mysql from c#

MySqlConnectionStringBuilder connBuilder = new MySqlConnectionStringBuilder();
connBuilder.Add("Database", "wp4dev");
connBuilder.Add("Data Source", "localhost");
connBuilder.Add("User Id", "root");
connBuilder.Add("Password", "");

MySqlConnection connection = new MySqlConnection(connBuilder.ConnectionString);
MySqlCommand cmd = connection.CreateCommand();

connection.Open();

//SELECT
StringBuilder tmp = new StringBuilder();
cmd.CommandText = "SELECT * FROM wp_posts";
cmd.CommandType = CommandType.Text;

MySqlDataReader reader = cmd.ExecuteReader();

while (reader.Read())
{
    tmp.AppendLine(String.Format("({0}) {1}",
        reader.GetInt32("ID"),reader.GetString("post_title")
    ));
}

reader.Close();
MessageBox.Show(tmp.ToString());

//MySqlTransaction tran = connection.BeginTransaction();
//MySqlCommand cmd2 = tran.Connection.CreateCommand();

connection.Close();