asp.net_TreeView點(diǎn)節(jié)點(diǎn)中文字實(shí)現(xiàn)菜單的收縮與展開

一,數(shù)據(jù)庫:
構(gòu)建好你的菜單表.

二.前臺(tái):
只要一個(gè)TreeView控件,加上 TreeView1_SelectedNodeChanged 事件.

三.后臺(tái):

       protected void TreeView1_SelectedNodeChanged(object sender, EventArgs e)
       {
            for (int i = 0; i < this.TreeView1.Nodes.Count; i++)
            {//跌迭根節(jié)點(diǎn)
                if (this.TreeView1 .SelectedValue==this.TreeView1 .Nodes [i].Value )
                {//如果選中的是根節(jié)點(diǎn),就展開
                    this.TreeView1.SelectedNode.Expanded = true;
                }
                else
                {如果選中的不是根節(jié)點(diǎn)
                    for (int j = 0; j < this.TreeView1.SelectedNode.Parent.ChildNodes.Count; j++)
                    {//就讓選中節(jié)點(diǎn)的所有同級節(jié)點(diǎn)收縮
                        this.TreeView1.SelectedNode.Parent.ChildNodes[j].CollapseAll();
                    }
                    //然后再展開選中的節(jié)點(diǎn)及其所有父節(jié)點(diǎn)
                    this.TreeView1.SelectedNode.Parent.Expanded = true;
                    this.TreeView1.SelectedNode.Expanded = true;
                }
           }
       }//end TreeView1_SelectedNodeChanged