EXT.NET Treepanel带checkbox的问题

Question

我现在已经把TREEPANEL生成树的！..树带有复选框！我想让它加载时从数据库里读出一些值！要是树的节点在这些值里就cbeckbox选中...这个要怎么写啊？？？？？？？

Answer 1

我知道很多人用过EXTJS！有相应的功能代码也可以贴上来的！EXTJS也可以的！只要可以实现这个功能的...

Answer 2

 Ext.onReady(function () {
            var tree = new Ext.tree.TreePanel({
                id: 'tree-mianban',
                animate: true,
                root: new Ext.tree.AsyncTreeNode({
                    id: '0',
                    text: "XXX管理系统",
                    loader: new Ext.tree.TreeLoader({
                        url: "tree_check_data.ashx",
                        listeners: {
                            "beforeload": function (treeloader, node) {
                                treeloader.baseParams = {
                                    id: node.id,
                                    method: 'POST'
                                };
                            }
                        }
                    })
                }),
                rootVisible: false,
                border: false,
                animate: true,
                lines: true,
                enableDD: true,
                useArrows: true,
                containerScroll: true
            });
            tree.on('checkchange', function (node, checked) {
                //alert(node.id);
                node.expand();
                node.attributes.checked = checked;
                node.eachChild(function (child) {
                    child.ui.toggleCheck(checked);
                    child.attributes.checked = checked;
                    child.fireEvent('checkchange', child, checked);
                });
            }, tree);
            tree.expandAll();            var treeForm = new Ext.FormPanel({
                id: 'equipment_info',
                frame: true,
                bodyStyle: 'padding:5px',
                autoWidth: true,
                aotoHeight: true,
                border: false,
                layout: 'column',
                defaults: { anchor: "95%" },
                items: [tree],
                tbar: [new Ext.Toolbar.Fill()
                , "", "-", "", {
                    text: "确定",
                    tooltip: "确定",
                    handler: function () {
                        var checkedNodes = tree.getChecked();
                        var s = [];
                        for (var i = 0; i < checkedNodes.length; i++) {
                            if (checkedNodes[i].leaf != false) {//根节点不选
                                s.push(checkedNodes[i].text)
                            }
                        }
                        Ext.MessageBox.show({
                            title: '选择的项',
                            msg: s.join('<br />'),
                            width: 350,
                            icon: Ext.MessageBox.INFO
                        });
                    }
                }]
            });
            var dtreeWin = new Ext.Window({
                title: "列表",
                renderTo: Ext.getBody(),
                id: 'treewin',
                width: 260,
                height: 470,
                autoScroll: true,
                plain: true,
                iconCls: "editicon",
                resizable: true,
                defaultType: "textfield",
                labelWidth: 100,
                collapsible: true,
                closable: true,
                plain: true,
                modal: 'true',
                buttonAlign: "center",
                bodyStyle: "padding:8px 0 0 10px",
                items: [treeForm]
            });
            dtreeWin.show();
        })

Answer 3

 JSONTree tree = new JSONTree();
            DataSet ds = new DataSet();
            ds = SysPowerbll.GetList(parentid);            foreach (DataRow dr in ds.Tables[0].Rows)
            {
                JSONTreeNode node = new JSONTreeNode()
                {
                    id = Convert.ToInt32(dr["PermissionId"]),
                    text = dr["Description"].ToString()
                };
                //复选框是否勾选 判断该用户是否有权限
                node.@checked = UserPowerExist(userid,dr["PermissionId"].ToString());
                tree.chidren.Add(node);
            }
            return tree.ToString();
我是在服务器控制是否选中的

Answer 4

前台和后台没关系，后台控制选中，只要设置“checked”的值就行了