Converting strings to enumerators

It falls apart at:

sPosition = Convert.ToString(position);

and:

Here's the code:

namespace ConsoleApplication1

class Player

public enum Position : int { GK, RB, LB, CB, RM, LM, CM, ST };

public Position position;

public string sPosition;

public string firstName;

public string lastName;

public int squadNumber;

public string sSquadNumber;

public void SetDetails(Position posn, int sNumber, string fName, string lName)

sPosition = Convert.ToString(position);

sSquadNumber = Convert.ToString(squadNumber);

public string ToDetailsString()

string s = position + " " + sSquadNumber + " " + firstName + " " + lastName + " ";

return s;

class Program

static void Main(string[] args)

Console.Write("Enter player's position: ");

string a = Console.ReadLine();

Player.Position e = Convert.ToInt32(a);

Console.Write("Enter player's number: ");

int b = Convert.ToInt32(Console.ReadLine());

Console.Write("Enter player's first name: ");

string c = Console.ReadLine();

Console.Write("Enter player's surname: ");

string d = Console.ReadLine();

Player p1 = new Player();

Console.WriteLine("Player: " + p1.ToDetailsString());

Console.Read();