DateTimeOffset.Equals Method (DateTimeOffset)

Determines whether the current DateTimeOffset object represents the same point in time as a specified DateTimeOffset object.

Namespace:  System
Assembly:  mscorlib (in mscorlib.dll)

public bool Equals(
	DateTimeOffset other
)

Parameters

other
Type: System.DateTimeOffset

A DateTimeOffset object to compare to the current DateTimeOffset object.

Return Value

Type: System.Boolean
true if both DateTimeOffset objects have the same UtcDateTime value; otherwise, false.

Implements

IEquatable<T>.Equals(T)

Before it performs the comparison, this method converts the values of both DateTimeOffset objects to Coordinated Universal Time (UTC). The method is equivalent to the following:

return this.UtcDateTime == other.UtcDateTime;

In other words, the Equals(DateTimeOffset) method determines whether two DateTimeOffset objects represent a single point in time. It directly compares neither dates and times nor offsets. To determine whether two DateTimeOffset objects represent the same time and have the same offset value, use the EqualsExact method.

A DateTimeOffset object that is not null is considered to be later (or greater) than one that is null.

This overload of the Equals(DateTimeOffset) method implements the IEquatable<T>.Equals method. It offers slightly better performance than the DateTimeOffset.Equals(Object) overload because the other parameter does not have to be converted from an object.

The following example illustrates calls to the Equals(DateTimeOffset) method to test DateTimeOffset objects for equality with the current DateTimeOffset object.

private static void CompareForEquality1()
{
   DateTimeOffset firstTime = new DateTimeOffset(2007, 9, 1, 6, 45, 0, 
                              new TimeSpan(-7, 0, 0));

   DateTimeOffset secondTime = firstTime;
   Console.WriteLine("{0} = {1}: {2}", 
                     firstTime, secondTime, 
                     firstTime.Equals(secondTime));

   secondTime = new DateTimeOffset(2007, 9, 1, 6, 45, 0, 
                    new TimeSpan(-6, 0, 0));      
   Console.WriteLine("{0} = {1}: {2}", 
                    firstTime, secondTime, 
                    firstTime.Equals(secondTime));

   secondTime = new DateTimeOffset(2007, 9, 1, 8, 45, 0, 
                    new TimeSpan(-5, 0, 0));
   Console.WriteLine("{0} = {1}: {2}", 
                    firstTime, secondTime, 
                    firstTime.Equals(secondTime));
   // The example displays the following output to the console: 
   //      9/1/2007 6:45:00 AM -07:00 = 9/1/2007 6:45:00 AM -07:00: True 
   //      9/1/2007 6:45:00 AM -07:00 = 9/1/2007 6:45:00 AM -06:00: False 
   //      9/1/2007 6:45:00 AM -07:00 = 9/1/2007 8:45:00 AM -05:00: True       

Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5 SP1, 3.0 SP1, 2.0 SP1
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