Normal Person in C#

shades-of-fsharp-person.cs

class Person {
  private readonly string firstName;
  private readonly string lastName;
  public Person(string firstName, string lastName) {
    this.firstName = firstName;
    this.lastName = lastName;
  }

  public string FirstName { get {return this.firstName; } }
  public string LastName { get {return this.lastName; } }

  private string calculateFullName() {
    return this.firstName + " " + this.lastName;
  }

  public string FullName { get {return this.calculateFullName(); } }
}