C# TreeView菜单，MenuStrip菜单递归动态生成例子

这是在权限系统中设计中常用到的两种菜单处理方式

     private  DataTable ModuleTable;

  private   void  FrmMain_Load( object  sender, EventArgs e)
        {
   
                 try
                {
                    InitMenu();
                }
                 catch
                {
                    MenuTree.Nodes.Clear();
                }

｝

     ///   <summary>
         ///  初始化菜单
         ///   </summary>
         protected   void  InitMenu()
        {
            DataSet ds =   new  DataSet();
            ds = bll.GetModuleTypeList( "" );
            RGP.BLL.RGP_Modules bll  =   new  RGP.BLL.RGP_Modules();
            ModuleTable  =  ds.Tables[ 0 ];   // 取得所有数据得到DataTable 

             // 加载TreeView菜单
            LoadNode(MenuTree.Nodes,  " 0 " );

             // 加载MenuStrip菜单
            ToolStripMenuItem topMenu  =   new  ToolStripMenuItem();
            LoadSubMenu( ref  topMenu,  0 );

        }

         ///   <summary>
         ///  递归创建TreeView菜单(模块列表)
         ///   </summary>
         ///   <param name="node"> 子菜单 </param>
         ///   <param name="MtID"> 子菜单上级ID </param>
         protected   void  LoadNode(TreeNodeCollection node,  string  MtID)
        {
            DataView dvList  =   new  DataView(ModuleTable);
            dvList.RowFilter  =   " ModuleTypeSuperiorID= "   +  MtID;   // 过滤父节点 
            TreeNode nodeTemp;
             foreach  (DataRowView dv  in  dvList)
            {
                nodeTemp  =   new  TreeNode();
                nodeTemp.Tag  =  dv[ " ModuleTypeID " ].ToString()  +   " ,0 " ;
                nodeTemp.Text  =  dv[ " ModuleTypeName " ].ToString();   // 节点名称                 
                node.Add(nodeTemp);   // 加入节点 
                 // nodeTemp.SelectAction = TreeNodeSelectAction.Expand;
                 // nodeTemp.Expanded = false;

                 this .LoadNode(nodeTemp.Nodes, nodeTemp.Tag.ToString().Split( ' , ' )[ 0 ]);   // 递归 

                 // 增加子模块分类
                RGP.BLL.RGP_Modules bll  =   new  RGP.BLL.RGP_Modules();
                DataSet Module  =  bll.GetModuleList( " ModuleTypeID= "   +  dv[ " ModuleTypeID " ].ToString());
                 int  i  =   0 ;
                 foreach  (DataRow child_dr  in  Module.Tables[ 0 ].Rows)
                {
                     if  ((UserBox.GetUserTable().IsLimit  ==   true
                             ||  (child_dr[ " ModuleDisabled " ].ToString().ToLower()  ==   " true "
                             &&  UserHandle.ValidationModule( int .Parse(child_dr[ " ModuleID " ].ToString()), RGP_Tag.Browse)))
                             &&  child_dr[ " IsMenu " ].ToString().ToLower()  ==   " true " )
                    {
                        TreeNode ChildNode  =   new  TreeNode(child_dr[ " ModuleName " ].ToString());
                        ChildNode.Tag  =  child_dr[ " ModuleID " ].ToString()  +   " ,1 " ;
                        ChildNode.Expand();
                        nodeTemp.Nodes.Add(ChildNode);
                        i ++ ;
                    }
                }

                 // 删除不必要的模块分类节点。
                 if  (i  ==   0 )
                {
                    MenuTree.Nodes.Remove(nodeTemp);
                }
            }
        }

         ///   <summary>
         ///  递归创建MenuStrip菜单(模块列表)
         ///   </summary>
         ///   <param name="topMenu"> 父菜单项 </param>
         ///   <param name="ItemID"> 父菜单的ID </param>
         private   void  LoadSubMenu( ref  ToolStripMenuItem topMenu,  int  MtID)
        {
            DataView dvList  =   new  DataView(ModuleTable);
             // 过滤出当前父菜单下在所有子菜单数据(仅为下一层的)
            dvList.RowFilter  =   " ModuleTypeSuperiorID= "   +  MtID.ToString();
            ToolStripMenuItem subMenu;
             foreach  (DataRowView dv  in  dvList)
            {
                 // 创建子菜单项
                subMenu  =   new  ToolStripMenuItem();
                subMenu.Text  =  dv[ " ModuleTypeName " ].ToString();
                 // 判断是否为顶级菜单
                 if  (MtID  ==   0 )
                {
                     this .SysMainMenu.Items.Add(subMenu);
                }
                 else
                {
                    topMenu.DropDownItems.Add(subMenu);
                }

                 // 递归调用
                LoadSubMenu( ref  subMenu, Convert.ToInt32(dv[ " ModuleTypeID " ]));

                 // 增加子模块分类
                RGP.BLL.RGP_Modules bll  =   new  RGP.BLL.RGP_Modules();
                DataSet Module  =  bll.GetModuleList( " ModuleTypeID= "   +  dv[ " ModuleTypeID " ].ToString());
                 int  i  =   0 ;
                 foreach  (DataRow child_dr  in  Module.Tables[ 0 ].Rows)
                {
                     if  ((UserBox.GetUserTable().IsLimit  ==   true
                             ||  (child_dr[ " ModuleDisabled " ].ToString().ToLower()  ==   " true "
                             &&  UserHandle.ValidationModule( int .Parse(child_dr[ " ModuleID " ].ToString()), RGP_Tag.Browse)))
                             &&  child_dr[ " IsMenu " ].ToString().ToLower()  ==   " true " )
                    {
                        ToolStripMenuItem ChildMenu  =   new  ToolStripMenuItem(child_dr[ " ModuleName " ].ToString());
                         subMenu.DropDownItems.Add(ChildMenu);
                        i ++ ;
                    }
                }


                 // 删除不必要的模块分类节点。
                 if  (i  ==   0 )
                {
                     this .SysMainMenu.Items.Remove(subMenu);
                }
            }
        }

作者：Neo.Yan
出处：http://www.cnblogs.com/Nick4/
本文版权归作者和博客园共有，欢迎转载，但未经作者同意必须保留此段声明，且在文章页面明显位置给出原文连接，否则保留追究法律责任的权利。
欢迎大家访问我的网站-RedGlove.NET。