DateTime.Equality Operator

Determines whether two specified instances of DateTime are equal.

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

public static bool operator ==(
	DateTime d1,
	DateTime d2
)

Parameters

d1
Type: System.DateTime

The first object to compare.

d2
Type: System.DateTime

The second object to compare.

Return Value

Type: System.Boolean
true if d1 and d2 represent the same date and time; otherwise, false.

The Equality operator determines whether two DateTime values are equal by comparing their number of ticks. Before comparing DateTime objects, make sure that the objects represent times in the same time zone. You can do this by comparing the values of their Kind property.

The following example demonstrates the equality operator.

			System.DateTime april19 = new DateTime(2001, 4, 19);
			System.DateTime otherDate = new DateTime(1991, 6, 5);

			// areEqual gets false. 
			bool areEqual = april19 == otherDate;
				
			otherDate = new DateTime(2001, 4, 19);
			// areEqual gets true.
			areEqual = april19 == otherDate;

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

XNA Framework

Supported in: 3.0, 2.0, 1.0

Portable Class Library

Supported in: Portable Class Library

Supported in: Windows Phone 8.1

Supported in: Windows Phone Silverlight 8.1

Supported in: Windows Phone Silverlight 8
Was this page helpful?
(1500 characters remaining)
Thank you for your feedback
Show:
© 2015 Microsoft