalFlags |= (FlagIsSet(flags, DatePartFlags.Minute) && now.Minute == then.Minute) ? DatePartFlags.Minute : 0;
equalFlags |= (FlagIsSet(flags, DatePartFlags.Second) && now.Second == then.Second) ? DatePartFlags.Second : 0;
equalFlags |= (FlagIsSet(flags, DatePartFlags.Millisecond) && now.Millisecond == then.Millisecond) ? DatePartFlags.Millisecond : 0;
isEqual = (flags == equalFlags);
}
return(isEqual);
}
//////////////////////////////////////////////////////////////////////////////////
// DateTime methods
private static bool FlagIsSet(DatePartFlags flags, DatePartFlags flag)
{
bool isSet = ((flags & flag) == flag);
return(isSet);
}
