Tuple<T1,T2,T3,T4>.Item2 Tuple<T1,T2,T3,T4>.Item2 Tuple<T1,T2,T3,T4>.Item2 Tuple<T1,T2,T3,T4>.Item2 Property

Definition

Ruft den Wert der zweiten Komponente des aktuellen Tuple<T1,T2,T3,T4>-Objekts ab.Gets the value of the current Tuple<T1,T2,T3,T4> object's second component.

public:
 property T2 Item2 { T2 get(); };
public T2 Item2 { get; }
member this.Item2 : 'T2
Public ReadOnly Property Item2 As T2

Eigenschaftswert

T2 T2 T2 T2

Der Wert der zweiten Komponente des aktuellen Tuple<T1,T2,T3,T4>-Objekts.The value of the current Tuple<T1,T2,T3,T4> object's second component.

Beispiele

Das folgende Beispiel definiert ein Array von Tuple<T1,T2,T3,T4> Objekte, deren Komponenten den Namen einer Stadt, einen Monat des Jahres und die durchschnittlichen hohen und niedrigen Temperaturen für diesen Monat enthalten.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. Anschließend ruft ab und zeigt den Wert der einzelnen Komponenten.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

Hinweise

Sie können den Typ des dynamisch bestimmen die Item2 -Komponente in zwei Arten:You can dynamically determine the type of the Item2 component in one of two ways:

  • Durch Aufrufen der GetType Methode auf dem Wert, der von zurückgegeben wird das Item2 Eigenschaft.By calling the GetType method on the value that is returned by the Item2 property.

  • Durch Abrufen der Type Objekt, das darstellt der Tuple<T1,T2,T3,T4> Objekt und das zweite Element aus dem Array, das von zurückgegebene Abrufen der Type.GetGenericArguments Methode.By retrieving the Type object that represents the Tuple<T1,T2,T3,T4> object, and retrieving the second element from the array that is returned by its Type.GetGenericArguments method.

Gilt für: