Produce Output for console using ADO

SqlConnection conn = new SqlConnection("SOMEDATABASE");
SqlCommand command = new SqlCommand("p_Date_sel", conn);
SqlParameter parameter = new SqlParameter();
parameter.ParameterName = "@DateID";


//You are missing following line.
<big>parameter.Value = p;</big>

command.CommandType = CommandType.StoredProcedure;
command.Parameters.Add(parameter);

conn.Open();
SqlDataReader reader = command.ExecuteReader();
while (reader.Read())
{
    Console.WriteLine(reader["Dates"]);
}
conn.Close();

class Program
    {
        private int _dateID;
        private int _dateTypeID;
        private DateTime _date;
        private string _name;
        private string _notes;


        public Program(int dateID) {
            _dateID = dateID;
        }
        public Program(int datetypeID,DateTime date,string name,string notes){
        
            _dateTypeID = datetypeID;
            _date = date;
            _name = name;
            _notes = notes;
        }

        

       public int dateID { get; set; }
       public int dateTypeID { get; set; }
       public DateTime date { get; set; }
       public string name { get; set; }
       public string notes { get; set; }
       //suppose to retrieve all the data from DateID and show all
       // the attributes in table Date
       //Am i doing this the right way?


        
        public void LoadData(int p)
        {
           
            SqlConnection conn = new SqlConnection("Data Source=mycbj01psql03\\sandbox01;Initial Catalog=DBRMS;Integrated Security=True");
            SqlCommand command = new SqlCommand("p_Date_sel", conn);
            SqlParameter parameter = new SqlParameter();
            parameter.ParameterName = "@DateID";
            parameter.Value = p;// just added this 

            command.CommandType = CommandType.StoredProcedure;
            command.CommandText = "p_Date_sel";
            
            command.Parameters.Add(parameter);


            conn.Open();
            SqlDataReader reader = command.ExecuteReader();
            while (reader.Read())
            {
                Console.WriteLine(reader["Dates"]); //error on this line 
            }
            conn.Close();

           }
    }

public static void Main(string[] args)
        {
            /*No 56 is already in the table with all the parameters,
              i cant even show the dateID*/
            Program p = new Program(56); 
            p.LoadData(56);
            
            Console.WriteLine("DateID = " + "" + p.dateID);
            Console.WriteLine("DateTypeID = " + "" + p.dateTypeID);
            Console.WriteLine("Date = " + "" + p.date);
            Console.WriteLine("Name = " + "" + p.name);
            Console.WriteLine("Notes = " + "" + p.notes);
            
            Console.ReadLine();
        }