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How can you use optional parameters in C#?

We're building a web API that's programmatically generated from a C# class. The class has method GetFooBar(int a, int b) and the API has a method GetFooBar taking query params like &a=foo &b=bar.

The classes needs to support optional parameters, which isn't supported in C# the language. What's the best approach?

2 Answers


public void SomeMethod(int a, int b = 0)
//some code
Another option is to use the params keyword

public void DoSomething(params object[] theObjects)
foreach(object o in theObjects)
// Something with the Objects…

Called like...

DoSomething(this, that, theOther);

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