.Net Connet to MySql C# WinApp อีกทางในการเชื่อมฐานข้อมูล

using MySql.Data.MySqlClient;
public abstract class MySQLHelperExt
{
    public static string pubConnStr = "Server=localhost;User Id=root; Password=root; Database=db_personal"; //*****

    MySQLHelperExt()
    {
    }
    public static DataSet Query(string[] strSQL)
    {
        DataSet ds = new DataSet();
        try
        {
            using (MySqlConnection Conn = new MySqlConnection(pubConnStr))
            {
                using (MySqlDataAdapter da = new MySqlDataAdapter(string.Join(";", strSQL), pubConnStr))
                {
                    da.Fill(ds);
                }
            }
        }
        catch (System.Data.MySqlClient.MySqlException ex)
        {
            throw new Exception(ex.Message);
        }
        return ds;
    }

   //...
   //...
   //...
}