C# Base class constructor arguments

Question

I learning C#. I want to see what is the best way to implement inheritance. I have a Employee base class and a PartTime derived class. Employee class only receives First and Last name and has a method to print full name.

I want to know what is the proper way to pass First and last name so that when I just call PartTime class I should be also able to print full name from the calling program. At the moment it is showing blank as full name:

class Program
{
    static void Main(string[] args)
    {
        Employee emp = new Employee("John", "Doe");
        // emp.PrintFullName();

        PartTime pt = new PartTime();

        float pay=pt.CalcPay(10, 8);
        pt.PrintFullName();  

        Console.WriteLine("Pay {0}", pay);
        Console.ReadKey();
    }
}

public class Employee
{
    string _firstName;
    string _last_name;

    public Employee(string FName, string LName)
    {
        _firstName = FName;
        _last_name = LName;
    }

    public Employee() { } 

    public void PrintFullName()
    {
        Console.WriteLine("Full Name {0} {1} ", _firstName, _last_name);
    }
}

public class PartTime : Employee
{
    public float CalcPay(int hours, int rate)
    {
        return hours * rate;
    }
}

Answer 1

You can call the base class constructor from you derived class like this:

public class PartTime : Employee
{
    public PartTime(string FName, string Lname)
         : base(FName, LName)
    { }
}

and then create it,

PartTime pt = new PartTime("Part", "Time");

Answer 2

Try this:

public class Employee
{
    public string FirstName { get; set; }
    public string LastName { get; set; }

    public Employee(string firstName, string lastName)
    {
        FirstName = firstName;
        LastName = lastName;
    }

    //method implementations removed for clarity

}

public class PartTime:Employee
{
    public PartTime(string firstName, string lastName)
        : base(firstName, lastName)
    {

    }
}

Note that your base constructor will run before any code in your derived constructor, should you need further initialization logic in the PartTime class.