Open Closed Principles

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

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.

1 Reply

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Dhirendra Misra12y ago
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.