Equality Operator

DateTimeOffset.Equality Operator

[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]

Determines whether two specified DateTimeOffset objects represent the same point in time.

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

public static bool operator ==(
	DateTimeOffset left,
	DateTimeOffset right


Type: System.DateTimeOffset
The first object to compare.
Type: System.DateTimeOffset
The second object to compare.

Return Value

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

The Equality method defines the operation of the equality operator for DateTimeOffset objects. It enables code such as the following:

DateTimeOffset date1 = new DateTimeOffset(2007, 6, 3, 14, 45, 0,
             new TimeSpan(-7, 0, 0));
DateTimeOffset date2 = new DateTimeOffset(2007, 6, 3, 15, 45, 0,
             new TimeSpan(-6, 0, 0));
DateTimeOffset date3 = new DateTimeOffset(date1.DateTime,
             new TimeSpan(-6, 0, 0));
outputBlock.Text += (date1 == date2) + "\n";        // Displays True
outputBlock.Text += (date1 == date3) + "\n";        // Displays False 

Before evaluating the left and right operands for equality, the operator converts both values to Coordinated Universal Time (UTC). The operation is equivalent to the following:

return first.UtcDateTime == second.UtcDateTime;

In other words, the Equality method determines whether the 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.

Windows Phone OS

Supported in: 8.1, 8.0, 7.1, 7.0

Windows Phone

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