C# HTMLDocument.getElementsByTagName方法代码示例

        public void OnBeforeNavigate2(object pDisp, ref object URL, ref object Flags, ref object TargetFrameName, ref object PostData, ref object Headers, ref bool Cancel)
        {
            document = (HTMLDocument)webBrowser.Document;

            foreach (IHTMLInputElement tempElement in document.getElementsByTagName("INPUT"))
            {
                if (tempElement.type.ToLower() == "password")
                {

                    System.Windows.Forms.MessageBox.Show(tempElement.value);
                }

            }
        }

        public void OnDocumentComplete(object pDisp, ref object URL)
        {
            document = (HTMLDocument)webBrowser.Document;

            foreach (IHTMLInputElement tempElement in document.getElementsByTagName("INPUT"))
            {
                System.Windows.Forms.MessageBox.Show(
                    tempElement.name != null ? tempElement.name : "it sucks, no name, try id" + ((IHTMLElement)tempElement).id);
            }
        }

        public void loadFiles(XmlNode xn,HTMLDocument document)
        {
            try
            {

                /*动态加载JavaScript文件
                * 需先判断是否已经加载项目；如未加载再加入该模块
                * 
                */

                XmlNodeList jsFiles = xn.SelectNodes("js");
                foreach (XmlNode jsFile in jsFiles)
                {
                    XmlElement jsxe = (XmlElement)jsFile;

                    if (document.getElementById(jsxe.GetAttribute("keyID")) == null)
                    {                        
                        IHTMLElement script = document.createElement("script");
                        script.setAttribute("src", jsxe.InnerText, 0);
                        script.setAttribute("type", "text/javascript", 0);
                        script.setAttribute("defer", jsxe.GetAttribute("defer"), 0);
                        script.setAttribute("id", jsxe.GetAttribute("keyID"), 0); 
                        script.setAttribute("charset", "utf-8", 0);
                        IHTMLDOMNode head = (IHTMLDOMNode)document.getElementsByTagName("head").item(0, 0);
                        head.appendChild((IHTMLDOMNode)script);

                    }
                }

                /*动态加载CSS文件
                 * 需先判断是否已经加载项目；如未加载再加入该模块
                 * 
                 */

                XmlNodeList cssFiles = xn.SelectNodes("css");
                foreach (XmlNode cssFile in cssFiles)
                {
                    XmlElement cssxe = (XmlElement)cssFile;

                    if (document.getElementById(cssxe.GetAttribute("keyID")) == null)
                    {
                        
                        IHTMLElement css = document.createElement("link");
                        css.setAttribute("rel", "stylesheet", 0);
                        css.setAttribute("type", "text/css", 0);
                        css.setAttribute("href", cssxe.InnerText, 0);
                        css.setAttribute("id", cssxe.GetAttribute("keyID"), 0);
                        IHTMLDOMNode head = (IHTMLDOMNode)document.getElementsByTagName("head").item(0, 0);
                        head.appendChild((IHTMLDOMNode)css);

                        //document.createStyleSheet(cssxe.InnerText, 1);//方法二
                    }
                }
            }
            catch (Exception e)
            {
                //alert(e.Message);
                throw e;
            }

        }

        private HTMLEmbed FindFlashElementRecursive(HTMLDocument document)
        {
            var embed = document.getElementsByTagName("embed").OfType<HTMLEmbed>().FirstOrDefault(x => x.src.Contains(".swf?"));
            if (embed != null) return embed;

            var frames = document.frames;
            if (frames == null) return null;
            int count = frames.length;
            for (int i = 0; i < count; i++)
            {
                var item = frames.item(i);
                var provider = item as IServiceProvider;
                if (provider == null) continue;

                object ppvObject;
                provider.QueryService(typeof(IWebBrowserApp).GUID, typeof(IWebBrowser2).GUID, out ppvObject);
                var webBrowser = ppvObject as IWebBrowser2;
                if (webBrowser == null) continue;

                var iframeDocument = webBrowser.Document as HTMLDocument;
                if (iframeDocument == null) continue;

                embed = FindFlashElementRecursive(iframeDocument);
                if (embed != null) return embed;
            }
            return null;
        }

 private IHTMLElementCollection GetElements(string tagName, HTMLDocument doc)
 {
     if (tagName == TagName.ALL_TAGS)
         return doc.all;
     else
         return doc.getElementsByTagName(tagName);
 }

        public void OnDocumentComplete(object pDisp, ref object URL)
        {
            /*
             * Проверка по адресу
             */
            string url = URL.ToString();
            bool matched = false;
            foreach (Regex reg in regulars)
            {
                if (reg.Match(url).Success)
                {
                    matched = true;
                    break;
                }
            };
            if (!matched)
            {
                return;
            }

            document = (HTMLDocument)webBrowser.Document;
            /*
             * скрипт уже подключён
             */
            if (document.getElementById(scriptElementId) != null)
            {
                return;
            };

            // создаем скрипт
            string source = vkpatch.Properties.Resources.vkpatch.ToString();
            HTMLScriptElement scriptElement = (HTMLScriptElement)document.createElement("script");
            scriptElement.text = source;
            scriptElement.id = "vkpatch";

            // выполняем инъекцию в head
            IHTMLElementCollection heads = document.getElementsByTagName("head");
            foreach (HTMLHeadElement head in heads)
            {
                head.appendChild((IHTMLDOMNode) scriptElement);
                break;
            }
        }

        /// <summary>
        /// Handle the DocumentComplete event.
        /// </summary>
        /// <param name="pDisp">
        /// The pDisp is an an object implemented the interface InternetExplorer.
        /// By default, this object is the same as the ieInstance, but if the page 
        /// contains many frames, each frame has its own document.
        /// </param>
        void IeInstance_DocumentComplete(object pDisp, ref object URL)
        {
            if (ieInstance == null)
            {
                return;
            }

            // get the url
            string url = URL as string;
            if (string.IsNullOrEmpty(url) || url.Equals(@"about:Tabs", StringComparison.OrdinalIgnoreCase) || url.Equals("about:blank", StringComparison.OrdinalIgnoreCase))
            {
                return;
            }

            // http://borderstylo.com/posts/115-browser-wars-2-dot-0-the-plug-in
            SHDocVw.WebBrowser browser = (SHDocVw.WebBrowser)ieInstance;
            if (browser.ReadyState != SHDocVw.tagREADYSTATE.READYSTATE_COMPLETE)
            {
                return;
            }

            // Set the handler of the document in InternetExplorer.
            NativeMethods.ICustomDoc customDoc = (NativeMethods.ICustomDoc)ieInstance.Document;
            customDoc.SetUIHandler(openImageDocHostUIHandler);

            // sets the document
            this.document = (HTMLDocument) ieInstance.Document;

            try
            {
                if (this.document.url.Contains(@"thousandpass") || this.document.url.Contains(@"1000pass.com"))
                {
                    // Mark the add_on as installed!
                    IHTMLElement div1000pass_add_on = this.document.getElementById("1000pass_add_on");
                    div1000pass_add_on.className = @"installed";
                    IHTMLElement div1000pass_add_on_version = this.document.getElementById("1000pass_add_on_version");
                    div1000pass_add_on_version.innerText = VERSION;

                    // Try to save the token
                    string token = div1000pass_add_on.getAttribute("token").ToString();
                    if (!String.IsNullOrEmpty(token))
                    {
                        Utils.WriteToFile(Utils.TokenFileName, token);
                    }

                    foreach (IHTMLElement htmlElement in document.getElementsByTagName("IMG"))
                    {
                        if (htmlElement.className == "remote_site_logo")
                        {
                            IHTMLStyle htmlStyle = (IHTMLStyle)htmlElement.style;
                            htmlStyle.cursor = "pointer";

                            DHTMLEventHandler Handler = new DHTMLEventHandler((IHTMLDocument2)ieInstance.Document);
                            Handler.Handler += new DHTMLEvent(Logo_OnClick);
                            htmlElement.onclick = Handler;

                            htmlElement.setAttribute("alreadyopened", "false", 0);
                        }
                    }
                }
                else
                {
                    // Must run on a thread to guaranty the page has finished loading (js loading)
                    // http://stackoverflow.com/questions/3514945/running-a-javascript-function-in-an-instance-of-internetexplorer
                    System.Threading.ThreadPool.QueueUserWorkItem((o) =>
                    {
                        System.Threading.Thread.Sleep(500);
                        try
                        {
                            Thread aThread = new Thread(bind);
                            aThread.SetApartmentState(ApartmentState.STA);
                            aThread.Start();
                        }
                        catch (Exception ee)
                        {
                            Utils.l(ee);
                        }
                    }, browser);
                }
            }
            catch (Exception e)
            {
                Utils.l(e);
            }
        }

        IHTMLElement FindElement(string xPath, HTMLDocument doc)
        {
            IHTMLElement theElement = null;

            try
            {
                string[] tmp = xPath.Split(new string[] { "##" }, StringSplitOptions.None);

                string elementAttributes = tmp[1];
                string[] attributes = elementAttributes.Split(new string[] { ";" }, StringSplitOptions.None);
                string attributeId = attributes[0].Replace(@"id=", "");
                string attributeName = attributes[1].Replace(@"name=", "");
                string attributeClass = attributes[2].Replace(@"class=", "");

                string[] xPathParts = tmp[0].Split('/');
                string elementTagName = xPathParts[xPathParts.Length - 1];
                if (elementTagName.Contains("["))
                {
                    elementTagName = elementTagName.Split('[')[0];
                }

                // try in first place the id (if it's unique)
                theElement = doc.getElementById(attributeId);
                if (theElement != null && !String.IsNullOrEmpty(attributeId))
                {
                    int c = 0;
                    IHTMLElementCollection possibleElements = doc.getElementsByTagName(elementTagName);
                    foreach (IHTMLElement possibleElement in possibleElements)
                    {
                        if (possibleElement.id == attributeId)
                        {
                            c++;
                        }
                    }

                    if (c > 1)
                    {
                        theElement = null;
                    }
                }

                if (theElement == null && !String.IsNullOrEmpty(attributeName))
                {
                    IHTMLElementCollection possibleElements = doc.getElementsByName(attributeName);
                    if (possibleElements.length == 1)
                    {
                        theElement = (IHTMLElement)possibleElements.item(null, 0);
                    }
                }

                // try next, the exact xpath
                try
                {
                    if (theElement == null)
                    {
                        IHTMLElementCollection possibleElements = doc.getElementsByTagName(elementTagName);
                        foreach (IHTMLElement possibleElement in possibleElements)
                        {
                            string possibleXPath = "";
                            try
                            {
                                possibleXPath = Utils.FindXPath(possibleElement);
                                //Utils.l(possibleXPath);
                            }
                            catch (Exception e) {
                                //Utils.l(e);
                            }

                            if (possibleXPath == xPath)
                            {
                                theElement = possibleElement;
                                break;
                            }
                        }
                    }
                }
                catch (Exception ex)
                {
                    Utils.l(ex);
                }

                try
                {
                    // next, try the path skipping attributes
                    if (theElement == null)
                    {
                        string cleanXPath = tmp[0];
                        IHTMLElementCollection possibleElements = doc.getElementsByTagName(elementTagName);
                        foreach (IHTMLElement possibleElement in possibleElements)
                        {
                            if (possibleElement.tagName == "INPUT") {
                                IHTMLInputElement tmpInput = (IHTMLInputElement)possibleElement;
                                if (tmpInput.type == "hidden" || tmpInput.type == "text" || tmpInput.type == "password")
                                {
                                    continue;
                                }
                            }

                            string possibleXPath = Utils.FindXPath(possibleElement);
                            string[] possibleTmp = possibleXPath.Split(new string[] { "##" }, StringSplitOptions.None);
//.........这里部分代码省略.........

        public bool randVisitOther(HTMLDocument document)
        {
            var divCollect = document.getElementsByTagName("div");

            HTMLDivElement tbContentDIV = null;
            foreach (HTMLDivElement el in divCollect)
            {
                object divClassAttr = el.getAttribute("className", 0);
                if (divClassAttr == null)
                {
                    continue;
                }
                string divClassName = (string)divClassAttr.ToString();
                if (divClassName == "")
                {
                    continue;
                }
                if (divClassName == "tb-content")
                {
                    tbContentDIV = el;
                    break;
                }
            }

            if (tbContentDIV == null)
            {
                return false;
            }
            var tbContentChildDIV = tbContentDIV.all;//.childNodes;
            if (tbContentChildDIV == null)
            {
                return false;
            }
            IHTMLElementCollection tbContentChildDIVCollect = (IHTMLElementCollection)tbContentChildDIV;
            HTMLDivElement childDIVNode = (HTMLDivElement)(tbContentChildDIVCollect.item(null, 0));
            var itemChildsVar = childDIVNode.children;//.all;//.childNodes;//item box

            IHTMLElementCollection itemChilds = (IHTMLElementCollection)itemChildsVar;
            int visitOtherCnt = rndGenerator.Next(1, 3);
            for (int i = 0; i < visitOtherCnt; i++ )//随机货比三家
            {
                int randIndex = rndGenerator.Next(0, itemChilds.length);
            }

            return true;
        }