I have got a method that i want only one user can access at a time. I really don't know how to do this.
public static int add(int a, int b)
int c = a+b;
and I am calling this method when a user enters data into two text boxes and click the submit button on a asp.net webpage. I don't want other users access to be denied. They should be kept in some sort of queue and when method is finished serving one user next user should be served.