You already correctly passed the string by reference. Note that this is a rare case when passing a reference object by reference makes sense, just because the System.String is
immutable, so you cannot modify the same object by its reference and have to create a new one.
But therefore the method, its signature, still has not
practical sense. Besides, you completely ignore the input string value. It also makes no sense. If you don't need input value, pass by reference using
out
, not
ref
parameter. But then you would better write a string function. If I fix the problem with ignored input, the function could look something like
string Sara(string input) {
return input + ": I'm fine";
}
Different signature; the method could do the same, but readability and usability is better.
—SA