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Csharp Aggregation

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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

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();  
        
}  
    
}  
click below button to copy the code. By - c# tutorial - team

C# examples - Output :

Sonoo G-13 Sec-3 Noida UP


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