怎么把对象中的变量存到hashtable中？

Question

本人c#初学者，想要把多个对象存入到哈希表中，哈希表的key是对象的一个变量，哈希表的value是对象，请问应该怎么写？

Answer 1

请注意：以下是.NET 6(C# 10的语法)。
示例代码：

using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;

var students = new List<Student>
{
    new(1, "Rector", 18),
    new(2, "James", 20),
    new(3, "Curry", 22)
};
var ht = new Hashtable(students.ToDictionary(x => x.Id, x => x));
foreach (DictionaryEntry entry in ht)
{
    Console.WriteLine($"{entry.Key}==>>{entry.Value}");
}

public record Student(int Id, string Name, int Age);

运行结果：

3==>>Student { Id = 3, Name = Curry, Age = 22 }
2==>>Student { Id = 2, Name = James, Age = 20 }
1==>>Student { Id = 1, Name = Rector, Age = 18 }