Question

How to create a list of objects in C#

Answer 1

using System;
using System.Collections.Generic;
 
public class program
{
    private string name;
    private int age;
    private string programminglanguage;
 
    public program(string name, int age, string programming) {
        this.name = name;
        this.age = age;
        this.programminglanguage = programming;
    }
    
    public string Name {
        get { return name; }
    }
    
    public int Age {
        get { return age; }
    }
    
    public string Programming {
        get { return programminglanguage; }
    }
}
 
public class main 
{
    public static void Main()
    {
 
        List<program> list = new List<program>();
         
        list.Add(new program("Liam", 45, "c#"));
        list.Add(new program("Noah", 39, "java"));
        list.Add(new program("Emma", 51, "python"));
 
        foreach(var item in list)
            Console.WriteLine("{0} - {1} - {2}", item.Name, item.Age, item.Programming);
    }
}

 
 
/*
run:
 
Liam - 45 - c#
Noah - 39 - java
Emma - 51 - python
 
*/

 

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Answer 2

using System;
using System.Collections.Generic;
 
public class User
{
    private string name;
    private short age;
    private string title;

    public User(string name, short age, string title) {
        this.name = name;
        this.age = age;
        this.title = title;
    }

    public string Name {
        get { return name;  }
        set { name = value; }
    }

    public short Age {
        get { return age; }
        set { age = value; }
    }
    
    public string Title {
        get { return title; }
        set { title = value; }
    }
}
 
class Program
{
    static void Main(string[] args)
    {
        List<User> UserList = new List<User>();  
        
        UserList.Add(new User("Robert", 31, "Software Developer"));
        UserList.Add(new User("Mark", 35, "Web Developer"));
        UserList.Add(new User("Jennifer", 27, "Java Developer"));
        UserList.Add(new User("Betty", 35, "Web designer"));
        UserList.Add(new User("Sharon", 41, "Web designer"));
        
        foreach (var user in UserList) {
            Console.WriteLine("User: {0}, Age: {1}, Title: {2}", user.Name, user.Age, user.Title);
        }
        
        UserList[0].Name = "xyz";
        UserList[1].Age = 100;
        UserList[2].Title = "***";
        
        Console.WriteLine();
        
        foreach (var user in UserList) {
            Console.WriteLine("User: {0}, Age: {1}, Title: {2}", user.Name, user.Age, user.Title);
        }
    }
}
 
 
 
/*
run:
 
User: Robert, Age: 31, Title: Software Developer
User: Mark, Age: 35, Title: Web Developer
User: Jennifer, Age: 27, Title: Java Developer
User: Betty, Age: 35, Title: Web designer
User: Sharon, Age: 41, Title: Web designer

User: xyz, Age: 31, Title: Software Developer
User: Mark, Age: 100, Title: Web Developer
User: Jennifer, Age: 27, Title: ***
User: Betty, Age: 35, Title: Web designer
User: Sharon, Age: 41, Title: Web designer
 
*/

 

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