For Each frm As WinForm.Form In Forms
If frm.Opened AndAlso frm.Name <> "导航窗口" Then
frm.Close
End If
Next
Dim bar As WinForm.NavBar = e.sender
Select Case bar.SelectedPage.ButtonText
Case "研发管理主页"
MainTable = Tables("Main")
Case "研发项目管理"
Forms("项目管理窗口").open
Case "研发档案管理"
Forms("档案管理窗口").open
Case "BOM表管理"
Forms("BOM窗口").open
End Select