DateTime.Equals 方法

多載

 Equals(DateTime, DateTime) 傳回值，指出兩個 DateTime 執行個體是否有相同的日期和時間值。Returns a value indicating whether two DateTime instances have the same date and time value. Equals(DateTime) 傳回值，該值指出這個執行個體的值是否等於指定之 DateTime 執行個體的值。Returns a value indicating whether the value of this instance is equal to the value of the specified DateTime instance. Equals(Object) 傳回值，指出此執行個體是否等於指定的物件。Returns a value indicating whether this instance is equal to a specified object.

Equals(DateTime, DateTime)

``````public:
static bool Equals(DateTime t1, DateTime t2);``````
``public static bool Equals (DateTime t1, DateTime t2);``
``static member Equals : DateTime * DateTime -> bool``
``Public Shared Function Equals (t1 As DateTime, t2 As DateTime) As Boolean``

t1
DateTime

t2
DateTime

範例

``````System::DateTime today1 = System::DateTime(
System::DateTime::Today.Ticks );
System::DateTime today2 = System::DateTime(
System::DateTime::Today.Ticks );
System::DateTime tomorrow = System::DateTime(
System::DateTime::Today.AddDays( 1 ).Ticks );

// todayEqualsToday gets true.
bool todayEqualsToday = System::DateTime::Equals( today1, today2 );

// todayEqualsTomorrow gets false.
bool todayEqualsTomorrow = System::DateTime::Equals( today1, tomorrow );
``````
``````System.DateTime today1 =
new System.DateTime(System.DateTime.Today.Ticks);
System.DateTime today2 =
new System.DateTime(System.DateTime.Today.Ticks);
System.DateTime tomorrow =
new System.DateTime(

// todayEqualsToday gets true.
bool todayEqualsToday = System.DateTime.Equals(today1, today2);

// todayEqualsTomorrow gets false.
bool todayEqualsTomorrow = System.DateTime.Equals(today1, tomorrow);
``````
``````Dim today1 As New System.DateTime(System.DateTime.Today.Ticks)
Dim today2 As New System.DateTime(System.DateTime.Today.Ticks)
Dim tomorrow As New System.DateTime( _

' todayEqualsToday gets true.
Dim todayEqualsToday As Boolean = System.DateTime.Equals(today1, today2)

' todayEqualsTomorrow gets false.
Dim todayEqualsTomorrow As Boolean = System.DateTime.Equals(today1, tomorrow)
``````

Equals(DateTime)

``````public:
virtual bool Equals(DateTime value);``````
``public bool Equals (DateTime value);``
``override this.Equals : DateTime -> bool``
``Public Function Equals (value As DateTime) As Boolean``

value
DateTime

傳回

`true` 參數等於這個執行個體的值時為 `value`，否則為 `false``true` if the `value` parameter equals the value of this instance; otherwise, `false`.

範例

``````using System;

public class Application
{
public static void Main()
{
// Create some DateTime objects.
DateTime one = DateTime.UtcNow;

DateTime two = DateTime.Now;

DateTime three = one;

// Compare the DateTime objects and display the results.
bool result = one.Equals(two);

Console.WriteLine("The result of comparing DateTime object one and two is: {0}.", result);

result = one.Equals(three);

Console.WriteLine("The result of comparing DateTime object one and three is: {0}.", result);
}
}

// This code example displays the following:
//
// The result of comparing DateTime object one and two is: False.
// The result of comparing DateTime object one and three is: True.
``````
``````Module Application

Sub Main()
' Create some DateTime objects.
Dim one As DateTime = DateTime.UtcNow

Dim two As DateTime = DateTime.Now

Dim three As DateTime = one

' Compare the DateTime objects and display the results.
Dim result As Boolean = one.Equals(two)

Console.WriteLine("The result of comparing DateTime object one and two is: {0}.", result)

result = one.Equals(three)

Console.WriteLine("The result of comparing DateTime object one and three is: {0}.", result)

End Sub
End Module

' This code example displays the following:
'
' The result of comparing DateTime object one and two is: False.
' The result of comparing DateTime object one and three is: True.
``````

Equals(Object)

``````public:
override bool Equals(System::Object ^ value);``````
``public override bool Equals (object value);``
``override this.Equals : obj -> bool``
``Public Overrides Function Equals (value As Object) As Boolean``

value
Object

範例

``````using System;

public class Application
{
public static void Main()
{
// Create some DateTime objects.
DateTime one = DateTime.UtcNow;

DateTime two = DateTime.Now;

DateTime three = one;

// Compare the DateTime objects and display the results.
bool result = one.Equals(two);

Console.WriteLine("The result of comparing DateTime object one and two is: {0}.", result);

result = one.Equals(three);

Console.WriteLine("The result of comparing DateTime object one and three is: {0}.", result);
}
}

// This code example displays the following:
//
// The result of comparing DateTime object one and two is: False.
// The result of comparing DateTime object one and three is: True.
``````
``````Module Application

Sub Main()
' Create some DateTime objects.
Dim one As DateTime = DateTime.UtcNow

Dim two As DateTime = DateTime.Now

Dim three As DateTime = one

' Compare the DateTime objects and display the results.
Dim result As Boolean = one.Equals(two)

Console.WriteLine("The result of comparing DateTime object one and two is: {0}.", result)

result = one.Equals(three)

Console.WriteLine("The result of comparing DateTime object one and three is: {0}.", result)

End Sub
End Module

' This code example displays the following:
'
' The result of comparing DateTime object one and two is: False.
' The result of comparing DateTime object one and three is: True.
``````