The use of WebBrowser controls in C #

0. Common methods

Navigate (string  urlstring): Browse urlstring represents the URL Navigate (system.uri URL): Browse URL represents the URL Navigate (  Stringstringbyte  additionalheaders: Browse urlstring represents the URL and send a message in PostData  //(usually when we log in to a website, we send the username and password as postdata)GoBack (): Back GoForward (): Forward refresh (): Refresh Stop () : Stop GoHome () : Browse the Home page WebBrowser control's Common properties: Document: Get the currently browsing documents Documenttitle: Gets the page title currently being browsed StatusText: Gets the text URL of the current status bar: Gets the urireadystate of the URL currently being browsed: Gets the status of the browse WebBrowser common events for the control: documenttitlechanged,cangobackchanged,cangoforwardchanged,documenttitlechanged, Progresschanged,progresschanged

1. Gets the value of the non-input control:

webbrowser1.document.all[" control ID"]. InnerText; or webBrowser1.Document.GetElementById (" control ID"). InnerText; or webBrowser1.Document.GetElementById (" control ID"). GetAttribute ("value");

2. Gets the value of the input control:

webbrowser1.document.all[" control ID"]. GetAttribute ("value");; or webBrowser1.Document.GetElementById (" control ID"). GetAttribute ("value");

3. Assign values to the input box:

// Input Box " myname "  "123456"; WebBrowser1.Document.GetElementById ("  Password"). SetAttribute ("value""Welcome123");

4, pull down, check, multi-select:

// Drop- down box:secret. SetAttribute ("value""question1");   // check box rememberme. SetAttribute ("Checked""True"); // multiple marquee cookietime. SetAttribute ("checked""checked");

5. Manipulate elements without IDs based on elements known to have an ID:

HtmlElement btndelete = webBrowser1.Document.GetElementById (Passengerid). parent.parent.parent.parent.firstchild.firstchild.children[1]. Firstchild.firstchild;

Depending on the parent,firstchild,children[1] array, the number of levels of elements can be found.

6. Get the style of div or other elements:

WebBrowser1.Document.GetElementById ("adddiv"). Style;

7, directly execute the script function in the page, with dynamic parameters or without parameters are the line:

New object[1];objarray[0] = (Object)this. Labflightnumber.text; WebBrowser1.Document.InvokeScript ("ticketbook", Objarray); WebBrowser1.Document.InvokeScript ("return False");

8, Automatic Click, automatic submission:

HtmlElement Btnadd = doc. getElementById ("adddiv"). Firstchild;btnadd.invokemember ("click");

9, automatic assignment, and then click the Submit button when the script error or the problem is always loaded, the Click event is usually executed too fast, you need to delay the execution of the Submit button event with the help of the Timer control:

 This true ;  This  + 2 ; Private void Timer1_Tick (object  sender, EventArgs e) {    thisfalse ;    Clickbtn.invokemember ("click"); // Perform a button action }

10. Masking script Error:

Set the WebBrowser control scripterrorssuppressed to True

11, automatically click the pop-up prompt box:

Private void webbrowser1_navigated (object  sender, WebBrowserNavigatedEventArgs e) {  //  Auto-click Pop-Up confirmation or pop-up hint  IHTMLDocument2 vdocument = (IHTMLDocument2) webBrowser1.Document.DomDocument;  VDocument.parentWindow.execScript ("" "JavaScript " // Popup Confirmation  VDocument.parentWindow.execScript ("" "javaScript" ); // Popup Prompt }

WebBrowser when the page is loaded, auto-click (block) of the popup box when you do some automation in the page

Private void webbrowser1_documentcompleted (object  sender, WebBrowserDocumentCompletedEventArgs e) {     // Auto-click Popup Confirmation or pop-up prompt    IHTMLDocument2 vdocument = (IHTMLDocument2) webBrowser1.Document.DomDocument;    VDocument.parentWindow.execScript ("" "JavaScript " // Popup Confirmation    VDocument.parentWindow.execScript ("" "javaScript" ); // pop-    up tips // Here's your code of execution: }

12. Get the IFRAME in the Web page and set the src of the IFRAME

HTMLDocument docframe = webbrowser1.document.window.frames["mainFrame"= webbrowser1.document.all.frames["mainFrame"]. Document; docframe.all["mainFrame"]. SetAttribute ("src""http://www.baidu.com/");

13, the existence of the IFRAME in the Web page Webbrowser1.url and webbrowser1_documentcompleted in the E.url is not the same, the former is the main frame URL, the latter is the current active box port URL.

14. Let the control focus

 This . Webbrowser1.select ();  This . Webbrowser1.focus ();d OC. all["tpl_password_1"]. Focus ();

15. Open the local Web file

@" \test.html ");

16. Get elements, forms

//get elements by name PublicHtmlElement Getelement_name (WebBrowser WB,stringName) {HtmlElement e=WB.    Document.all[name]; returne;}//get elements by ID PublicHtmlElement getelement_id (WebBrowser WB,stringID) {HtmlElement e=WB.    document.getElementById (ID); returne;}//get elements based on index PublicHtmlElement Getelement_index (WebBrowser WB,intindex) {HtmlElement e=WB.    Document.all[index]; returne;}//get form table sole name name, return form PublicHtmlElement Getelement_form (WebBrowser WB,stringform_name) {HtmlElement e=WB.    Document.forms[form_name]; returne;}//set the value of the element Value property Public voidWrite_value (HtmlElement E,stringvalue) {E.setattribute ("value", value);}//methods of executing elements, such as: Click,submit (requires form table sole name), etc. Public voidBtn_click (HtmlElement E,strings) {E.invokemember (s);}