treeview 动态绑定 无刷新

Question

 treeview控件 放在updatepanel中  点击节点还是刷新？？？

Answer 1

 string sql = "select * from T_newstype where T_type=0";
            DataSet ds = Code.DB.Serchtb(sql, "newstype");
            for (int i = 0; i < ds.Tables["newstype"].Rows.Count; i++)
            {
                TreeNode tn = Code.Comm.Outtree(ds.Tables["newstype"].Rows[i]["T_id"].ToString(), ds.Tables["newstype"].Rows[i]["T_name"].ToString());
                this.NewsTree.Nodes.Add(tn);
                DataSet dsxl = Code.DB.Serchtb("select * from T_newstype where T_type='" + tn.Value + "'", "newstypexl");
                for (int j = 0; j < dsxl.Tables["newstypexl"].Rows.Count; j++)
                {
                    TreeNode tnxl = Code.Comm.Outtree(dsxl.Tables["newstypexl"].Rows[j]["T_id"].ToString(), dsxl.Tables["newstypexl"].Rows[j]["T_name"].ToString());
                    tn.ChildNodes.Add(tnxl);
                }
            }

Answer 2

什么都不用:
http://dazhzp.cn/logonx.aspx?id=0你试下吧
再不明,看下msdn吧

Answer 3

 <asp:TreeView ID="TVProduct" runat="server" OnSelectedNodeChanged="TVProduct_SelectedNodeChanged"
                    Height="100%" ImageSet="Faq">
                    <ParentNodeStyle Font-Bold="False" ImageUrl="~/images/2.png" />
                    <HoverNodeStyle Font-Underline="True" ForeColor="#6666AA" />
                    <SelectedNodeStyle BackColor="#B5B5B5" Font-Underline="False" HorizontalPadding="0px"
                        ImageUrl="~/image/0.png" VerticalPadding="0px" />
                    <RootNodeStyle ImageUrl="~/images/1.png" />
                    <NodeStyle Font-Names="Tahoma" Font-Size="8pt" ForeColor="Black" HorizontalPadding="5px"
                        ImageUrl="~/images/3.png" NodeSpacing="0px" VerticalPadding="1px" />
                </asp:TreeView>

Answer 4

public partial class Control_left_Product : System.Web.UI.UserControl
{
    TreeNode root = new TreeNode();
    TreeNode leaf = new TreeNode();
    TreeNode subleaf = new TreeNode();
    List<Model.ProductType> lists;
    List<Model.GrassType> list; 
    protected void Page_Load(object sender, EventArgs e)
    {        if (!Page.IsPostBack)
        {
            BindTreeView();
        }
    }
    public void BindTreeView()
    {        if (TVProduct.Nodes.Count == 0)
        {
            root.Text = "产品类别";
            root.Value = "0";
            TVProduct.Nodes.Add(root);
            TVProduct.ExpandAll();
        }
         lists = new BLL.ProductType().Select("");
        
        foreach (Model.ProductType model in lists)   //treeview加载大类别
        {
            leaf = new TreeNode();
            leaf.Text = model.Type_Name;
            leaf.Value =model.Type_Id.ToString();
            root.ChildNodes.Add(leaf);
            BindSubLeaf(model.Type_Id);
            leaf.Collapse();
            
        }
         
    }    public void BindSubLeaf(int Pro_TypeId)  //绑定子节点，展开后每一类最后一个节点（treeview加载小类别）
    {
         list = new BLL.GrassType().Selects(Pro_TypeId);
        foreach (Model.GrassType models in list)
        {
            subleaf = new TreeNode();
            subleaf.Text = models.Type_Name;
            subleaf.Value = models.Type_Id.ToString();
            leaf.ChildNodes.Add(subleaf);
            
          
        }
    }
    protected void TVProduct_SelectedNodeChanged(object sender, EventArgs e)
    {
        string NodesName = TVProduct.SelectedNode.Text;  //选择当前节点
        if (TVProduct.SelectedNode.ChildNodes.Count!=0)   //判断子节点下面没有节点
        {
            
            lists = new BLL.ProductType().Select("");
            foreach (Model.ProductType Pro_Model in lists)
            {
                if (NodesName == Pro_Model.Type_Name)
                {
                    int Pro_TypeId = Pro_Model.Type_Id;
                    Session["Pro_TypeId"] = Pro_TypeId;
                    Session["Gra_TypeId"] = 0;
                    Response.Redirect("Products.aspx?siteMapName="+NodesName);
                    
                }
            }
        }
        else
        {
            string NodesParent = TVProduct.SelectedNode.Parent.Text;  //当前节点的父节点
            lists = new BLL.ProductType().Select("");
            foreach (Model.ProductType Pro_Models in lists)
            {
                if (NodesParent == Pro_Models.Type_Name)
                {
                    int Pro_TypeId = Pro_Models.Type_Id;
                    Session["Pro_TypeId"] = Pro_TypeId;
                }
            }
            list = new BLL.GrassType().Select("");
            foreach (Model.GrassType Grass_Model in list)
            {
                if (NodesName == Grass_Model.Type_Name)
                {
                    TVProduct.SelectedNode.Parent.ToggleExpandState();
                    int Gra_TypeId = Grass_Model.Type_Id;
                    Session["Gra_TypeId"] = Gra_TypeId;
                    Response.Redirect("Products.aspx?siteMapName=" + NodesName + "&NodesParent=" + NodesParent);  
                }
            }
                    }
}    }

Answer 5

updatepanel1呢？
如果你用的是ASP。NETR 2。0需要在ScriptManger中显示声明，允许局部刷新 。

Answer 6

放在 updatel1 中 有ScriptManger显示声明!!!

Answer 7

动态绑定的treeview节点，刷新无法避免，除非用js读取和绑定数据

Answer 8

无刷新就用JS来实现吧this.TreeView1.Attributes.Add("onclick ", "GetTitle();return false "); 
[code=HTML][    <script type="text/javascript">
        function GetTitle() {
            var Obj = event.srcElement;
            alert(Obj.innerText);
        }    </script>/code]

Answer 9

上个前台JS弄乱了    <script type="text/javascript">
        function GetTitle() {
            var Obj = event.srcElement;
            alert(Obj.innerText);
        }    </script>