CSharp - Partially implement abstract class

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Introduction

If a class extends an abstract class, it has to implement all the abstract methods or itself will be marked as abstract.

If you want to create objects of a class, the class needs to be completed.

If the child class cannot provide implementation of all the abstract methods, it should mark itself with the keyword abstract. 

abstract class MyAbstractClass
{
   public abstract void InCompleteMethod1();
   public abstract void InCompleteMethod2();
}
abstract class ChildClass : MyAbstractClass
{
   public override void InCompleteMethod1()
   {
      Console.WriteLine("Making complete of InCompleteMethod1()");
   }
}

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