I have one [Operation Contract] where described function which registers a new user in WCF Service:
[OperationContract] boolean Register(string name, string password); This function accepts two parameters name and password of user. How I can extend these parameters in the future, for example If I want to add second name for register function or more parameters?
I can do the following:
boolean Register(string name, string password, string secondName); But if params are more 20?
If you don't mind breaking the contract for the operation that you want to change, you could combine some of the (more than 20) parameters into a class.
This is generally good practice when writing methods that have a lot of parameters (see also What's the best way to refactor a method that has too many (6+) parameters?).
You may probably need to add a [DataContract] attribute to that class then, though, if you want to use it in WCF calls.
By using the params keyword, you can specify a method parameter that takes a variable number of arguments. like-
boolean Register(params string[] list);
