using System;

public class Program

{

    public static void Main()

    {

        string entity = "stockalm/articulo/($articulo)";

        if(entity.IndexOf("$",StringComparison.OrdinalIgnoreCase) != -1)

        {

            string PageParameterKey = string.Empty;

            string entityname = string.Empty;

            int backslashindex = entity.IndexOf("/",System.StringComparison.InvariantCultureIgnoreCase);

            if (backslashindex != -1)

            {

                entityname = entity.Substring(0,backslashindex);

                PageParameterKey = entity.Substring(backslashindex,entity.Length - backslashindex);

            }

            Console.WriteLine(entityname);

            Console.WriteLine(PageParameterKey);

        }

    }

}