如何从linq＆＃34; .include＆＃34;获取其他表信息。

Question

我试图通过使用这个来获取Table1和Table2中的信息....

Public Shared Function SelectDataByDateAndLastName(ByVal Date As Date, ByVal TxtBoxLastName As String)

    Dim TableItems As ObjectQuery(Of tblTable1) = From TableItem In tblTable1.Include("tblTable2")
                                                        Where TableItem.ItemDate = Date _
                                                        And tblTable2.LastName = TxtBoxLastName
    Return TableItems

但是我在tblTable2.LastName

上收到错误

Reference to a non-shared member requires an object reference

有关如何从Table2获取LastName信息的任何想法？或者我甚至没有使用这个权利？谢谢！

Answer 1

应该有一个导航属性 - 您可以像这样访问它：

Dim TableItems As ObjectQuery(Of tblTable1) = 
    From TableItem In tblTable1.Include("tblTable2")
    Where TableItem.tblTable2.LastName = TxtBoxLastName