c# - Connection to MySQL from .NET using SSH.NET Library

Question

I am developing a web page (ASP.NET/ C#) that queries (MySQL) database on a remote server over SSH. I am using those two libraries (mysql-connector-net-6.9.7) and (Renci.SshNet.dll).

I can access MySQL database using MySQL Workbench on the remote server over SSH connection:
"portal.RemoteServer.edu:22" using "RemoteServerUsername" and
"RemoteServerPassword".

Here is my C# code, which doesn't return any data from Clients table on the remote server:

MySqlConnectionStringBuilder connBuilder = new MySqlConnectionStringBuilder();
connBuilder.AllowBatch = true;
connBuilder.Server = "127.0.0.1";
connBuilder.Port = 3306;
connBuilder.UserID = "LocalHostUserID";
connBuilder.Password = "LocalHostPassword";
connBuilder.Database = "DatabaseName";

var auth =
    new PasswordAuthenticationMethod("RemoteServerUsername", "RemoteServerPassword");
ConnectionInfo conInfo =
    new ConnectionInfo("portal.RemoteServer.edu", "RemoteServerUsername", auth);

using (SshClient client = new SshClient(conInfo))
{
    ForwardedPortLocal port = new ForwardedPortLocal("127.0.0.1", 0, "127.0.0.1", 22);
    client.Connect();
    client.AddForwardedPort(port);
    port.Start();
    MySqlConnection conn = new MySqlConnection(connBuilder.ConnectionString);
    conn.Open();
    conn.ChangeDatabase(connBuilder.Database);

    var command = "SELECT * FROM DatabaseName.Clients LIMIT 10";
    using (MySqlCommand cmd = new MySqlCommand(command))
    {
        using (MySqlDataAdapter sda = new MySqlDataAdapter())
        {
            cmd.Connection = conn;
            sda.SelectCommand = cmd;
            using (DataTable dt = new DataTable())
            {
                sda.Fill(dt);
                GridView1.DataSource = dt;
                GridView1.DataBind();
            }
        }
    }
}

Answer 1

Most of the code below is self explanatory. Still I have put the needful comments. I was able to connect to the MySql database with the code below. I had used SSH library from here and MySql connector for .NET.

using(var client = new SshClient("ssh server id", "sshuser", "sshpassword")) // establishing ssh connection to server where MySql is hosted
{
    client.Connect();
    if (client.IsConnected)
    {
        var portForwarded = new ForwardedPortLocal("127.0.0.1", 3306, "127.0.0.1", 3306);
        client.AddForwardedPort(portForwarded);
        portForwarded.Start();
        using (MySqlConnection con = new MySqlConnection("SERVER=127.0.0.1;PORT=3306;UID=someuser;PASSWORD=somepass;DATABASE=Dbname"))
        {
            using (MySqlCommand com = new MySqlCommand("SELECT * FROM cities", con))
            {
                com.CommandType = CommandType.CommandText;
                DataSet ds = new DataSet();
                MySqlDataAdapter da = new MySqlDataAdapter(com);
                da.Fill(ds);
                foreach (DataRow drow in ds.Tables[0].Rows)
                {
                    Console.WriteLine("From MySql: " + drow[1].ToString());
                }
            }
        }
        client.Disconnect();
    }
    else
    {
        Console.WriteLine("Client cannot be reached...");
    }
}