非递归生成的TreeView

开始还想去看那个递归的算法呢  基本没看懂...不知道怎么结束递归的...自己想也没想通.. 然后看看实际问题..反正我们是个小树,只有右孩子 于是就用非递归了... 经过这次折腾后 对SqlDataAdapter和SqlCommand有了更深的了解 先说下TreeView绑定的数据库的结构 ZD_权限(权限名,权限编号,上级权限,权限URL) 权限分配(用户名,权限编号)          类似学生-选课结构 - - 生成TreeView代码 -----------------------------------------------------------------------------------------------     protected void BindDataBase()     {         string username = Request.Cookies["username"].Value;         //string username = "admin";         SqlConnection conn =new SqlConnection(ConfigurationManager.AppSettings["Myconn"]);        // clsDB dbo = new clsDB();        // SqlConnection conn1 =new SqlConnection(dbo.connectionString());         string sqlstr1 = "SELECT ZD_权限.权限名,ZD_权限.上级权限,ZD_权限.权限URL,权限分配表.权限编号 FROM ZD_权限 INNER JOIN 权限分配表 ON ZD_权限.权限编号 = 权限分配表.权限编号 WHERE (权限分配表.用户名 ='"+ username +"' and 上级权限='000')";         SqlDataAdapter da1 = new SqlDataAdapter(sqlstr1,conn);         DataSet ds1 = new DataSet();         da1.Fill(ds1,"allfather");         for(int i=0;i        {   //父节点的创建             TreeNode tree2 = new TreeNode();             tree2.Text = ds1.Tables["allfather"].Rows["权限名"].ToString();             tree2.Target = "right";  //作用于右框架             tree2.SelectAction = TreeNodeSelectAction.Expand;  //父节点选中展开             TreeView1.Nodes.Add(tree2);                          //子节点创建             string sqlstr2 = "SELECT ZD_权限.权限名,ZD_权限.上级权限,ZD_权限.权限URL,权限分配表.权限编号 FROM ZD_权限 INNER JOIN 权限分配表 ON ZD_权限.权限编号 = 权限分配表.权限编号 WHERE (权限分配表.用户名 ='"+ username +"' and 上级权限='"+ ds1.Tables["allfather"].Rows["权限编号"].ToString()+"')";             da1 = new SqlDataAdapter(sqlstr2, conn);             DataSet ds2 = new DataSet();             da1.Fill(ds2, "allchild");             for (int j = 0; j < ds2.Tables["allchild"].Rows.Count; j++)             {                   TreeNode tree3 = new TreeNode();                 tree3.Text=ds2.Tables["allchild"].Rows[j]["权限名"].ToString();                 tree3.NavigateUrl = ds2.Tables["allchild"].Rows[j]["权限URL"].ToString();                 tree3.Target = "right";   //作用于右框架                 tree2.ChildNodes.Add(tree3);             }         }     }

转载于:https://www.cnblogs.com/wpf123/archive/2009/04/21/2347498.html