# Composition vs Aggregation in C#

CsharpProgrammingServer Side Programming

## Composition

Under Composition, if the parent object is deleted, then the child object also loses its status. Composition is a special type of Aggregation and gives a part-of relationship.

For example, A Car has an engine. If the car is destroyed, the engine is destroyed as well.

public class Engine {
. . .
}
public class Car {
Engine eng = new Engine();
.......
}

## Aggregation

Aggregation is a directional relation between objects in C#. It is the relationship between objects.

An Employee is associated with a single Department, whereas a Department can have more than one employee. Let us see an example of Employee and Address.

## Example

public class Address {
. . .
}
public class Employee {
}