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// Error! Cannot directly access private members

// from an object!

Employee emp = new Employee();

emp.empName = "Marv";

}

If you want the outside world to interact with your private string representing a worker’s full

name, tradition dictates defining an accessor (get method) and a mutator (set method). For exam-

ple, to encapsulate the empName field, you could add the following public members to the existing

Employee class type:

class Employee

{

// Field data.

private string empName;

...

// Accessor (get method)

public string GetName()

{

return empName;

}

// Mutator (set method)

public void SetName(string name)

{

// Remove any illegal characters (!,@,#,$,%),

// check maximum length or case before making assignment.

empName = name;

}

}

This technique requires two uniquely named methods to operate on a single data point. To

illustrate, update your Main() method as follows:

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8849CH05.qxd  10/22/07  1:34 PM  Page 166

---

static void Main(string[] args)

{

Console.WriteLine("***** Fun with Encapsulation *****\n");

Employee emp = new Employee("Marvin", 456, 30000);

emp.GiveBonus(1000);

emp.DisplayStats();