动态修改SiteMapPath - 代码生成所有节点 实例

 protected void Page_Load(object sender, EventArgs e)
        {
            SiteMap.SiteMapResolve += new SiteMapResolveEventHandler(SiteMap_SiteMapResolve);

            this.LoadData();
        }

 

 

 

 private SiteMapNode SiteMap_SiteMapResolve(object sender, SiteMapResolveEventArgs e)
        {
            SiteMapNode currentNode = SiteMap.CurrentNode.Clone(true);
            
            Category curCategory = (Category)e.Context.Session["Category"];

            Article curArticle = (Article)e.Context.Session["Article"];

            NavigatorState curNavigatorState = NavigatorState.First;

            string curPageName = e.Context.Request.AppRelativeCurrentExecutionFilePath.Substring(2).ToUpper();

            switch (curPageName)
            {
                case "INDEX.ASPX":
                    {
                        curNavigatorState = NavigatorState.First;
                        break;
                    }
                case "CATEGORYLIST.ASPX":
                    {
                        curNavigatorState = NavigatorState.Category;

                        currentNode = CreateNodes(currentNode, curCategory);
                      
                        break;
                    }
                case "ARTICLEVIEW.ASPX":
                    {
                        curNavigatorState = NavigatorState.Article;

                        currentNode = CreateNodes(currentNode, curCategory);

                        currentNode = CreateChildNode(currentNode, 
                                    curArticle.ArticleID.ToString(),
                                    "ArticleView.aspx?ArticleID=" + curArticle.ArticleID,
                                    "全文");

                        break;
                    }
                    default:
                    {
                        curNavigatorState = NavigatorState.First;
                        break;
                    }
            }

            return currentNode;
        }

 

 

 

 private SiteMapNode CreateNodes(SiteMapNode currentNode,  Category curCategory)
        {
            if (curCategory != null)
            {
                List<Category> curCategoryTree = CategoryData.GetCategoryTree(curCategory.CategoryID);

                SiteMapNode curRootNode = SiteMap.CurrentNode.Clone(true);

                foreach (Category category in curCategoryTree)
                {
                    curRootNode = CreateChildNode(curRootNode,
                                    category.CategoryID.ToString(),
                                    "CategoryList.aspx?CategoryID=" + category.CategoryID,
                                    category.CategoryName);

                    currentNode = curRootNode;
                }
            }
            return currentNode;
        }

 

 

 

 SiteMapNode CreateChildNode(SiteMapNode rootNode, string key, string url, string title)
        {
            SiteMapNodeCollection childNodes = new SiteMapNodeCollection();

            SiteMapNode newNode = new SiteMapNode(SiteMap.Provider, key, url, title);
                                  
            newNode.ParentNode = rootNode;

            childNodes.Add(newNode);

            rootNode.ChildNodes = childNodes;

            return newNode;
        }