How to handle nullable string as a function parameter

Question

I have function with parameters as given below.

public void myfunction(int a, string b){}

Can we call this function by passing only first parameter and second parameter is optional(nullable string)?

myfunction(5);

If yes then how.

Answer 1

Actually your question is little bit confusing by the term nullable in the title, mean time you are looking for a method having default parameters/Optional parameters. which can be written as like the following:

public void myfunction(int a, string b = ""){}

So that you can call like this myfunction(5); or like myfunction(5,null); or even this: myfunction(5,"Something");

Answer 2

just overload the function as follows:

public void myfunction(int a, string b)
{
   //do stuff
}

public void myfunction(int a)
{
  myfunction(a,string.empty);
}

then call

myFuntion(5);

Note: It's best practice to use string.empty instead of null so have shown that in my example.