Compares two DateTimeOffset objects and indicates whether the first is earlier than the second, equal to the second, or later than the second.
A signed integer that indicates whether the value of the first parameter is earlier than, later than, or the same time as the value of the second parameter, as the following table shows.
Less than zero first is earlier than second.
Zero first is equal to second.
Greater than zero first is later than second.
In performing the comparison, the method converts both the first and the second parameters to Coordinated Universal Time (UTC) before it performs the comparison. The method is equivalent to the following:
code reference: System.DateTimeOffset.Syntax#1
In other words, the DateTimeOffset.Compare(DateTimeOffset, DateTimeOffset) method determines whether two DateTimeOffset objects represent a single point in time. It directly compares neither dates and times nor offsets.