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标题: 树节点 [打印本页]

作者: MZH 时间: 2012-11-22 07:46
标题: 树节点
public partial class tree_datatable : System.Web.UI.Page
{
      protected void Page_Load(object sender, EventArgs e)
      {
         if (!IsPostBack)
         {
            LoadData();
         }
      }
      private void LoadData()
      {
         // 模拟从数据库返回数据表
         DataTable table = CreateDataTable();

         DataSet ds = new DataSet();
         ds.Tables.Add(table);
         ds.Relations.Add("TreeRelation", ds.Tables[0].Columns["Id"], ds.Tables[0].Columns["ParentId"], false);

         foreach (DataRow row in ds.Tables[0].Rows)
         {

            if (row["ParentId"].ToString() == "0")
            {
                  ExtAspNet.TreeNode node = new ExtAspNet.TreeNode();
                  node.Text = "<a href='showcar.aspx'>" + row["Text"].ToString() + "</a>";
                  node.Expanded = true;
                  Tree1.Nodes.Add(node);

                  ResolveSubTree(row, node);
            }
         }
      }

      private void ResolveSubTree(DataRow dataRow, ExtAspNet.TreeNode treeNode)
      {
         DataRow[] rows = dataRow.GetChildRows("TreeRelation");
         if (rows.Length > 0)
         {
            treeNode.Expanded = true;
            foreach (DataRow row in rows)
            {
                  ExtAspNet.TreeNode node = new ExtAspNet.TreeNode();
                  node.Text = "<a href='showcar.aspx'>" + row["Text"].ToString() + "</a>";
                  treeNode.Nodes.Add(node);

                  ResolveSubTree(row, node);
            }
         }
      }

      #region CreateDataTable

      private DataTable CreateDataTable()
      {
         DataTable dt = new Test().GetList("");
         return dt;

      }

      #endregion

}
[attach]1304[/attach]

怎么样实现左边这种效果的

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