TreePanel 操作之二：刷新TreePanel

     TreePanel的刷新，以下做为一个例子：

     当点击查询按钮时，TreePanel将重新刷新一次。

     前台代码：

 <ext:Button ID="ButtonQuery" runat="server" Text="Search" meta:resourcekey="ButtonQueryResource"
                                                                                        StyleSpec="padding-left:105px;">
                                                                                        <Listeners>
                                                                                            <Click Handler="Search(#{ClientJobTree});" />
                                                                                        </Listeners>
                                                                                    </ext:Button>

  脚本代码：

 

function Search(tree) {
            Coolite.AjaxMethods.Query({
                success: function(result) {
                    var nodes = eval(result);
                    tree.root.ui.remove();
                    tree.initChildren(nodes);
                    tree.root.render();
                    tree.el.unmask();
                },
                failure: function(msg) {
                    tree.el.unmask();
                    Ext.Msg.alert('Failure', '未能加载数据');
                }
            });
        }

后台代码：

  /// <summary>
        /// 绑定树
        /// </summary>
        public Coolite.Ext.Web.TreeNodeCollection TreeBind()
        {
            Coolite.Ext.Web.TreeNodeCollection nodes = new Coolite.Ext.Web.TreeNodeCollection();
            string projectID = Request.QueryString["ProjectID"].ToString();
            string name = TextFieldName.Text.ToString();
            string clientGroup = ComboBoxClientGroup.SelectedItem.Text.ToString();
            string services = ComboBoxClientService.SelectedItem.Text.ToString();
            Coolite.Ext.Web.TreeNode root = new Coolite.Ext.Web.TreeNode();
            //通过ProjectID找到Name
            PROJ_ProjectBase projectBase = this.logic.GetProjectBaseByProjectID(projectID);
            root.Text = projectBase.project_name;
            ClientJobTree.Root.Add(root);
            List<PROJ_ClientJob> rootList = this.logic.GetClientJob(projectID, name, services, clientGroup);
            foreach (PROJ_ClientJob item in rootList)
            {
                string clientID = item.clientJob_id;
                string clientName = item.job_name;
                Coolite.Ext.Web.TreeNode supernode = new Coolite.Ext.Web.TreeNode();
                supernode.NodeID = clientID;
                supernode.Text = clientName;
                supernode.Icon = Icon.Folder;
                supernode.Expanded = true;
                root.Nodes.Add(supernode);
                this.NodeBind(clientID, supernode);
            }

            return ClientJobTree.Root;
        }

        /// <summary>
        /// 树节点的绑定
        /// </summary>
        /// <param name="parentNodeID">父节点号</param>
        /// <param name="parentcode">父节点</param>
        public void NodeBind(string parentNodeID, Coolite.Ext.Web.TreeNode parentcode)
        {
            string projectID = Request.QueryString["ProjectID"].ToString();
            List<PROJ_WBS> wbsList = this.logic.GetProjectWbsByClientJobID(parentNodeID, projectID);
            foreach (PROJ_WBS item in wbsList)
            {
                Coolite.Ext.Web.TreeNode node = new Coolite.Ext.Web.TreeNode();
                string wbsID = item.wbs_id;
                node.NodeID = item.wbs_id;
                node.Text = item.wbs_name;
                node.Icon = Icon.Folder;
                //node.Expanded = false;
                parentcode.Nodes.Add(node);
                this.NodeBind(wbsID, node);
            }
        }


        /// <summary>
        /// 查询事件
        /// </summary>
        [AjaxMethod]
        public string Query()
        {
            Coolite.Ext.Web.TreeNodeCollection nodes = this.TreeBind();
            return nodes.ToJson();
        }