so so

[huangchangfei]

protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
BindTree();
}
}

private void BindTree()
{
DataSet dsone = Catalogs_DA.Getonedocument();
if (dsone.Tables[0].Rows.Count > 0)
{
foreach (DataRow dr in dsone.Tables[0].Rows)
{
TreeNode tn = new TreeNode();
tn.Text =dr["onecatalogid"].ToString() + dr["catalogname"].ToString();
tn.Value = dr["onecatalogid"].ToString();
TreeView1.Nodes.Add(tn);
Bindtwo(tn);

}
}
}
private void Bindtwo(TreeNode node)
{
DataSet dstwo = Catalogs_DA.GetTwodocument(node.Value);
if (dstwo.Tables[0].Rows.Count > 0)
{
foreach (DataRow dr in dstwo.Tables[0].Rows)
{
TreeNode ttwo = new TreeNode();
ttwo.Text = dr["onecatalogid"].ToString() + dr["twocatalogid"].ToString() + dr["catalogname"].ToString();
ttwo.Value = dr["onecatalogid"].ToString() + dr["twocatalogid"].ToString();
TreeView1.Nodes.Add(ttwo);
BindThree(ttwo);
}
}

}
private void BindThree(TreeNode node)
{
DataSet dsthree = Catalogs_DA.GetThreedocument(node.Value);
if (dsthree.Tables[0].Rows.Count > 0)
{
foreach (DataRow dr in dsthree.Tables[0].Rows)
{
TreeNode tthree = new TreeNode();
tthree.Text = dr["onecatalogid"].ToString() + dr["twocatalogid"].ToString() + dr["threecatalogid"].ToString() + dr["catalogname"].ToString();
tthree.Value = dr["onecatalogid"].ToString() + dr["twocatalogid"].ToString() + dr["threecatalogid"].ToString();
tthree.NavigateUrl = "Documentopen.aspx?catalogid=" + dr["catalogid"].ToString();
TreeView1.Nodes.Add(tthree);
}
}
}

01
0104
02
03
0302
030203
030204
本来需要三级显示的
01
0104
02
03
0302
030203
030204
各位大侠帮我看看这个怎么处理嗨

[huangchangfei]

噢，是这样的格式。treeview
01
0104
02
03
0302
030203
030204
帮我看看

[ds252743641]

数据库结构：   
menuID         content            parentID
  1             一级                 0 
  2             科技                 1 
  3             沈阳                 2 
  4             二级                 0 
  5             美食                 4 
  6             哈尔滨               5 
  7             三级                 0 
  8             美食                 7 
  9             大连                 8

    private void LoadTree()
    {
        treeView1.Nodes.Clear();     //先清空树 
        DataTable dt = ds.Tables[0]; //把表结构从数据库查出来放到DataTable中 
        //循环绑定父节点 
        foreach (DataRow dr in dt.Rows)
        {
            //遍历加载父节点 
            if (Convert.ToInt32(dr["parentID"]) == 0)
            {
                TreeNode newNode = new TreeNode();
                newNode.Text = dr["content"].ToString();
                newNode.NavigateUrl = "Switch.aspx?id=" + dr["menuID"].ToString();
                newNode.Target = "main";
                treeView1.Nodes.Add(newNode);

                ChildLoad(dr, newNode.ChildNodes, dt);
            }
        }

        this.treeView1.ExpandAll();
    }

    //绑定子节点 
    private void ChildLoad(DataRow dr, TreeNodeCollection newNode, DataTable dt)
    {
        foreach (DataRow row in dt.Rows)
        {
            if (Convert.ToInt32(dr["menuID"]) == Convert.ToInt32(row["parentID"]))
            {
                TreeNode childNode = new TreeNode();
                childNode.Text = row["content"].ToString();
                childNode.NavigateUrl = "Switch.aspx?id=" + row["menuID"].ToString();
                childNode.Target = "main";
                newNode.Add(childNode);

                ChildLoad(row, childNode.ChildNodes, dt);   //递归子节点 
            }
        }
    }

[huangchangfei]

O(∩_∩)O~

O(∩_∩)O谢谢，问题已解决