In previous articles we saw how to implement various relationships among C# classes. You can read them here:
One to one relationship in C# class
Implement one to many relationship in C# class.
Many to One Relationship in C# Class
In this article we will see how to implement a Many-To-Many relationship in a C# class. Let's explain a few scenarios where a Many-To-Many relationship is relevant.
The relationship between a Cricket match and Cricketer is one example of a Many-To-Many relationship. One Cricket match is played by many Cricketers and one Cricketer takes part in many Cricket matches.
Let's implement this example using a C# class.
Relationship between Cricketer and matches
As we have explained many Cricketers play in a single Cricket match and one Cricketer takes part in multiple matches. For the sake of simplicity we have used only a Cricketer class. We can use a Matches class in the same fashion. Have a look at the following code.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace Client
{
class Cricketer
{
List<Matches> MLst = new List<Matches>();
List<Cricketer> CList = new List<Cricketer>();
public string Name { get; set; }
public List<Matches> getSetMatch
{
get { return MLst; }
set { MLst = value; }
}
public List<Cricketer> getsetCricketer
{
get { return CList; }
set { CList = value; }
}
public void Print()
{
Console.WriteLine("-----Cricketer Name---- ");
foreach (Cricketer c in CList)
{
Console.WriteLine(c.Name);
}
Console.WriteLine("-----Matches Played----");
foreach (Matches m in MLst)
{
Console.WriteLine(m.MatchVs);
}
}
}
class Matches
{
List<Cricketer> Lst = new List<Cricketer>();
public string MatchVs { get; set; }
public void Print()
{
Console.WriteLine("Match Verses");
foreach (Cricketer c in Lst)
{
Console.WriteLine("Cricketer Name:- " + c.Name);
}
}
}
class Program
{
static void Main(string[] args)
{
List<Cricketer> CList = new List<Cricketer>();
List<Matches> MList = new List<Matches>();
Cricketer c = new Cricketer();
c.Name = "Sourav Ganguly";
CList.Add(c);
c = new Cricketer();
c.Name = "Sachin Tendulkar";
CList.Add(c);
//Add matches
Matches m = new Matches();
m.MatchVs = "India-Sri Lanka";
MList.Add(m);
//Add another match
m = new Matches();
m.MatchVs = "India - Bangladesh";
MList.Add(m);
c.getsetCricketer = CList;
c.getSetMatch = MList;
c.Print();
Console.ReadLine();
}
}
}
Here is sample output:
![Many to Many Relationship]()
Conclusion
In this article we have learned how to implement a Many-To-Many relationship in a C# Class. Hope you have understood the concept. Though it is a very rare scenario where a Many-To-Many relationship is relevant. Happy learning.