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DateTime.Equality(DateTime, DateTime) 運算子

定義

判斷 DateTime 的兩個指定執行個體是否相等。

public:
 static bool operator ==(DateTime d1, DateTime d2);
public static bool operator == (DateTime d1, DateTime d2);
static member ( = ) : DateTime * DateTime -> bool
Public Shared Operator == (d1 As DateTime, d2 As DateTime) As Boolean

參數

d1
DateTime

要比較的第一個物件。

d2
DateTime

要比較的第二個物件。

傳回

Boolean

trued1 代表相同的日期和時間時為 d2,否則為 false

範例

下列範例示範等號比較運算子。

System::DateTime april19( 2001, 4, 19 );
System::DateTime otherDate( 1991, 6, 5 );

// areEqual gets false.
bool areEqual = april19 == otherDate;

otherDate = DateTime( 2001, 4, 19 );
// areEqual gets true.
areEqual = april19 == otherDate;
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;
Dim april19 As New DateTime(2001, 4, 19)
Dim otherDate As New DateTime(1991, 6, 5)

Dim areEqual As Boolean
' areEqual gets false.
areEqual = DateTime.op_Equality(april19, otherDate)

otherDate = New DateTime(2001, 4, 19)
' areEqual gets true.
areEqual = System.DateTime.op_Equality(april19, otherDate)

備註

Equality運算子 DateTime 會藉由比較它們的刻度數目來判斷兩個值是否相等。 在比較 DateTime 物件之前,請確定物件代表相同時區的時間。 只要比較其 Kind 屬性的值,即可做到這一點。

這個運算子的對等方法是 DateTime.Equals(Object)

適用於

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