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C# - Same Abstract Method in Multiple Classes Example

In this example, we will learn how to implement the same abstract method in multiple classes using C# program?
Submitted by Nidhi, on October 14, 2020 [Last updated : March 21, 2023]

An abstract class contains only method declarations. In our program, we will implement the same abstract method in multiple classes.

C# program to implement the same abstract method in multiple classes

The source code to implement the abstract method with the same name in multiple classes is given below. The given program is compiled and executed successfully on Microsoft Visual Studio.

//C# program to implement the same abstract method 
//in multiple classes.

using System;

abstract class Abs
{
    //Method Declaration
    public abstract void Method();
}

class Sample1 : Abs
{
    //Method definition
    public override void Method()
    {
        Console.WriteLine("Sample1:Method() called");
    }
}

class Sample2 : Abs
{
    //Method definition
    public override void Method()
    {
        Console.WriteLine("Sample2:Method() called");
    }
}


class Program
{
    public static void Main(String[] args)
    {
        Abs M;

        M = new Sample1();
        M.Method();

        M = new Sample2();
        M.Method();
    }
}

Output

Sample1:Method() called
Sample2:Method() called
Press any key to continue . . .

Explanation

Here, we created an abstract class Abs that contains the declaration of method Method(). Then we created two classes Sample1, Sample2. Then we implemented the Method() in both classes.

Now look to the Program class, it contains the Main() method, the Main() method is the entry point for the program. Here we created the reference M of Abs abstract class and then initialized M by objects of all classes one by one and call implemented methods that will print corresponding messages on the console screen.

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