private void TestDynamicBinding(int val)
{
Person pers;
//static bindning to Person (early binding)
//Depending on the value of "choice", the variable pers will dynamically refer to
//different type of object wihin the inheritance hierarchy (dynamic binding or late binding)
switch ((val))
{
case 1:
pers = new Chief();
break;
case 2:
pers = new Salesman();
break;
case 3:
pers = new Employee();
break;
default:
pers = new Person();
break;
}
}
private void btnIsA_Click(object sender, EventArgs e)
{
Chief boss = new Chief();
boss.FirstName = "Nanna";
string strText = string.Format("Chief is a Person who has the first name: {0}. ", boss.FirstName);
MessageBox.Show(strText, "Is - a relationship");
}
private void btnDynamicBin_Click(object sender, EventArgs e)
{
Person per1 = new Person(); //1
Person per2 = new Employee(); //2
per2 = new Chief(); //3
Salesman per3 = new Salesman(); //4
TestaDnyanmiskBinding(2);
TestaDnyanmiskBinding(3);
TestaDnyanmiskBinding(4);
}
private void btnChief_Click(object sender, EventArgs e)
{
Chief departmentChief = new Chief();
departmentChief.FirstName = "Nisse";
//klassen Person
departmentChief.SurName = "Lundström";
//klassen Person
departmentChief.Salary = 55000;
//klassen Anställd
departmentChief.Bonus = 120000;
//klassen Chief
MessageBox.Show("The boss earns: " + departmentChief.TotalIncome.ToString() + " a month!", "Test Program");
}
private void TestaDnyanmiskBinding(int choice)
{
Person pers; //static binding to Person
//Depending on the value of choice, pers will refer to
//different types of object (within the hierarchy)
switch (choice)
{
case 1:
pers = new Chief();
break;
case 2:
pers = new Salesman();
break;
case 3:
default:
pers = new Person();
break;
}
MessageBox.Show(pers.ToString());
}