public ModeloNegocio.Sesion getSesionId(int sesion_id)
        {
            Cmd = new SqlCommand();
            Cmd.Connection = Conn;
            ModeloNegocio.Sesion sesion = new ModeloNegocio.Sesion();

            try
            {

                Cmd.CommandType = CommandType.StoredProcedure;
                Cmd.CommandText = "PA_GET_SESIONES_ID";
                Cmd.Parameters.Add("@sesion_id", SqlDbType.Int).Value = sesion_id;

                Dtr = Cmd.ExecuteReader();

                while (Dtr.Read())
                {

                    sesion.Id = Convert.ToInt32(Dtr["id"]);

                    sesion.NumSesion = Dtr["nrosesion"].ToString();
                    sesion.Tema_id = Convert.ToInt32(Dtr["tema_id"]);

                   // if (DBNull.Value.Equals(Dtr["created_at"])) sesion.Created_at = DateTime.Now; else sesion.Created_at = DateTime.Parse(Dtr["created_at"].ToString());

                   // if (DBNull.Value.Equals(Dtr["updated_at"])) sesion.Updated_at = DateTime.Now; else sesion.Updated_at = DateTime.Parse(Dtr["updated_at"].ToString());

                }
                Conn.Close();

                return sesion;
            }
            catch (Exception e)
            {
                Console.WriteLine("{0} Exception caught.", e);
                return sesion;
            }
        }
        public ModeloNegocio.Sesion getSesionId(int sesion_id)
        {
            Cmd            = new SqlCommand();
            Cmd.Connection = Conn;
            ModeloNegocio.Sesion sesion = new ModeloNegocio.Sesion();

            try
            {
                Cmd.CommandType = CommandType.StoredProcedure;
                Cmd.CommandText = "PA_GET_SESIONES_ID";
                Cmd.Parameters.Add("@sesion_id", SqlDbType.Int).Value = sesion_id;

                Dtr = Cmd.ExecuteReader();

                while (Dtr.Read())
                {
                    sesion.Id = Convert.ToInt32(Dtr["id"]);

                    sesion.NumSesion = Dtr["nrosesion"].ToString();
                    sesion.Tema_id   = Convert.ToInt32(Dtr["tema_id"]);

                    // if (DBNull.Value.Equals(Dtr["created_at"])) sesion.Created_at = DateTime.Now; else sesion.Created_at = DateTime.Parse(Dtr["created_at"].ToString());


                    // if (DBNull.Value.Equals(Dtr["updated_at"])) sesion.Updated_at = DateTime.Now; else sesion.Updated_at = DateTime.Parse(Dtr["updated_at"].ToString());
                }
                Conn.Close();

                return(sesion);
            }
            catch (Exception e)
            {
                Console.WriteLine("{0} Exception caught.", e);
                return(sesion);
            }
        }