如何利用递归算法，做权限设计（C#语言版的源代码）

Question

如何利用递归算法，做权限设计（C#语言版的源代码）

Answer 1

如果向上递归，最后将会递归到root的
那不如大家都root权限

Answer 2

using System;
using System.Collections.Generic;
using System.Text;
using System.IO;
using System.Data;
using System.Windows.Forms;namespace HR.Contorls
{
    /// <summary>
    /// 有关树TreeView控件的操作的公用组件
    /// </summary>    public class TreeViewC
    {
        #region "保存树到DataTable"
        /// <summary>
        /// 保存树结点到DataTable
        /// </summary>
        /// <param name="TreeView1">要保存的树控件</param>
        /// <param name="strParentNumberFieldText">父节点编号字段的名称</param>
        /// <param name="strNumberFieldText">当前节点编号字段的名称</param>
        /// <param name="strNameFieldText">当前节点Text字段的名称</param>
        /// <returns></returns>        public DataTable SaveToDataTable(TreeView TreeView1, string strParentNumberFieldText, string strNumberFieldText, string strNameFieldText)
        {
            DataTable DT = new DataTable("HRTreeView");
            DataColumn ParentNumber = new DataColumn(strParentNumberFieldText, System.Type.GetType("System.String"));
            ParentNumber.MaxLength = 20;
            ParentNumber.AllowDBNull = true;            DataColumn Number = new DataColumn(strNumberFieldText, System.Type.GetType("System.String"));
            ParentNumber.MaxLength = 20;
            ParentNumber.AllowDBNull = false;            DataColumn Name = new DataColumn(strNameFieldText, System.Type.GetType("System.String"));
            ParentNumber.MaxLength = 500;
            ParentNumber.AllowDBNull = false;            DT.Columns.Add(ParentNumber);
            DT.Columns.Add(Number);
            DT.Columns.Add(Name);            FindTreeView(TreeView1, DT);
            return DT;
        }
        /// <summary>
        ///要查找遍历的树
        /// </summary>
        /// <param name="TreeView1">The tree view1.</param>
        /// <param name="DT">The DT.</param>
        private void FindTreeView(TreeView TreeView1, DataTable DT)
        {
            foreach (TreeNode TempNode in TreeView1.Nodes)
            {
                ForTreeNodeToDataTable(TempNode, DT);
            }        }
        /// <summary>
        /// 遍历每一个传入的一级节点所有子节点到DataRow
        /// </summary>
        /// <param name="TempNode">一级节点</param>
        /// <param name="DT">DataTable</param>
        private void ForTreeNodeToDataTable(TreeNode TempNode, DataTable DT)
        {
            DataRow DR;
            DR = DT.NewRow();
            if (TempNode.Parent == null)
            {
                DR[0] = "";
            }
            else
            {
                DR[0] = TempNode.Parent.Tag;
            }
            DR[1] = TempNode.Tag.ToString();
            DR[2] = TempNode.Text;
            DT.Rows.Add(DR);
            foreach (TreeNode aNode in TempNode.Nodes)
            {
                ForTreeNodeToDataTable(aNode, DT);            }
        }
        #endregion        #region "设置树结点的Tag"
        /// <summary>
        /// 设置树结点的Tag
        /// </summary>
        /// <param name="TreeView1">要设置的TreeView<param>
        /// <returns>True/False</returns>
        public bool SetTreeViewTag(TreeView TreeView1)
        {
            try
            {
                foreach (TreeNode TempNode in TreeView1.Nodes)
                {
                    ForTreeNodeSetTag(TempNode);
                                    }
                return true;
            }
            catch
            {
                return false;
            
            }
                   }
        /// <summary>
        ///遍历TreeView的节点
        /// </summary>
        /// <param name="TempNode">传入的结点</param>
        private void ForTreeNodeSetTag(TreeNode TempNode)
        {
            SetTagNumber(TempNode);
            foreach (TreeNode aNode in TempNode.Nodes)
            {
                ForTreeNodeSetTag(aNode);
            }
           
        
        }
        private void SetTagNumber(TreeNode TempNode)
        {
            string TTag = "";
            if (TempNode.Parent == null)
            {
                if (TempNode.PrevNode == null)
                {
                    TTag = "01";//01 02 0201 0202 2,4,6,8,10 ……
                }                else
                {                    TTag = (System.Convert.ToInt64(TempNode.PrevNode.Tag.ToString()) + 1).ToString().PadLeft(TempNode.PrevNode.Tag.ToString().Length, '0');                }
            }
            else
            {
                if (TempNode.PrevNode == null)
                {
                    TTag = TempNode.Parent.Tag.ToString() + "01";
                }
                else
                {
                    TTag = (System.Convert.ToInt64(TempNode.PrevNode.Tag.ToString()) + 1).ToString().PadLeft(TempNode.PrevNode.Tag.ToString().Length, '0');
                
                }            }
            TempNode.Tag = TTag;
        }
     
                   #endregion
    }
}