Open Closed Principles

Question

How to keep Open closed Principles between methods where only parameters different.

For example :

interface IDo()

{

void Do(string a)
}

Class DoFirst:IDo{}

if we need to extend parameters of the same function (void Do(string a,int b))

How to apply Open Closed Principle?

Thanks in advance

Dhirendra Misra · Answer

Hello What I understood from your question that you want to extend a method by adding the parameters. I just had an idea but it not very flexible. You can pass Tuple as parameter with some extra parameters which can used in future if requirement get changes. It is abiding by some extent of OCP rule. Example namespace Corner { interface IDTask { void doTask(Tuple para); } class OpenClosePrinciple : IDTask { public void doTask(Tuple param) { if (param.Item1 != null) Console.WriteLine(param.Item1.ToString()); if (param.Item2 != null) Console.WriteLine(param.Item2.ToString()); if (param.Item3 != null) Console.WriteLine(param.Item3.ToString()); if (param.Item4 != null) { //Add other checks to handle it for future requirement Console.WriteLine(param.Item4.ToString()); } } } } //Main function: How to call it string [] arrBlank = {}; Tuple objT = new Tuple (1 Dhirendra 2 arrBlank); OpenClosePrinciple obj = new OpenClosePrinciple(); obj.doTask(objT); Console.Read(); Hope it will give help you.