Tuple<T1,T2,T3,T4>.Item4 Propriedade
Definição
Obtém o valor do quarto componente do objeto Tuple<T1,T2,T3,T4> atual.Gets the value of the current Tuple<T1,T2,T3,T4> object's fourth component.
public:
property T4 Item4 { T4 get(); };
public T4 Item4 { get; }
member this.Item4 : 'T4
Public ReadOnly Property Item4 As T4
Valor da propriedade
- T4
O valor do Tuple<T1,T2,T3,T4> quarto componente do objeto atual.The value of the current Tuple<T1,T2,T3,T4> object's fourth component.
Exemplos
O exemplo a seguir define uma matriz de objetos Tuple<T1,T2,T3,T4> cujos componentes contêm o nome de uma cidade, um mês do ano e as temperaturas médias máxima e mínima para esse mês.The following example defines an array of Tuple<T1,T2,T3,T4> objects whose components contain the name of a city, a month of the year, and the average high and low temperatures for that month. Em seguida, ele recupera e exibe o valor de cada componente.It then retrieves and displays the value of each component.
using System;
using System.Globalization;
public class Example
{
public static void Main()
{
Tuple<string, int, double, double>[] temperatures =
{ Tuple.Create("New York, NY", 4, 61.0, 43.0),
Tuple.Create("Chicago, IL", 2, 34.0, 18.0),
Tuple.Create("Newark, NJ", 4, 61.0, 43.0),
Tuple.Create("Boston, MA", 6, 77.0, 59.0),
Tuple.Create("Detroit, MI", 9, 74.0, 53.0),
Tuple.Create("Minneapolis, MN", 8, 81.0, 61.0) };
// Display the array of 4-tuple objects.
Console.WriteLine("{0,41}", "Temperatures");
Console.WriteLine("{0,-20} {1,5} {2,4} {3,4}\n",
"City", "Month", "High", "Low");
foreach (var temperature in temperatures)
Console.WriteLine("{0,-20} {1,5} {2,4:N1} {3,4:N1}",
temperature.Item1,
DateTimeFormatInfo.CurrentInfo.GetAbbreviatedMonthName(temperature.Item2 - 1),
temperature.Item3, temperature.Item4);
}
}
// The example displays the following output:
// Temperatures
// City Month High Low
//
// New York, NY Mar 61.0 43.0
// Chicago, IL Jan 34.0 18.0
// Newark, NJ Mar 61.0 43.0
// Boston, MA May 77.0 59.0
// Detroit, MI Aug 74.0 53.0
// Minneapolis, MN Jul 81.0 61.0
Imports System.Globalization
Module Example
Public Sub Main()
Dim temperatures() =
{ Tuple.Create("New York, NY", 4, 61, 43), _
Tuple.Create("Chicago, IL", 2, 34, 18), _
Tuple.Create("Newark, NJ", 4, 61, 43), _
Tuple.Create("Boston, MA", 6, 77, 59), _
Tuple.Create("Detroit, MI", 9, 74, 53), _
Tuple.Create("Minneapolis, MN", 8, 81, 61) }
' Display the array of 4-tuples.
Console.WriteLine("{0,41}", "Temperatures")
Console.WriteLine("{0,-20} {1,5} {2,4} {3,4}",
"City", "Month", "High", "Low")
Console.WriteLine()
For Each temperature In temperatures
Console.WriteLine("{0,-20} {1,5} {2,4:N1} {3,4:N1}",
temperature.Item1,
DateTimeFormatInfo.CurrentInfo.GetAbbreviatedMonthName(temperature.Item2 - 1),
temperature.Item3, temperature.Item4)
Next
End Sub
End Module
' The example displays the following output:
' Temperatures
' City Month High Low
'
' New York, NY Mar 61.0 43.0
' Chicago, IL Jan 34.0 18.0
' Newark, NJ Mar 61.0 43.0
' Boston, MA May 77.0 59.0
' Detroit, MI Aug 74.0 53.0
' Minneapolis, MN Jul 81.0 61.0
Comentários
É possível determinar dinamicamente o tipo do componente Item4 de duas maneiras:You can dynamically determine the type of the Item4 component in one of two ways:
Chamando o método
GetTypeno valor retornado pela propriedade Item4.By calling theGetTypemethod on the value that is returned by the Item4 property.Recuperando o Type objeto que representa o Tuple<T1,T2,T3,T4> objeto e recuperando o quarto elemento da matriz que é retornada por seu Type.GetGenericArguments método.By retrieving the Type object that represents the Tuple<T1,T2,T3,T4> object, and retrieving the fourth element from the array that is returned by its Type.GetGenericArguments method.