Method Hidding in C#

Method Hiding is a process in which we hide base Class Members and presents the derived class members. Use the new keyword to hide a Base Class member, you will get a compiler warning if you miss the new keyword.
Code Example without Hiding of method :-
In the below example we use a Student Base Class and two child classes RegularStudent and DistanceStudent which are inherits from Student base class.We want to print full name of the students so here we use a Method PrintDetails() used for printing the full name of students.


                public class Stdent

                {

                public string _firstname;

                public string _lastname;

                public void PrintDetails()

                {

                Console.WriteLine(_firstname + " " + _lastname);


                }

                }

                public class  RegularStudent : Student

                {



                }

                public class  DistanceStudent : Student

                {


                }

                class Program

                {

                static void Main(string[] args)

                {

                RegularStudent objRegularStudent = new RegularStudent();

                objRegularStudent._firstname = "John";

                objRegularStudent._lastname = "Karter";

                objRegularStudent.PrintDetails();

                DistanceStudent objDistanceStudent = new DistanceStudent();

                objDistanceStudent._firstname = "Marry";

                objDistanceStudent._lastname = "Martin";

                objDistanceStudent.PrintDetails();

                Console.ReadKey();

                }

                }

Output of the Program
John Karter
Marry Martin

Code Example with method Hidding


                    public class Student

                    {

                        public string _firstname;

                        public string _lastname;

                        public void PrintDetails()

                        {

                                Console.WriteLine(_firstname + " " + _lastname);


                        }

                    }

                    public class  RegularStudent : Student

                    {


                    public new void PrintDetails()

                    {

                    Console.WriteLine(_firstname + " " + _lastname + "-Regular Student");


                    }

                    }

                    public class  DistanceStudent : Student

                    {


                    }

                    class Program

                    {

                    static void Main(string[] args)

                    {

                    RegularStudent objRegularStudent = new RegularStudent();

                    objRegularStudent._firstname = "John";

                    objRegularStudent._lastname = "Karter";

                    objRegularStudent.PrintDetails();

                    Student objStudent = new DistanceStudent();

                    objStudent._firstname = "Marry";

                    objStudent._lastname = "Martin";

                    objStudent.PrintDetails();

                    Console.ReadKey();

                    }

                    }

In the above code we hide the Base class method with new keyword used in derived class method.
Different ways to invoke a hidden base class member from derived class.

Use Base Keyword for call to base class methods.
Cast Child type to parent type and invoke the hidden methods.
BaseClass reference variable used to point the child class.