treeview展开问题
我想把treeview前面的“+”号去掉，然后点击根节点就显示所有子节点，再点击就合拢，初始时treeview是合拢的，请问各位该怎么做？？？？？
[解决办法]
rootnode.Expanded = true; //true默认根结点为展开,false不展开
rootnode.ImageUrl = " ";//这样应该行吧,不过不知道会不会显示一个X
[解决办法]
1,“+”号去掉
ShowPlusMinus属性设为False
2,单击问题
如果你的树结构已经是固定的话，只需要
Private Sub TreeView1_BeforeExpand(ByVal sender As Object, ByVal e As System.Windows.Forms.TreeViewCancelEventArgs) Handles TreeView1.BeforeExpand
RemoveHandler TreeView1.BeforeExpand, AddressOf TreeView1_BeforeExpand
e.Cancel = True
TreeView1.ExpandAll()
AddHandler TreeView1.BeforeExpand, AddressOf TreeView1_BeforeExpand
End Sub
[解决办法]
合拢的代码是:
Private Sub TreeView1_BeforeExpand(ByVal sender As Object, ByVal e As Private Sub TreeView1_BeforeCollapse(ByVal sender As Object, ByVal e As System.Windows.Forms.TreeViewCancelEventArgs) Handles TreeView1.BeforeCollapse
RemoveHandler TreeView1.BeforeCollapse, AddressOf TreeView1_BeforeCollapse
e.Cancel = True
TreeView1.CollapseAll()
AddHandler TreeView1.BeforeCollapse, AddressOf TreeView1_BeforeCollapse
End Sub
