treeview获取不到值

[c02645]

母板页设置了EnableViewState="false"
怎么在页面里给绑定的treeview获取已勾选的项啊？
把绑定代码放到
if (!IsPostBack)
的话，点任何按钮，treeview都清空了
不放的话，又重绑定原来的值进treeview里了

[ivws_19]

怎么会清空，贴你的代码看看

[yagebu1983]

需要重新绑定的。。。

[c02645]

using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;

using zp365.admin.BLL;
public partial class myadmin_sys_WebSiteAuthority : System.Web.UI.Page
{
    DataTable dtTree = new DataTable();
    DataTable dtCheck = new DataTable();
    private Int32 SiteID = 0;
    private ArrayList AuthorityID = new ArrayList();
    protected void Page_Load(object sender, EventArgs e)
    {
        ASP.sysMaster sysM = (ASP.sysMaster)this.Master;
        sysM.SetStateEnabled(true);
        sysM.BtBack.Enabled = false;
        sysM.ToolBarClick += new zp365.Lib.Web.CommandDelegate(sysM_ToolBarClick);

        Int32.TryParse(Request["SiteID"], out SiteID);
        if (!IsPostBack)
            bindData();
    }
    void sysM_ToolBarClick(object sender, EventArgs e)
    {
        switch (((ImageButton)sender).CommandName)
        {
            case "save":
                if (SiteID > 0)
                {
                    AuthorityID.Clear();
                    collectNodes(null);
                    //if (websiteBll.save(model) > 0)
                    //    dialog1.openMsg(WebsiteID == 0 ? "添加成功!" : "修改成功", "/myadmin/sys/Website.aspx", false);
                    //else
                    //    dialog1.openMsg("操作失败!");
                }
                break;
        }
    }
    private void bindData()
    {
        if (SiteID > 0)
        {
            dtTree = authorityBll.getAll();
            dtCheck = websiteAuthorityBll.getAll(SiteID);
            loadTree(null, "0");
        }
    }
    /// <summary>
    /// 加载树
    /// </summary>
    /// <param name="tbl"></param>
    /// <param name="tn"></param>
    /// <param name="preID"></param>
    protected void loadTree(TreeNode tn, string preID)
    {
        DataView dv = dtTree.DefaultView;
        dv.RowFilter = "ParentID=" + preID;
        foreach (DataRowView row in dv)
        {
            TreeNode node = new TreeNode();
            node.Text = row["name"].ToString();
            node.Value = row["id"].ToString();
            node.SelectAction = TreeNodeSelectAction.Expand;

            if ((Int32)dtCheck.Compute("count(AuthorityID)","AuthorityID="+row["id"].ToString())>0)
                node.Checked = true;

            if (tn == null)
                tree.Nodes.Add(node);
            else
                tn.ChildNodes.Add(node);

            loadTree(node, row["id"].ToString());
        }

    }
    /// <summary>
    /// 获取选中的结点
    /// </summary>
    /// <param name="node"></param>
    private void collectNodes(TreeNode node)
    {
        TreeNodeCollection tnc;
        if (node == null)
            tnc = this.tree.Nodes;
        else
            tnc = node.ChildNodes;

        foreach (TreeNode tn in tnc)
        {
            if (tn.Checked)
                AuthorityID.Add(tn.Value);
            collectNodes(tn);
        }
    }
}

[c02645]

怎么设置了EnableViewState="false"
那么多控件那么难用啊，drowdowmlist,checkboxlist,treeview都真他妈的太垃圾啊，都不想玩.net了

[边城的刀声]

在提交页面前，用JS遍历所有选中的input，存到一个hidden中。然后Request这个Hidden

[c02645]

[Quote=引用 4 楼 c02645 的回复:]
怎么设置了EnableViewState="false"
那么多控件那么难用啊，drowdowmlist,checkboxlist,treeview都真他妈的太垃圾啊，都不想玩.net了
[/Quote]


在html没有value的值啊,只有text的值