vb.net - ObjectListView 单元格内容更改问题

Question

我想务实地更改单元格的内容。所以我尝试过这样的事情

Private Structure Items
   Dim ID as Integer
   Dim Name as String
End Structure

Dim objItem as Items 
Private Sub AddItem()
   objItem.ID = 1
   objItem.Name = "Name"
   objectlistview.AddObject(objItem)
End Sub

Private sub ChangeItem()
   objItem.Name = "MyName"
   objectlistview.RefreshObject(objItem)
End Sum

AddItem() 方法工作正常。但是 ChangeItem() 方法不起作用。代码有什么问题