How to use multiple optional parameters in C# [duplicate]

Question

I have a method like this:

public static void MyMethod(int a, String opt1 = null, byte[] opt2 = null)
{
//code 
}

I want to call MyMeythod once using opt1, and once using opt2;

MyMethod(3,"param"); call worked but

MyMethod(3,new byte[]); doesn't compile

Is there a way to do this or should I pass opt1 explicitly null

learn.microsoft.com/en-us/dotnet/csharp/programming-guide/… in your case MyMethod(a: 3, opt2: new byte[]); — Dmitrii Bychenko
– Dmitrii Bychenko, Commented Aug 21, 2018 at 20:26
In C# 7.3 you can write: MyMethod(opt2: new byte[] { }, a: 3) — JohnyL
– JohnyL, Commented Aug 21, 2018 at 20:31

stuartd · Accepted Answer · 2018-08-21 20:26:14Z

3

Use the name:

MyMethod(3, opt2: new byte[]);

answered Aug 21, 2018 at 20:26

stuartd

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Comments

JohnyL · Accepted Answer · 2018-08-21 20:35:06Z

1

In C# 7.3 you can also use another ordering:

MyMethod(opt2: new byte[] { }, a: 3)

answered Aug 21, 2018 at 20:35

JohnyL

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Alright Thank you!

@JamalSalman You're welcome!