What is the C # equivalent of Oracle PL / SQL COALESCE?

Question

Is there one statement or one line way to do something like this where the string s is declared and the first non-zero value in the expression is assigned?

//pseudo-codeish
string s = Coalesce(string1, string2, string3);

or, more generally,

object obj = Coalesce(obj1, obj2, obj3, ...objx);

Answer 1

As Darren Kopp said.

Your expression

object obj = Coalesce(obj1, obj2, obj3, ...objx);

You can write like this:

object obj = obj1 ?? obj2 ?? obj3 ?? ... objx;

to put it in other words:

var a = b ?? c;

equivalently

var a = b != null ? b : c;

Answer 2

operator .

string a = nullstring ?? "empty!";