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Microsoft Web Browser Automation using C#

By , 16 Nov 2003
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Sample Image - mshtml_automation.jpg

Introduction

The Microsoft Web Browser COM control adds browsing, document, viewing, and downloading capabilities to your applications. Parsing and rendering of HTML documents in the WebBrowser control is handled by the MSHTML component which is an Active Document Dynamic HTML (DHTML) Object Model hosting ActiveX Controls and script languages. The WebBrowser control merely acts as a container for the MSHTML component and implements navigations and related functions. MSHTML can be automated using IDispatch and IConnectionPointContainer-style automation interfaces. These interfaces enable a host to automate MSHTML through the object model.

Note

If you are not using the Visual Studio .NET IDE; use Windows Forms ActiveX Control Importer (Aximp.exe) to convert type definitions in a COM type library for an ActiveX control into a Windows Forms control. For instance: to generate the interop DLL's for the ActiveX browser component using the command line run aximp ..\system32\shdocvw.dll relative to your system32 path. Compilation of a form that uses the AxSHDocVw.AxWebBrowser class would be as follows: csc /r:SHDocVw.dll,AxSHDocVw.dll YourForm.cs.

Using the code

Simple Automation scenario:

In order to automate this task, first add a Microsoft Web Browser object to an empty C# Windows application. In the Visual Studio .NET IDE, this is done by using the "Customize Toolbox..." context menu (on the Toolbox), pick "Microsoft Web Browser" from the COM components list. This will add an "Explorer" control in the "General" section of the Toolbox.

//
// navigate to google on Form load
//
private void Form1_Load(object sender, System.EventArgs e)
{
    object loc = "<A href="http://www.google.com/">http://www.google.com/</A>";
    object null_obj_str = "";
    System.Object null_obj = 0;
    this.axWebBrowser1.Navigate2(ref loc , ref null_obj, 
          ref null_obj, ref null_obj_str, ref null_obj_str);
}

Next open the solution explorer and add a reference to the Microsoft HTML Object Library (MSHTML) from the COM components list and implement the following code.

//
// Global variable Task used to prevent recursive code executions.
// 

using mshtml;

private int Task = 1; // global

private void axWebBrowser1_DocumentComplete(object sender, 
         AxSHDocVw.DWebBrowserEvents2_DocumentCompleteEvent e)

{
switch(Task)
    {
        case 1:

            HTMLDocument myDoc = new HTMLDocumentClass();
            myDoc = (HTMLDocument) axWebBrowser1.Document;

            // a quick look at the google html source reveals: 
            // <INPUT maxLength="256" size="55" name="q">
            //
            HTMLInputElement otxtSearchBox = 
               (HTMLInputElement) myDoc.all.item("q", 0);

            otxtSearchBox.value = "intel corp";

            // google html source for the I'm Feeling Lucky Button:
            // <INPUT type=submit value="I'm Feeling Lucky" name=btnI>
            //
            HTMLInputElement btnSearch = 
               (HTMLInputElement) myDoc.all.item("btnI", 0);
            btnSearch.click();

            Task++;
            break;

        case 2:

            // continuation of automated tasks...
            break;
    }
}

References

MSDN

History

  • Version 1.0 - November 16th 2003 - Original Submission
  • Version 1.1 - November 17th 2003 - Modified axWebBrowser event

License

This article has no explicit license attached to it but may contain usage terms in the article text or the download files themselves. If in doubt please contact the author via the discussion board below.

A list of licenses authors might use can be found here

About the Author

Alexander Kent
Kentdome LLC
United States United States
Biography in progress Wink | ;-)

Comments and Discussions

 
QuestionHow to block or close popup ads PinmemberSivaji156525-Oct-13 1:48 
QuestionGet WebBrowser control from AxWebBrowser object PinmemberSivaji156525-Oct-13 1:36 
QuestionGood Pinmembermasouda6514-Jul-12 17:46 
Questionsimulate keystrokes for a website PinmemberMember 795068825-May-12 5:00 
GeneralMy vote of 5 Pinmembersach!!27-Jul-11 2:27 
QuestionMy Vote of 5 PinmemberUmesh. A Bhat14-Jul-11 18:45 
QuestionVery well done! PinmemberOmar Gamil13-Jul-11 22:24 
Generaluses in Web application Pinmemberarinhere13-Jan-11 18:13 
QuestionHow to deploy such a program on end users' PC [modified] Pinmembermilkyjing3-Jan-11 5:53 
GeneralMy vote of 4 Pinmemberoriono30-Sep-10 23:46 
GeneralExecute jQuery Pinmemberolibara12-May-10 7:06 
GeneralThank You PinmemberAbinash Bishoyi12-Jan-10 20:48 
QuestionHow to call function of HTML page Pinmemberanhdungitvn28-Oct-09 22:19 
AnswerRe: How to call function of HTML page [modified] Pinmemberzhao wei9-May-10 14:55 
GeneralNot in IE8 though Pinmemberfavazfarook7-Aug-09 17:00 
QuestionHow do I delay until AJAX is finished processing the page? PinmemberMember 138216029-Jul-09 12:31 
AnswerRe: How do I delay until AJAX is finished processing the page? Pinmemberbinhvtt15-Sep-10 16:54 
Questionjavascript Pinmembermnte28-May-09 20:57 
QuestionHow can I load new pages, starting this process over with each one... PinmembertrinityAngie14-May-09 3:45 
QuestionHow to determine when navigation is completed PinmemberMing Liu9-May-09 16:47 
GeneralGood add-on to this article Pinmemberwinmagic200413-Jan-09 9:04 
QuestionHow ot import mshtml and SHDocvw? PinmemberYBONG16-Dec-08 14:18 
Generalweb automation Pinmemberahmed_hosni19885-Dec-08 15:26 
AnswerRe: web automation Pinmemberamertak19-Apr-09 7:43 
QuestionHow to click a javascript object or button? Pinmemberlalspo7-Nov-08 17:15 
AnswerRe: How to click a javascript object or button? PinmemberYBONG16-Dec-08 14:25 
GeneralRe: How to click a javascript object or button? Pinmemberanhdungitvn28-Oct-09 22:52 
QuestionHow to make automatic download? PinmemberHesham Yassin15-Oct-08 9:09 
Questionthis in c++/clr (pure) Pinmemberjoscha1-Apr-08 10:31 
Generalcookies Pinmembermaryus_u29-Mar-08 14:00 
Questionhow can I see the source of last page Pinmemberetetete26-Mar-08 18:23 
AnswerRe: how can I see the source of last page Pinmemberravishankar_9-Mar-09 1:03 
QuestionHow can I get the input in the Frames? PinmemberBen3.Tyo9-Jan-08 20:12 
Generalopen href Pinmembersonic18182-Dec-07 1:56 
QuestionHow can i do this Pinmemberharivinod15-Nov-07 21:00 
GeneralVS2005 changes Pinmemberdubbele onzin6-Nov-07 3:07 
QuestionI have problems with VS2005 PinmemberLeCacho31-Aug-07 5:48 
AnswerRe: I have problems with VS2005 PinmemberLeCacho31-Aug-07 9:24 
Questionhow to add delay Pinmemberkzfid25-Jul-07 3:37 
AnswerRe: how to add delay Pinmembercambelious31-Jul-07 6:37 
QuestionHow to separate cookie? Pinmemberkzfid23-Jul-07 4:03 
Newsproblem with adding mshtml PinmemberVsMAX6669-Jul-07 1:35 
GeneralRe: problem with adding mshtml Pinmemberdmilligan2828-Aug-09 4:16 
QuestionCan we Spoof http headers with this control, Does it parse javascript Pinmemberzeeshan1212-May-07 6:48 
GeneralThx PinmemberDiver18219-Apr-07 6:06 
GeneralAutomation of complex DHTML/AJAX applications PinmemberAlex Furman17-Mar-07 14:50 
Questionhow to disable javascript popup's /error message window... [modified] Pinmemberkegalle18-Jan-07 23:22 
AnswerRe: how to disable javascript popup's /error message window... PinmemberShajeeDotNet17-Jun-07 0:35 
Generalclicking href link Pinmembervivekbhandari18-Jan-07 2:01 
GeneralRe: clicking href link Pinmemberkegalle18-Jan-07 2:42 

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