VB.Net mysql programming

Dim sql As String
       Dim MySQLConnection As MySqlConnection
       MySQLConnection = New MySqlConnection
       MySQLConnection.ConnectionString = "server=127.0.0.1;Port=3307; User ID=root; password=qweqwe; database=test"
       MySQLConnection.Open()
       sql = "DELETE FROM online"
       Dim da As New MySqlDataAdapter(sql, MySQLConnection)
       Dim cb As New MySqlCommandBuilder(da)
       MySQLConnection.Close()