sql reader

public DataTable ExecuteRreader(string sp_name, Dictionary<string, object> parameters)
    {
        using (SqlConnection sqlConnection = new SqlConnection(connectionString))
        {
            SqlCommand sqlCommand = new SqlCommand(sp_name, sqlConnection);
            sqlCommand.CommandType = CommandType.StoredProcedure;
            if (parameters != null)
            {
                foreach (KeyValuePair<string, object> parameter in parameters)
                    sqlCommand.Parameters.AddWithValue(parameter.Key, parameter.Value);
            }
            DataTable dataTable = new DataTable();
            sqlConnection.Open();
            using (SqlDataReader sqlDataReader = sqlCommand.ExecuteReader())
            {
                dataTable.Load(sqlDataReader);
            }
            return dataTable;
        }
    }