visual C#

I creating a program that ask the user to enter a name, and it outputs a nickname to the user. everything is working well with the program, I just have one problem. When the user types in their name they are receiving a different nickname everytime. The nickname that is displayed should be the same everytime that the same name is inputed. For example: if the user inputs "Bravo" and his output is "Boy Wonder" then "Boy Wonder is what the output should be everytime that Bravo is entered, and the problem I am having now is that if I were to enter "Bravo" the nickname that is outputted is never the same. attahced is a snap shot of my code I have now

8 public class Program public static void Main() :2 13 5 L6 L7 18 string userInput; Console.WriteLine("Please enter your name to receive a nick name...") string[] firstick new string [30] { "Wild Thing", "Crazy Eyes", "Goofy Goober", "Shady Subject", "Smelly Thing", "Lost One", "Smarty", "Nosey", "Clumsy", "Grumpy", "Happy Feet", "Smiley", "Insane in the membrane", "Sleepy", "BOSS", "Angry One", "Tough One", "Phyco One", "Loving One", "Sneaky", "Caring One", "Crybaby", "Chosen One", "The GOAT", "Annoying One", "Softy", "Scary", "Funky","KooKoo", "Amazing One" Random rannew Random); 23 24 25 Console.Write("insert name: " //create list of objects //input nickname 27 29 userInput-Console.ReadLine); Console.WriteLine("From this point foward you will go by: (0), firstNick[ran.Next (,29)1