如何在C＃中获取ValueTuple的第五个元素？

ValueTuple是C＃7.0中引入的结构，表示值类型Tuple。它允许您存储一个数据集，该数据集包含可能彼此相关或不相关的多个值。 Item5属性用于获取给定值元组的第五个未命名元素。它适用于每个值元组，例如5-ValueTuple，6-ValueTuple等。

句法：

public T5 Item5;

在此，T5是ValueTuple <>结构的字段值。此ValueTuple <>可以是5-ValueTuple，6-ValueTuple，或7-ValueTuple或8-ValueTuple。

示例1：在下面的代码中，您可以看到我们正在访问每个值元组的第五个元素。

// C# program to illustrate how to get
// the fifth element of value tuple
using System;
  
class GFG {
  
    // Main Method
    static public void Main()
    {
  
        Console.WriteLine("C# Topics:");
  
        // Creating a value tuple with five elements
        var ValTpl5 = ValueTuple.Create("Identifiers", "Data Types",
                    "Keywords", "Access Modifiers", "Operators");
  
        // Accessing the fifth element of 
        // 5-ValueTuple using Item property
        Console.WriteLine(ValTpl5.Item5);
  
        // Creating a value tuple with six elements
        var ValTpl6 = ValueTuple.Create("Nullable Types", "Class",
            "Structure", "Indexers", "Switch Statement", "Loops");
  
        // Accessing the fifth element of 
        // 6-ValueTuple using Item property
        Console.WriteLine(ValTpl6.Item5);
  
        // Creating a value tuple with seven elements
        var ValTpl7 = ValueTuple.Create("Inheritance ", "Constructors", 
                        "Encapsulation", "Abstraction", "Static Class",
                                    "Partial Classes", "this keyword");
  
        // Accessing the fifth element of 
        // 7-ValueTuple using Item property
        Console.WriteLine(ValTpl7.Item5);
  
        // Creating a value tuple with eight elements
        var ValTpl8 = ValueTuple.Create("Methods", "Method Hiding",
                        "Optional Parameters", "Anonymous Method",
                "Partial Methods", "Local Function", "Delegates",
                                                    "Destructors");
  
        // Accessing the fifth element of 
        // 8-ValueTuple using Item property
        Console.WriteLine(ValTpl8.Item5);
    }
}

输出：

C# Topics:
Operators
Switch Statement
Static Class
Partial Methods

范例2：

// C# program to get the hash code of
// fifth element in a value tuple
using System;
  
class GFG {
  
    // Main method
    static public void Main()
    {
  
        // Creating 5-ValueTuple
        var My_Value_Tuple = (1004, "Rohit", "Computer Science",
                                                     24, "C#");
  
        // Accessing fifth element of the value tuple
        Console.WriteLine("Favourite programming Language: {0}",
                                          My_Value_Tuple.Item5);
  
        // Getting the hashcode of the fifth element
        Console.WriteLine("Hash Code: {0}",
           My_Value_Tuple.Item5.GetHashCode());
    }
}

输出：

Favourite programming Language: C#
Hash Code: -849950870