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YOU ARE HERE: HOME Questions I have a component with 3 parameter and deployed to client side now i changed my dll method which

Real time example for function overloading or method overloading in C#

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I have a component with 3 parameter and deployed to client side now i changed my dll method which takes 4 parameter. How can i deploy this without affecting the client's code?

Answer 1)

This is very common real time scenario to give backward compatibility to your component/product.

Solution in C# / VB.NET:
Instead of adding 4th parameter to the existing method, write new overloaded method with 4 parameters. 

So when old application calls this method, method with 3 parameter will execute.
And method with 4 parameter will be used by new application. That way we can provide backward compatibility to old application.

Solution in VB.NET:
If you are developing using VB.NET language, you can take advantage of optional parameters to accomplish the same.
  Asked in:  Mahindra Satyam, ValueLabs   Expertise Level:  Intermediate
  Last updated on Sunday, 01 December 2013
5/5 stars (23 vote(s))

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