What is the best way to determine if a System.DateTime is midnight?

Question

It seems that there are several possible ways to determine if a given System.DateTime represents midnight. What are the pros and cons of each? Is one more readable or perform better than the others?

EDIT: I believe that readability is more important than performance until profiling shows that there is an issue. That is why I asked about both.

Example 1

Public Function IsMidnight(ByVal value As Date) As Boolean     Return value.TimeOfDay = TimeSpan.FromHours(0) End Function 

Example 2

Public Function IsMidnight(ByVal value As Date) As Boolean     Return value.CompareTo(value.[Date]) = 0 End Function 

Answer 1

I'd check (using C# for the example):

bool isMidnight = value.TimeOfDay.Ticks == 0; 

IMO, this is easier than using FromHours etc, and doesn't involve any extra multiplication (since Ticks defined the TimeSpan - all the other properties are calculated).