Dim tpb As WinForm.TopicBar = e.Form.Controls("TopicBar1")For Each page As WinForm.TopicPage In tpb.Pages If page.Name <> e.Page.Name Then page.Collapsed = True End IfNext
执行上面语句后,从下往上展开时没问题,展开一个收缩一个。但从上往下就有毛病了,会出现同时展开的现象,问题在哪儿?