DateTime.Compare(DateTime, DateTime) DateTime.Compare(DateTime, DateTime) DateTime.Compare(DateTime, DateTime) DateTime.Compare(DateTime, DateTime) Method

Definição

Compara duas instâncias do DateTime e retorna um inteiro que indica se a primeira instância é anterior, a mesma ou posterior à segunda instância.Compares two instances of DateTime and returns an integer that indicates whether the first instance is earlier than, the same as, or later than the second instance.

public:
 static int Compare(DateTime t1, DateTime t2);
public static int Compare (DateTime t1, DateTime t2);
static member Compare : DateTime * DateTime -> int
Public Shared Function Compare (t1 As DateTime, t2 As DateTime) As Integer

Parâmetros

t1
DateTime DateTime DateTime DateTime

O primeiro objeto a ser comparado.The first object to compare.

t2
DateTime DateTime DateTime DateTime

O segundo objeto a ser comparado.The second object to compare.

Retornos

Um número assinado que indica os valores relativos de t1 e t2.A signed number indicating the relative values of t1 and t2.

Tipo do ValorValue Type CondiçãoCondition
Menor que zeroLess than zero t1 é anterior a t2.t1 is earlier than t2.
ZeroZero t1 é o mesmo que t2.t1 is the same as t2.
Maior que zeroGreater than zero t1 é posterior a t2.t1 is later than t2.

Exemplos

O exemplo a seguir demonstra o método Compare.The following example demonstrates the Compare method.

using System;

public class Example
{
   public static void Main()
   {
      DateTime date1 = new DateTime(2009, 8, 1, 0, 0, 0);
      DateTime date2 = new DateTime(2009, 8, 1, 12, 0, 0);
      int result = DateTime.Compare(date1, date2);
      string relationship;
      
      if (result < 0)
         relationship = "is earlier than";
      else if (result == 0)
         relationship = "is the same time as";         
      else
         relationship = "is later than";

      Console.WriteLine("{0} {1} {2}", date1, relationship, date2);
   }
}
// The example displays the following output:
//    8/1/2009 12:00:00 AM is earlier than 8/1/2009 12:00:00 PM
Module Example
   Public Sub Main()
      Dim date1 As Date = #08/01/2009 12:00AM#
      Dim date2 As Date = #08/01/2009 12:00PM#
      Dim result As Integer = DateTime.Compare(date1, date2)
      Dim relationship As String
      
      If result < 0 Then
         relationship = "is earlier than"
      ElseIf result = 0 Then
         relationship = "is the same time as"         
      Else
         relationship = "is later than"
      End If
      
      Console.WriteLine("{0} {1} {2}", date1, relationship, date2)
   End Sub
End Module
' The example displays the following output:
'    8/1/2009 12:00:00 AM is earlier than 8/1/2009 12:00:00 PM

Comentários

Para determinar a relação de t1 a t2, o método Compare compara a propriedade Ticks de t1 e t2, mas ignora sua propriedade Kind.To determine the relationship of t1 to t2, the Compare method compares the Ticks property of t1 and t2 but ignores their Kind property. Antes de comparar os objetos DateTime, verifique se os objetos representam os horários no mesmo fuso horário.Before comparing DateTime objects, ensure that the objects represent times in the same time zone.

Aplica-se a

Veja também