TreeView操作

 TreeView 的服务器端操作：从xml文件中读取数据生成tree

        private void InitPage()
        ...{
            InitTreeView();

            //tvMainMenu.Attributes.Add("background-color", "#ffffff");
            tvMainMenu.Attributes.Add("DefaultStyle", "Background-Color:#ffffff;Cursor:Hand;color:#000000;font-size:12.8px;");
            tvMainMenu.Attributes.Add("SelectedStyle", "Background-Color:#ffffff;Cursor:Hand;color:#000000;font-size:12.8px;");
        }

        private void InitTreeView()
        ...{
            XmlDocument doc = Config.Menu;
            XmlElement ele = doc.DocumentElement;

            for(int i=0; i<ele.ChildNodes.Count; i++)
            ...{
                XmlNode xmlNode = ele.ChildNodes[i];
                TreeNode treeNode = new TreeNode();

                treeNode.Text = xmlNode.Attributes["Text"].Value;

                tvMainMenu.Nodes.Add(treeNode);

                AddXmlNode(xmlNode, treeNode);
            }
        }

        private void AddXmlNode(XmlNode xmlNode, TreeNode treeNode)
        ...{
            for(int i=0; i<xmlNode.ChildNodes.Count; i++)
            ...{
                TreeNode temp = new TreeNode();

                temp.Text = xmlNode.ChildNodes[i].Attributes["Text"].Value;

                string right = xmlNode.ChildNodes[i].Attributes["Right"].Value;
                string url = xmlNode.ChildNodes[i].Attributes["Value"].Value;
                temp.NavigateUrl = IsAuthorized(right) ? "javascript:onNodeClicked('" + url + "');" : "javascript:onUnauthorized();";

                treeNode.Nodes.Add(temp);

                AddXmlNode(xmlNode.ChildNodes[i], temp);
            }
        }

TreeView的客户端操作：实现同级结点的互斥操作

function  initTree()
            ...{  
                var tree = document.all["tvMainMenu"]; 
                tree.attachEvent("onexpand", collapseSameLevelNode);
            }
            
            function collapseSameLevelNode()
            ...{
                var index = this.tvMainMenu.clickedNodeIndex;
                
                if(1 == getNodeLevel(index))
                ...{
                    collapseFirstLevel(index);
                }
                else
                ...{
                    collapseSecondLevel(index);
                }                
            }
            
            function collapseSecondLevel(index)
            ...{
                var nodes = new Array();
                var first = getFirstLevelIndex(index);
                var second = getSecondLevelIndex(index);
                
                nodes = this.tvMainMenu.getTreeNode("0" + first).getChildren();
                
                for(i=0; i<nodes.length; i++)
                ...{
                    if(i != second)
                    ...{
                        this.tvMainMenu.getTreeNode(first + "." + i).setAttribute("expanded", "false");
                    }
                }
                
            }
            
            function collapseFirstLevel(index) 
            ...{
                var temp = index;
                
                var nodes = new Array();
                nodes = this.tvMainMenu.getChildren();
                
                for(i=0;i<nodes.length;i++)
                ...{
                    if(i!=temp)
                    ...{                            
                        this.tvMainMenu.getTreeNode("0" + i).setAttribute('expanded','false');
                    }
                }
            }
            
            function getNodeLevel(index)
            ...{    
                return index.split('.').length;
            }
            
            function getFirstLevelIndex(index)
            ...{
                return index.substring(0, index.indexOf('.'));
            }
            
            function getSecondLevelIndex(index)
            ...{
                return index.substring(index.lastIndexOf('.') + 1);
            }