Why do I get an Invalid Column Name Error

I get an invalid column name on the Profile.UserName

It sees the Profile.UserName as a column names, but why I don't know.

The error shows on this line:            cms_contentAdapter.Fill(cms_contentDS, "tblmember")


            Dim SelectStatement As String
            Dim MyCommandBuilder As SqlCommandBuilder
            Dim Row As DataRow
            Try
                SelectStatement = "SELECT tblme ...