使用Designer将VB.Net中的组合框与数据表级联

Question

我找到了本教程，并试图使用设计器使其适合我的需求。我可以使用VB.net中的设计器设计数据表，但是当我尝试执行时，在此行Dim dv As DataView = combo2.DataSource

上出现错误

https://www.tek-tips.com/viewthread.cfm?qid=1534892

    Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load

    With BooksView
        .Table = DataSet1.Books
    End With

    With Combo2
        .DisplayMember = "BookName"
        .ValueMember = "BookID"
        .DataSource = BooksView
    End With

    Call Me.SetCombo2(Combo1)

End Sub

有什么主意吗？