Tuple<T1,T2>.Item1 Tuple<T1,T2>.Item1 Tuple<T1,T2>.Item1 Tuple<T1,T2>.Item1 Property

Definição

Obtém o valor do primeiro componente do objeto Tuple<T1,T2> atual.Gets the value of the current Tuple<T1,T2> object's first component.

public:
 property T1 Item1 { T1 get(); };
public T1 Item1 { get; }
member this.Item1 : 'T1
Public ReadOnly Property Item1 As T1

Valor da propriedade

T1 T1 T1 T1

O valor do primeiro componente do objeto Tuple<T1,T2> atual.The value of the current Tuple<T1,T2> object's first component.

Exemplos

O exemplo ilustra o uso do Item1 e Item2 propriedades para definir um método que retorna vários valores na forma de uma tupla de 2.The example illustrates the use of the Item1 and Item2 properties to define a method that returns multiple values in the form of a 2-tuple.

using System;

public class Class1
{
   public static void Main()
   {
      int dividend, divisor;
      Tuple<int, int> result;
      
      dividend = 136945; divisor = 178;
      result = IntegerDivide(dividend, divisor);
      if (result != null)
         Console.WriteLine(@"{0} \ {1} = {2}, remainder {3}", 
                           dividend, divisor, result.Item1, result.Item2);
      else
         Console.WriteLine(@"{0} \ {1} = <Error>", dividend, divisor);
                        
      dividend = Int32.MaxValue; divisor = -2073;
      result = IntegerDivide(dividend, divisor);
      if (result != null)
         Console.WriteLine(@"{0} \ {1} = {2}, remainder {3}", 
                           dividend, divisor, result.Item1, result.Item2);
      else
         Console.WriteLine(@"{0} \ {1} = <Error>", dividend, divisor);
   }

   private static Tuple<int, int> IntegerDivide(int dividend, int divisor)
   {
      try {
         int remainder;
         int quotient = Math.DivRem(dividend, divisor, out remainder);
         return new Tuple<int, int>(quotient, remainder);
      }   
      catch (DivideByZeroException) {
         return null;
      }      
   }
}
// The example displays the following output:
//       136945 \ 178 = 769, remainder 63
//       2147483647 \ -2073 = -1035930, remainder 757
Module modMain
   Public Sub Main()
      Dim dividend, divisor As Integer
      Dim result As Tuple(Of Integer, Integer)
      
      dividend = 136945 : divisor = 178
      result = IntegerDivide(dividend, divisor)
      If result IsNot Nothing Then
         Console.WriteLine("{0} \ {1} = {2}, remainder {3}", 
                           dividend, divisor, result.Item1, result.Item2)
      Else
         Console.WriteLine("{0} \ {1} = <Error>", dividend, divisor)
      End If
                        
      dividend = Int32.MaxValue : divisor = -2073
      result = IntegerDivide(dividend, divisor)
      If result IsNot Nothing Then
         Console.WriteLine("{0} \ {1} = {2}, remainder {3}", 
                           dividend, divisor, result.Item1, result.Item2)
      Else
         Console.WriteLine("{0} \ {1} = <Error>", dividend, divisor)
      End If
   End Sub
   
   Private Function IntegerDivide(dividend As Integer, divisor As Integer) As Tuple(Of Integer, Integer)
      Try
         Dim remainder As Integer
         Dim quotient As Integer = Math.DivRem(dividend, divisor, remainder)
         Return New Tuple(Of Integer, Integer)(quotient, remainder)
      Catch e As DivideByZeroException
         Return Nothing
      End Try      
   End Function
End Module
' The example displays the following output:
'       136945 \ 178 = 769, remainder 63
'       2147483647 \ -2073 = -1035930, remainder 757

Comentários

É possível determinar dinamicamente o tipo do componente Item1 de duas maneiras:You can dynamically determine the type of the Item1 component in one of two ways:

  • Chamando o método GetType no valor retornado pela propriedade Item1.By calling the GetType method on the value that is returned by the Item1 property.

  • Recuperando o objeto Type que representa o objeto Tuple<T1,T2> e recuperando o primeiro elemento da matriz que é retornada pelo método Type.GetGenericArguments.By retrieving the Type object that represents the Tuple<T1,T2> object, and retrieving the first element from the array that is returned by its Type.GetGenericArguments method.

Aplica-se a