Tuple<T1,T2,T3,T4>.Item3 Eigenschaft

Definition

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

public:
 property T3 Item3 { T3 get(); };
public T3 Item3 { get; }
member this.Item3 : 'T3
Public ReadOnly Property Item3 As T3

Eigenschaftswert

T3

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

Beispiele

Im folgenden Beispiel wird ein Array von- Tuple<T1,T2,T3,T4> Objekten definiert, deren Komponenten den Namen einer Stadt, einen Monat des Jahres und den durchschnittlichen höchst-und Tiefstwert 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 wird der Wert der einzelnen Komponenten abgerufen und angezeigt.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

Der Typ der Item3 Komponente kann auf zwei Arten dynamisch bestimmt werden:You can dynamically determine the type of the Item3 component in one of two ways:

  • Durch Aufrufen der- GetType Methode für den Wert, der von der-Eigenschaft zurückgegeben wird Item3 .By calling the GetType method on the value that is returned by the Item3 property.

  • Durch Abrufen des Type Objekts, das das Tuple<T1,T2,T3,T4> Objekt darstellt, und Abrufen des dritten Elements aus dem Array, das von seiner-Methode zurückgegeben wird Type.GetGenericArguments .By retrieving the Type object that represents the Tuple<T1,T2,T3,T4> object, and retrieving the third element from the array that is returned by its Type.GetGenericArguments method.

Gilt für: