Warning BC40056: Namespace Or Type Specified In The Imports 'MySql.Data.MySqlClient'

Currently i working on a project using ASP.net and mysql. these are the classes i imported:

<%import Namespace="System.Data" %>
<%import Namespace="MySql.Data.MySqlClient"%>
Sub Page_Load(sender As Object, e As EventArgs)

Dim myConnection As MySqlConnection
Dim myDataAdapter As MySqlDataAdapter
Dim myDataSet As DataSet

Dim strSQL As String
Dim iRecordCount As Integer

myConnection = New MySqlConnection("server=myserver; user id=XXX; password=XXXX; database=XXXX; pooling=false;")

when i try to test it out on my localhost, i got this error compiler page:

(warning BC40056: Namespace or type specified in the Imports 'MySql.Data.MySqlClient' doesn't contain any public member or cannot be found. Make sure the namespace or the type is defined and contains at least one public member. Make sure the imported element name doesn't use any aliases.

or

Dim myConnection is not defined. ....