Hi,

I am facing a database connection problem. I am not sure what happens, but hope for experts' answers. :)

Here is my situation. I am developing an ASP .NET MVC web application using VS Community for MAC version 7.4.3 (build 10), and MAMP version 4.4.1.

I have do the following code and setup the database in phpMyAdmin provided by MAMP. Here are the details for the settings.

connection string in web.config:

<connectionStrings>
    <add name="SchoolSystem" connectionString="Data Source=localhost;port=3306;Initial Catalog=SchoolSystem;User ID=root;Password=root" providerName="MySql.Data.MySqlClient" />
  </connectionStrings>

Source code:

public ActionResult Add()
        {
            string mainConn = ConfigurationManager.ConnectionStrings["SchoolSystem"].ConnectionString;
            MySqlConnection mysql = new MySqlConnection(mainConn);
            string query = "SELECT * from UserRole;";
            MySqlCommand command = new MySqlCommand(query);
            command.Connection = mysql;
            mysql.Open();
            MySqlDataReader dr = command.ExecuteReader();
            while (dr.Read())
            {
                Console.WriteLine(dr["UserRoleID"].ToString());
                Console.WriteLine(dr["UserRoleName"].ToString());
                Console.WriteLine(dr["IsAll"].ToString());
                Console.WriteLine(dr["IsAddStudent"].ToString());
                Console.WriteLine(dr["IsDeleteStudent"].ToString());
                Console.WriteLine(dr["IsAddTeacher"].ToString());
                Console.WriteLine(dr["IsDeleteTeacher"].ToString());
            }
            mysql.Close();
            return View();
        }

phpMyAdmin configuration:

PHP

phpinfo shows the current configuration of PHP.

MySQL

MySQL can be administered with phpMyAdmin.

To connect to the MySQL server from your own scripts use the following connection parameters:

Host	localhost
Port	3306
User	root
Password	root
Socket	/Applications/MAMP/tmp/mysql/mysql.sock

phpMyAdmin URL:

http://localhost:8888/phpMyAdmin/sql.php?db=SchoolSystem&table=UserRole&token=1cd40620cbc2325e1f15a1c443f327af&pos=0

Error message:

<div id="header"> <div id="header-text">Application Exception</div> </div> <div id="main">

System.Net.Sockets.SocketException

Connection refused

Description: HTTP 500.Error processing request.

Details: Non-web exception. Exception origin (name of application or object): System.

<div>Exception stack trace:</div> <div class="details"></div> <div id="footer"> <div>Version Information:5.8.1.0 (2017-10/6bf3922f3fd Thu Mar 8 17:00:31 EST 2018); ASP.NET Version:4.0.30319.42000</div> </div> </div>

Appreciate any help provided.