用递归方法把资料绑定到TreeView控件,显示文档目录

代码

using  System.Collections.Generic;
using  System.Reflection;
using  System.Data;
  partial   class  ViewFolder: System.Web.UI.Page
    {            
         protected   void  Page_Load( object  sender, System.EventArgs e)
        {
             if  ( ! Page.IsPostBack)
            {
                GetNotes();
            }          
        }

         private   void  GetNotes()
        {            
             // 根节点            
            TreeNode tn = new  TreeNode( " 我的文档 " ,  " 0 " ,  this .ControlPath  +   " images/folder0.gif " );
             int  FolderControlID  =  DocumentController.GetTabId( this .PortalId,  " ViewDocument " );
            tn.NavigateUrl  =  Globals.NavigateURL(FolderControlID,  "" ,  " FolderId=0 " );
            TreeFolder.Nodes.Add(tn);

            DataTable dt = null ;
             try
                {
                    dt  =  DocumentController.GetListFolder(UserId);                    
                }

                 catch  (Exception exc)
                {
                     // Module failed to load 
                    Exceptions.ProcessModuleLoadException( this , exc);
                }            
             // 增加子节点
            IntiTree(TreeFolder.Nodes , dt,  0 );       

            TreeNode dustbin  =   new  TreeNode( " 垃圾箱 " ,  " -1 " );
            dustbin.ImageUrl  =   this .ControlPath  +   " images/Dustbin.gif " ;
            TreeFolder.Nodes.Add(dustbin);
        }
         // 递归增加子节点
         private   void  IntiTree(TreeNodeCollection Nds,DataTable dt,  int  parentId)
        {
            DataView dv = new  DataView();                      
            TreeNode tmpNd;             // 创建临时节点

            dv.Table  =  dt;
            dv.RowFilter  =   " ParentFolderId= "   +  parentId;         // 筛选数据
             int  FolderControlID  =  DocumentController.GetTabId( this .PortalId,  " ViewDocument " );

             foreach (DataRowView drv  in  dv)
            {
                tmpNd = new  TreeNode();
                 int  FolderId = Convert.ToInt32(drv[ " FolderId " ]);             // 当前节点的ID号
                tmpNd.Value = FolderId.ToString();
                tmpNd.Text = drv[ " FolderName " ].ToString();

                 string  navUrl  =   " javascript:navurl(' "   +   " http:// "   +  Request.Url.Host  +  ResolveUrl( " ../Document/callIndex.aspx?FolderId= " );
                tmpNd.NavigateUrl  =  navUrl  +  drv[ " FolderId " ].ToString()  +   " ') " ; 

                tmpNd.ImageUrl  =   " images/folder1.gif " ;   
                tmpNd.Expanded  =   false ;                                   // 节点是否展开   
                 // tmpNd.Target="main";                                 // 节点重定向的方向                 
                Nds[Nds.Count - 1 ].ChildNodes.Add(tmpNd);                // 将临时节点添加到TreeView菜单中
                IntiTree(Nds[Nds.Count - 1 ].ChildNodes,dt,FolderId);         // 递归调用,进行遍历
            }

         }
}