作者：手机用户2502875921 | 来源：互联网 | 2023-09-18 18:18
如何在 C# 中获取表示 ValueTuple 实例的字符串？
原文:https://www . geeksforgeeks . org/如何获取表示-value tuple-instance-in-c-sharp/
ValueTuple 是 C# 7.0 中引入的一个结构，代表值类型 Tuple。它允许您存储包含多个值的数据集，这些值可能彼此相关，也可能彼此不相关。借助字符串方法，还可以得到一个代表 ValueTuple 对象的字符串。此方法返回一个字符串，该字符串将表示 ValueTuple 对象。这种方法所代表的弦是 () 的形式。
语法:
public override string ToString ();
返回类型:该方法的返回类型为系统。弦。因此，它将返回一个表示 ValueTuple 对象的字符串。
例 1:
// C# program to illustrate
// the use of ToString method
using System;
namespace exampleofvaluetuple {
class GFG {
// Main Method
static void Main(string[] args)
{
// 1-ValueTuple
var v1 = ("Rina");
// Get the value of ValueTuple<T1>
// With the help of ToString method
Console.WriteLine("ValueTuple 1: " + v1.ToString());
// 2-ValueTuple
var v2 = ("Rohan", 25);
// Get the value of ValueTuple<T1, T2>
// With the help of ToString method
Console.WriteLine("ValueTuple 2: " + v2.ToString());
// 3-ValueTuple
var v3 = ("Rima", 22, 2016);
// Get the value of ValueTuple<T1, T2, T3>
// With the help of ToString method
Console.WriteLine("ValueTuple 3: " + v3.ToString());
// 4-ValueTuple
var v4 = ("Mohit", 28, 2014, "Junior Engineer");
// Get the value of ValueTuple<T1, T2, T3, T4>
// With the help of ToString method
Console.WriteLine("ValueTuple 4: " + v4.ToString());
// 5-ValueTuple
var v5 = ("Rohit", 32, 2010, "CSE", "Junior Engineer");
// Get the value of ValueTuple<T1, T2, T3, T4, T5>
// With the help of ToString method
Console.WriteLine("ValueTuple 5: " + v5.ToString());
// 6-ValueTuple
var v6 = ("Sunita", 25, 2015, "ECE",
"Junior Engineer", 102);
// Get the value of ValueTuple<T1, T2,
// T3, T4, T5, T6>
// With the help of ToString method
Console.WriteLine("ValueTuple 6: " + v6.ToString());
// 7-ValueTuple
var v7 = ("Sonu", 22, 2016, "CSE",
"Junior Engineer", 104, "C++");
// Get the value of ValueTuple<T1, T2,
// T3, T4, T5, T6, T7>
// With the help of ToString method
Console.WriteLine("ValueTuple 7: " + v7.ToString());
// 8-ValueTuple
var v8 = ("Susmita", 28, 2014, "Junior Engineer",
109, "Java", ValueTuple.Create("Cricket",
"Football", "Volleyball"));
// Get the value of ValueTuple<T1, T2, T3,
// T4, T5, T6, T7, TRest>
// With the help of ToString method
Console.WriteLine("ValueTuple 8: " + v8.ToString());
}
}
}
Output:
ValueTuple 1: Rina
ValueTuple 2: (Rohan, 25)
ValueTuple 3: (Rima, 22, 2016)
ValueTuple 4: (Mohit, 28, 2014, Junior Engineer)
ValueTuple 5: (Rohit, 32, 2010, CSE, Junior Engineer)
ValueTuple 6: (Sunita, 25, 2015, ECE, Junior Engineer, 102)
ValueTuple 7: (Sonu, 22, 2016, CSE, Junior Engineer, 104, C++)
ValueTuple 8: (Susmita, 28, 2014, Junior Engineer, 109, Java, (Cricket, Football, Volleyball))
例 2:
// C# program to illustrate
// the use of ToString method
using System;
namespace exampleofvaluetuple {
class GFG {
// Main Method
static void Main(string[] args)
{
// Nested Value Tuples
var Emp1 = (Name: "Anu", Age : 23,
Languages: ValueTuple.Create("C++",
"Java", "Python", "C#"));
var Emp2 = (Name: "Boond", Age : 27, Post: "Junior Engineer",
Languages: ValueTuple.Create("C++", "Java"));
var Emp3 = (Name: "Rohit", Age : 25, Post: "HR",
Languages: ValueTuple.Create("C++",
"Java", "C#"));
var Emp4 = (Name: "Mohan", Age : 26, Post: "Junior Engineer",
Languages: ValueTuple.Create("C++", "Java", "Python"));
// Get the value of Nested ValueTuples
// With the help of ToString method
Console.WriteLine("NValueTuple 1: {0}", Emp1.ToString());
Console.WriteLine("NValueTuple 2: {0}", Emp2.ToString());
Console.WriteLine("NValueTuple 3: {0}", Emp3.ToString());
Console.WriteLine("NValueTuple 4: {0}", Emp4.ToString());
}
}
}
Output:
NValueTuple 1: (Anu, 23, (C++, Java, Python, C#))
NValueTuple 2: (Boond, 27, Junior Engineer, (C++, Java))
NValueTuple 3: (Rohit, 25, HR, (C++, Java, C#))
NValueTuple 4: (Mohan, 26, Junior Engineer, (C++, Java, Python))
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