# DateTimeOffset.Equality(DateTimeOffset, DateTimeOffset) 演算子

## 定義

``````public:
static bool operator ==(DateTimeOffset left, DateTimeOffset right);``````
``public static bool operator == (DateTimeOffset left, DateTimeOffset right);``
``static member ( = ) : DateTimeOffset * DateTimeOffset -> bool``
``Public Shared Operator == (left As DateTimeOffset, right As DateTimeOffset) As Boolean``

left
DateTimeOffset

right
DateTimeOffset

## 注釈

Equality メソッドは、DateTimeOffset オブジェクトの等値演算子の演算を定義します。The Equality method defines the operation of the equality operator for DateTimeOffset objects. 次のようなコードが有効になります。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));
Console.WriteLine(date1 == date2);        // Displays True
Console.WriteLine(date1 == date3);        // Displays False
``````
``````Dim date1 As New DateTimeOffset(#6/3/2007 2:45PM#, _
New TimeSpan(-7, 0, 0))
Dim date2 As New DateTimeOffset(#6/3/2007 3:45PM#, _
New TimeSpan(-6, 0, 0))
Dim date3 As New DateTimeOffset(date1.DateTime, _
New TimeSpan(-6, 0, 0))
Console.WriteLine(date1 = date2)        ' Displays True
Console.WriteLine(date1 = date3)        ' Displays False
``````

`left``right` オペランドが等しいかどうかを評価する前に、演算子は両方の値を世界協定時刻 (UTC) に変換します。Before evaluating the `left` and `right` operands for equality, the operator converts both values to Coordinated Universal Time (UTC). 操作は、次の場合と同じです。The operation is equivalent to the following:

``````return first.UtcDateTime == second.UtcDateTime;
``````
``````Return first.UtcDateTime = second.UtcDateTime
``````

この演算子の同等のメソッドは DateTimeOffset.Equals(DateTimeOffset, DateTimeOffset)The equivalent method for this operator is DateTimeOffset.Equals(DateTimeOffset, DateTimeOffset)