Access individual arrays or element of array when the array is an element of a list C#

Question

I'm pretty new to C# and cannot figure out how to print the first array element of the list. The code to print all array elements is this:

using System.Collections.Generic;

class Program1 {
  static List<string[]> users = new List<string[]>();
  static void Main() {
  users.Add(new string[]{"Ben", "21", "Germany"});
  users.Add(new string[]{"Tom", "32", "Finland"});

  foreach(var person in users){
      Console.WriteLine($"Name: {person[0]}, Age: {person[1]}, Country: {person[2]}");
   }
  }
}

Like how can I only print the first array or the first item in the first array and so on? Any help/tip would be really helpful!

Why not use a class to keep the data for each thing together? — Ňɏssa Pøngjǣrdenlarp
– Ňɏssa Pøngjǣrdenlarp, Commented Dec 7, 2021 at 23:50
users[0] is the first list entry, and users[0][0] is the first item in the first list entry: the name. — Peter B
– Peter B, Commented Dec 7, 2021 at 23:50
@ŇɏssaPøngjǣrdenlarp For now I'm still learning the basics, but I do get what you're saying — EL02
– EL02, Commented Dec 7, 2021 at 23:53
I just updated my answer to show you how to work with classes — Leandro Bardelli
– Leandro Bardelli, Commented Dec 7, 2021 at 23:56

Leandro Bardelli · Accepted Answer · 2021-12-07 23:53:48Z

2

  for(int i = 0; i < users.Lenght();i++) {
      Console.WriteLine($"Name: {users[i][0]}, Age: {users[i][1]}, Country: {users[i][2]}");
   }

Or better with a class:

public class User {
    public string Name {get;set;}
    public int Age {get;set;}
    public string Country {get;set;}
}

and then:

List<User> users = new List<User>();

  foreach(User myUser in users){
      Console.WriteLine(myUser.Name);
      Console.WriteLine(myUser.Age);
      Console.WriteLine(myUser.Country);
   }

edited Dec 7, 2021 at 23:53

answered Dec 7, 2021 at 23:50

Leandro Bardelli

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8 Comments

EL02 Over a year ago

ah seems pretty simple. Kinda prefer the for loop over foreach. Thanks a lot anyway!

Leandro Bardelli Over a year ago

@GL02 foreach is useful for lists or working with classes, I prefer for -for- others things. Or you need for instead foreach if you need to change the property of some item.

Leandro Bardelli Over a year ago

@GL02 If my answer solves your doubt, please don't forget to mark it as correct :)

EL02 Over a year ago

Yeah, I'm coming from C and I still need some practice with classes and such. I had a completely different understanding of lists in c#. Gotta wait 5 more minutes to be marked as correct :)

Leandro Bardelli Over a year ago

@GL02 stackoverflow.com/questions/13685541/…

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