MySQL DataAccess

using MySql.Data.MySqlClient;
using System;
using System.Collections.Generic;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace TicketManagementSystem
{
    public class DataAccess
    {
        #region Constructor

        public DataAccess()
        {
            ConfigDB = ConfigurationManager.AppSettings.Get("dbSchema");
            ConfigServer = ConfigurationManager.AppSettings.Get("dbServer");
            ConfigDBUser = ConfigurationManager.AppSettings.Get("dbUsername");
            ConfigDBPassword = ConfigurationManager.AppSettings.Get("dbPassword");
            ConfigDBPort = "3306";
        }

        public DataAccess(string db, string server, string user, string pw)
        {
            ConfigDB = db ;
            ConfigServer = server;
            ConfigDBUser = user ;
            ConfigDBPassword = pw ;
            ConfigDBPort = "3306";
        }
        #endregion

        #region Private
        private string Server { get; set; }
        private string ConfigServer { get; set; }
        private string ConfigDBUser { get; set; }
        private string ConfigDBPassword { get; set; }
        private string ConfigDB { get; set; }
        private string ConfigDBPort { get; set; }
        #endregion

        #region Exposed Methods

        public string connectionString
        {
            get
            {
                return string.Format("SERVER={0};UID={1};PASSWORD={2};DATABASE={3};PORT={4}; respect binary flags=false;", ConfigServer, ConfigDBUser, ConfigDBPassword, ConfigDB, ConfigDBPort);

            }
        }

        public MySqlConnection Connection
        {
            get
            {
                return new MySqlConnection(connectionString);
            }
        }

        public DataTable FetchData(string sql)
        {
            return FetchData(sql, null);
        }

        public DataTable FetchData(string sql, List<MySqlParameter> param)
        {
            using (MySqlConnection conn = Connection)
            {
                MySqlCommand cmd = new MySqlCommand(sql, conn);

                if (param != null)
                {
                    foreach (MySqlParameter par in param)
                    {
                        cmd.Parameters.AddWithValue(par.ParameterName, par.Value);
                    }
                }

                cmd.Connection.Open();

                MySqlDataReader rdr = cmd.ExecuteReader(CommandBehavior.CloseConnection);

                DataTable dt = new DataTable();

                dt.Load(rdr);

                cmd.Connection.Close();

                return dt;
            }
        }

        public void DBOps(string sql)
        {
            DBOps(sql, null);
        }

        public void DBOps(string sql, List<MySqlParameter> param)
        {
            using (MySqlConnection conn = Connection)
            {
                MySqlCommand cmd = new MySqlCommand(sql, conn);

                if (param != null)
                {
                    foreach (MySqlParameter par in param)
                    {
                        cmd.Parameters.AddWithValue(par.ParameterName, par.Value);
                    }
                }

                conn.Open();
                cmd.ExecuteNonQuery();
                cmd.Connection.Close();
                conn.Close();
            }
        }
        #endregion
    }
}