How can you use optional parameters in C#?

Question

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?

optional-parameters

3 years ago by Kajalsi45d

2 Answers

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**akshay1995** · Answer 1 · 2021-07-27T12:40:40

akshay1995



public void SomeMethod(int a, int b = 0)

{

   //some code

}

3 years ago

**RoliMishra** · Answer 2 · 2021-07-29T12:00:48

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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How can you use optional parameters in C#?

2 Answers

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