How to return arrays from a function using ref keyword....?

Agree with @Amit Gupta, refer below code output will be 3 then 42. using System; public class Test { private static void assign(ref int i) { i = 42; } public static void Main() { var vars = new [] { 1,2,3,4 }; Console.WriteLine(vars[2]); assign(ref vars[2]); Console.WriteLine(vars[2]); } }

When ref keyword is used, both the source and referenced object will have the same impact. You can simply use void with ref keyword as its parameter