C# Aggregation - c# - c# tutorial - c# net
C# Aggregation
What is C# Aggregation ?
- In C#, aggregation is a process in which one class defines another class as any entity reference.
- It is another way to reuse the class.It is a form of association that represents HAS-A relationship.
C# aggregation
Example
- Let's see an example of aggregation where Employee class has the reference of Address class as data member. In such way, it can reuse the members of Address class.
using System;
public class Address
{
public string addressLine, city, state;
public Address(string addressLine, string city, string state)
{
this.addressLine = addressLine;
this.city = city;
this.state = state;
}
}
public class Employee
{
public int id;
public string name;
public Address address;//Employee HAS-A Address
public Employee(int id, string name, Address address)
{
this.id = id;
this.name = name;
this.address = address;
}
public void display()
{
Console.WriteLine(id + " " + name + " " +
address.addressLine + " " + address.city + " " + address.state);
}
}
public class TestAggregation
{
public static void Main(string[] args)
{
Address a1=new Address("G-13, Sec-3","Noida","UP");
Employee e1 = new Employee(1,"Sonoo",a1);
e1.display();
}
}
C# examples - Output :
Sonoo G-13 Sec-3 Noida UP