简单的asp.net登录表单中的编译错误（需要对象引用？）

Help! I am making a web application that is to be hosted on a simple website. It is just a simple login application, on its own page. All it must do is login when the right credentials are given (i have a premade database with usernames and passwords). I am doing this in a vb .aspx file and cannot figure this out (i am no vb expert). Help! I am making a web application that is to