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WebBrowserControl for the .NET Framework 1.1

, 15 Apr 2010 CPOL
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An implementation of a web browser control for the .NET Framework 1.1.


This article presents an implementation of a web browser control for the .NET Framework 1.1. It's more of a reference for what it does than how it's done.

This is not the result of my work, but a collection of all the help I got along the way.


The need for this control came from a project I'm working in. It's a Smart Client Windows application that hosts applications in web browsers and interacts with the pages.

What does it do?

This control is mainly an interop to the following COM interfaces:

Interface Description Usage
IWebBrowser2 This interface enables applications to implement an instance of the WebBrowser control (Microsoft ActiveX control) or control an instance of the InternetExplorer application (OLE Automation). Note that not all of the methods listed below are supported by the WebBrowser control. Main web browser operation.
DWebBrowserEvents2 This interface designates an event sink interface that an application must implement in order to receive event notifications from a WebBrowser control or from the Microsoft Internet Explorer application. Note that not all of the events listed below are supported by the WebBrowser control. Handling web browser events.
IDocHostUIHandler This custom interface enables an application hosting the WebBrowser control or automating Microsoft Internet Explorer to replace the menus, toolbars, and context menus used by MSHTML. Showing the context menu, translating keys and URLs.
IDocHostShowUI A host can supply mechanisms that will show message boxes and Help by implementing the IDocHostShowUI interface. Showing message boxes (alert and confirm) and help.
IOleCommandTarget The IOleCommandTarget interface enables objects and their containers to dispatch commands to each other. For example, an object's toolbars may contain buttons for commands such as Print, Print Preview, Save, New, and Zoom. Handling script errors.

Using the code

The MSHTML primary interop assembly (installed with the .NET Framework SDK Version 1.1 - usually %ProgramFiles%\Microsoft.NET\Primary Interop Assemblies) is needed to interop with HTML stuff.

Other than that, just add the control to your form or user control.

Known Issues

When bound to a PropertyGrid, the PropertyGrid throws an Exception. Which means that we still don't have designer support.

Thanks To

Barry M., Igor Tandetnik, João Melo, Luís Abreu, Oleg Mihailik, and many more.

Update - July 8, 2007

A few bugs fixed and a change to the API.


This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)


About the Author

Paulo Morgado
Software Developer (Senior) Paulo Morgado
Portugal Portugal

Comments and Discussions

Generalusing DocumentCompleted Pinmemberdakkeh20-Jan-08 3:58 
I need a particular browser!
I want to change some predefined tags in html source and only my
browser can do this.
In DocumentCompleted event handler, I changed the html
source and all things worked well.
The problem is that, in certain situations when a page contains html
editor (java script) and those predefined tags, DocumentCompleteEx
fires infinitely or html editor doesn't work.
What a problem might be there? Is there any solution for this?
Any help would be much appreciated. Thanks.
davood mahvaar
GeneralRe: using DocumentCompleted PinmemberPaulo Morgado20-Jan-08 10:12 
QuestionSessions get lost Pinmemberrootdial16-Aug-07 9:38 
AnswerRe: Sessions get lost PinmemberPaulo Morgado16-Aug-07 13:00 
GeneralLinks crashing in [modified] PinmemberBarry M.1-Jun-07 9:09 
GeneralRe: Links crashing in PinmemberPaulo Morgado2-Jun-07 15:40 
GeneralRe: Links crashing in PinmemberBarry M.2-Jun-07 18:41 
GeneralRe: Links crashing in PinmemberPaulo Morgado3-Jun-07 2:35 
GeneralRe: Links crashing in PinmemberBarry M.3-Jun-07 5:59 
GeneralRe: Links crashing in PinmemberPaulo Morgado3-Jun-07 6:52 

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