Events and Delegates

//Delegate is handler for the event. Delegate work without event but Event can't work without Delegate because Delegate work as a handler for Event.

Car on = new Car();
private void car_Change()
{
MessageBox.Show("Tankempty");
}
private void sum(int a, int b)
{
MessageBox.Show("Tankempty");
}
private void car_Change1()
{
MessageBox.Show("TankFull");
}

private void button1_Click(object sender, EventArgs e)
{
on.Change += new Car.ChangingHandler(car_Change);
on.Change1 += new Car.ChangingHandler(car_Change1);
on.SetTank(int.Parse(textBox1.Text));



}

//Class

public class Car
{
private int tank;

// delegate declaration
public delegate void ChangingHandler();

// event declaration
public event ChangingHandler Change;
public event ChangingHandler Change1;

public Car()
{

}

public void SetTank(int p)
{
this.tank = p;
// call the event
if (p < 51)
{
Change();
}
else
{
Change1();
}
}

public string GetTank()
{
return this.tank.ToString();
}
}