Treeview树形控件
       XmlDocument doc = new XmlDocument();
            string xml = Application.StartupPath + "\\YQPathConfig\\舆情20121022.xml";
            doc.Load(xml);
            XmlNode no = doc.DocumentElement;
            TreeNode tree = null; ;
            foreach(XmlNode node in no.ChildNodes)
            {
                tree = new TreeNode();
                tree.Text = node.Attributes["name"].Value;
                this.treeView1.Nodes.Add(tree);
                foreach(XmlNode node1 in node.ChildNodes)
                {
                    int i = 0;
       
                    TreeNode  no1 = new TreeNode();
                        no1.Text = node1.Attributes["name"].Value;
                        //this.treeView1.Nodes["" + tree.Text + ""].Nodes.Add(no1);
                        this.treeView1.Nodes[i].Nodes.Add(no1);
                   foreach(XmlNode node2 in node1.ChildNodes)
                   {
                       TreeNode no2 = new TreeNode();
                       no2.Text = node2.Attributes["name"].Value;
                       this.treeView1.Nodes[i].Nodes.Add(no2);
                   }
                   i++;
                }
             
            }

这句该怎么写this.treeView1.Nodes[i].Nodes.Add(no2);  主要是索引
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