ASPxTreeList选择复选框问题

Question

我用的是ASPxTreeList树形菜单控件，当我点击复选框时，整个控件上的数据都不见了，请问怎么回事？
下面是我的代码：
<dx:ASPxTreeList ID="ASPxTreeList1" runat="server" AutoGenerateColumns="False" 
        Height="143px" KeyFieldName="MenuId" Width="661px">
        <SettingsSelection Enabled="True" AllowSelectAll="True" Recursive="True" />
        <SettingsBehavior AllowFocusedNode="True" AutoExpandAllNodes="True" />
        <Columns>
            <dx:TreeListTextColumn Caption="菜单" FieldName="MenuName" VisibleIndex="0">
                <HeaderStyle HorizontalAlign="Center" />
            </dx:TreeListTextColumn>
        </Columns>
    </dx:ASPxTreeList>

Answer 1

我的数据绑定应该是没问题的，树形菜单能加载出我要的数据。我还是贴上我完整的代码吧：
页面部分：
  <dx:ASPxTreeList ID="ASPxTreeList1" runat="server" AutoGenerateColumns="False" 
        Height="143px" KeyFieldName="MenuId" Width="661px" 
        ParentFieldName="ParentId">
        <SettingsSelection Enabled="True" AllowSelectAll="True" Recursive="True" />
        <SettingsBehavior AllowFocusedNode="True" AutoExpandAllNodes="True" />
        <Columns>
            <dx:TreeListTextColumn Caption="菜单" FieldName="MenuName" VisibleIndex="0">
                <HeaderStyle HorizontalAlign="Center" />
            </dx:TreeListTextColumn>
        </Columns>
         <Templates>  
                 <DataCell>  
                     <table cellpadding="0" cellspacing="0">  
                         <tr>  
                             <td>  
                                 <dx:ASPxImage ID="ASPxImage1" runat="server" Height="16"   
                                     ImageUrl="<%# GetIconUrl(Container) %>" IsPng="true" Width="16" />  
                             </td>  
                             <td>  
                             </td>  
                             <td style="padding-bottom: 1px;" mce_style="padding-bottom: 1px;">  
                                 <a><%# Container.Text %></a>  
                             </td>  
                         </tr>  
                     </table>  
                 </DataCell>  
             </Templates> 
    </dx:ASPxTreeList>
CS文件代码部分：
   protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {
                BindDataToTree();
            }
          }
  /// <summary>   
        /// 绑定树形菜单数据源  
        /// </summary>   
        public void BindDataToTree()
        {
            keyNum = 0; 
            List<UserMenu> Alllist = bll.GetMenuRoleList(Convert.ToInt32(Request["RoleId"]));
            if (Alllist != null && Alllist.Count > 0)
            {
                List<UserMenu> list = Alllist.FindAll(delegate(UserMenu m) { return m.ParentId == 0; });                TreeListNode fatherTree = null;//树节点   
                int parentId = 0;
                for (int i = 0; i < list.Count; i++)
                {
                    fatherTree = CreateNodeCore(keyNum, "RightTree", list[i].MenuName, null);
                    parentId = list[i].MenuId;
                    CreateNodes(parentId, fatherTree);//递归树
                    keyNum++;
                }
                //ASPxTreeList1.ExpandAll();//展开所有节点   
                this.ASPxTreeList1.ExpandToLevel(2);//默认展开2级
            }        }
        private void CreateNodes(int parentId, TreeListNode parentNodes)
        {
            List<UserMenu> Alllist = bll.GetMenuRoleList(Convert.ToInt32(Request["RoleId"]));
            if (Alllist != null && Alllist.Count > 0)
            {
                List<UserMenu> list = Alllist.FindAll(delegate(UserMenu m) { return m.ParentId == parentId; });
                //递归树
                for (int i = 0; i < list.Count; i++)
                {
                    keyNum++;
                    //再次递归，子节点变成父节点
                    TreeListNode sunList = CreateNodeCore(keyNum, "RightTree", list[i].MenuName, parentNodes);
                    CreateNodes(list[i].MenuId, sunList);
                }
            }        }
        TreeListNode CreateNodeCore(object key, string iconName, string text, TreeListNode parentNode)
        {
            //添加到TreeListNode数组里  
            TreeListNode node = ASPxTreeList1.AppendNode(key, parentNode); 
            //图片名  
            node["IconName"] = iconName; 
            //节点值
            node["MenuName"] = text;
            return node;
        }
        protected string GetIconUrl(TreeListDataCellTemplateContainer container)
        {
            return string.Format("~/Images/{0}.png", container.GetValue("IconName"));//读取图片路径   
        }
运行后显示：
点击复选框显示：

Answer 2

兄弟，原因在于：
 protected void Page_Load(object sender, EventArgs e)
         {
             if (!IsPostBack)
             {
                 BindDataToTree();
             }
           }
 
你把这个IsPostBack的判断去掉就可以。

Answer 3

老兄，你只需把page_load里面的IsPostBack判断去掉即可。