Implement One-To-Many Relationship in C# Class

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace ClientApp
{
    class Person
    {
        List<Cars> Lst = new List<Cars>();
        public string Name { get; set; }
        public string Surname { get; set; }
        public List<Cars> GetSetCar
        {
            get
            {
                return Lst;
            }
            set
            {
                Lst = value;
            }
        }
        public void Print()
        {
            Console.WriteLine("Name:- " + this.Name);
            Console.WriteLine("Surname:- " + this.Surname);
            Console.WriteLine("Car Owns");
            foreach (Cars c in this.GetSetCar)
            {
                Console.WriteLine("Car Name:- " + c.CarName);
            }
        }
    }
    class Cars
    {
        public string CarName { get; set; }
    }
    class Program
    {
        static void Main(string[] args)
        {
            List<Cars> List = new List<Cars>();
            Cars a = new Cars();
            a.CarName = "Alto";
            Cars b = new Cars();
            b.CarName = "Namo";
            List.Add(a);
            List.Add(b);
            Person p = new Person();
            p.Name = "sourav";
            p.Surname = "Kayal";
            p.GetSetCar = List;
            p.Print();
            Console.ReadLine();
        }
    }
}

Here is sample output. At first we are creating two car objects and then we are combining it with a person object.

Implement mother-children relationship

It is another example of a One-To-Many relationship. Here we will implement a relationship between mother and children. The implementation is very similar to the previous one but with a few changes in the Main() function. Have a look at the following code.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace Client
{
    class Mother
    {
        List<childerns> cname = new List<childerns>();
        public string Name { get; set; }
        public List<childerns> GetSetChilden
        {
            set { cname = value; }
            get { return cname; }
        }
        public void Print()
        {
            Console.WriteLine("Mother's Name:- " + this.Name);
            Console.WriteLine("Children are:- ");
            foreach (childerns c in this.GetSetChilden)
            {
                Console.WriteLine(c.CName);
            }
        }
    }
    class childerns
    {
        public List<childerns> getSetName { get; set; }
        public string CName { get; set; }
    }
    class Program
    {
        static void Main(string[] args)
        {
            List<childerns> Lst = new List<childerns>();
            childerns a = new childerns();
            a.CName = "Rahul";
            Lst.Add(a);
            a = new childerns();
            a.CName = "Priyanka";
            Lst.Add(a);
            a.getSetName = Lst;
            Mother m = new Mother();
            m.Name = "Sonia";
            m.GetSetChilden = a.getSetName;
            m.Print();
            Console.ReadLine();
        }
    }
}

Here is sample output.

Conclusion

In this article, we have seen how to implement a One-To-Many relationship in a C# class. In a future article, we will implement a few more relationships among classes. Happy day.