Use of Constructor in Abstract Class

Question

what are the benefit of constructors or destructors in abstract class? Can be call constructor through explicitly or derived class?

Sabyasachi Mishra · Answer

Anand Jee You can can't use constructor of Abstract Class directly as you can't create object of Abstract class.But you can achieve it using Derived class in this way abstract class AbsBaseClass { //A Non abstract method public int AddTwoNumbers(int Num1, int Num2) { return Num1 + Num2; } public AbsBaseClass() { Console.WriteLine("I am in Abstract class Constructor "); } public abstract int MultiplyTwoNumbers(int Num1, int Num2); } //A Child Class of absClass class DerivedClass:AbsBaseClass { public DerivedClass() { Console.WriteLine("I am in derived class Constructor "); } [STAThread] static void Main(string[] args) { //AbsBaseClass obj = new AbsBaseClass(); //Error as we can't create object of Abstract class DerivedClass calculate = new DerivedClass(); int added = calculate.AddTwoNumbers(10,20); int multiplied = calculate.MultiplyTwoNumbers(10,20); Console.WriteLine("Added : {0}, Multiplied : {1}", added, multiplied); Console.ReadLine(); } //using override keyword,implementing the abstract method public override int MultiplyTwoNumbers(int Num1, int Num2) { return Num1 * Num2; } } Accept all the answers that helps you. Hope that helps.

Use of Constructor in Abstract Class

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