使用LINQ将列表转换为CSV字符串

public class Person
{
    public string Name { get; set; }
    public int Age { get; set; }
}

List<Person> people = new List<Person>
{
    new Person { Name = "John", Age = 25 },
    new Person { Name = "Jane", Age = 30 },
    new Person { Name = "Mike", Age = 35 }
};

string csv = string.Join(",", people.Select(p => $"{p.Name},{p.Age}"));

Console.WriteLine(csv);

John,25,Jane,30,Mike,35