i am working in asp.net web application and for connectivity with sql server i am using the statement in the pageload event as

Dim sqlcon as SqlConnection

I have added the references

System.dll
System.data.dll

and in the codebehind code I have used the following import statements

<%@ Import Namespace="System.IO" %>
<%@ Import Namespace="System.data" %
<%@ Import Namespace="System.data.sqlclient" %>

but when i compile i m getting the error as type 'sqlconnection' not defined.same is with sqldataadapter and sqlcommandbuilder.i m getting the error of type not defined