using System;

using System.Linq;

using System.Collections;

using System.Collections.Generic;

public record MyDto

{

    public string Name { get; set; }

}

​

public class Program

{

    public static void Main()

    {

        List<MyDto> dtos = [new() { Name = "first" }, new() { Name = "second" }];

        dtos.Select(_ => _.Name = "hello");

        dtos.ForEach(_ => Console.WriteLine(_.Name));

    }

}