和其他控件一样，我们可以用
webBrowser控件来构筑Windows form应用程序。从工具箱中选择Windows 窗体控件组，单击“Microsoft Web 浏览器”，Visual Studio .NET 在后台使用AxImp.exe工具创建ActiveX 控件，控件名字为“AxWebBrowser”。在VB.NET中，不能直接使用COM组件，COM都是Unmanaged Code,在VB.NET中使用这些组件，必须完成从Unmanaged Code到Managed Code的转换。
一般地，你可以像使用原来的WebBrowser控件一样，如call 方法，指定属性，捕捉事件等。
有些事情并不是那么简单的。我们要捕捉页面事件，如当用户点击页面元素（如背景）时，引发页面元素的onclick事件。发果没有捕捉到事件，就要提升DHTML的等级，直到Document对象的最高层次。这样，我们就能捕捉到任何事件了。在VB6中，我们可以简单地用WithEvents关键词指定WebBrowser.Document到MSHTML.HTMLDocument。
在VB.NET中，这个简单方法不再有效。因为ActiveX控件创建了两个接口，两个接口中使用了同样的方法名，导致出现运行时错误。所以，你必须明确指定Document对象使用的接口，并创建事件处理句柄（呵呵，tuenhai翻译得还不错吧）。
以下是示例代码：
' IMPORTANT: this code assumes that you've added a reference to the
' Microsoft HTML Object Library type library
Private Sub Form1_Load(ByVal sender As System.Object, _
ByVal e As System.EventArgs) Handles MyBase.Load
AxWebBrowser1.Navigate("
http://localhost/default.asp")
End Sub
Private Sub AxWebBrowser1_NavigateComplete2(ByVal sender As Object, _
ByVal e As AxSHDocVw.DWebBrowserEvents2_NavigateComplete2Event) Handles _
AxWebBrowser1.NavigateComplete2
' must wait for this event to grab a valid refernece to the Document
' property
Dim doc As mshtml.HTMLDocument = DirectCast(AxWebBrowser1.Document, _
mshtml.HTMLDocument)
' Cast to the
interface that defines the event you're interested in
Dim docevents As mshtml.HTMLDocumentEvents2_Event = DirectCast(doc, _
mshtml.HTMLDocumentEvents2_Event)
' Define a handler to the onclick event
AddHandler docevents.onclick, AddressOf onclickproc
End Sub
' Notice that the signature of this event is different from usual, as it
' is expected to return a Boolean - if false the default effect associated
' with the event (for example, jumping to another page if the click is on
' an hyperlink) is canceled.
Private Function onclickproc(ByVal obj As mshtml.IHTMLEventObj) As Boolean
' an object on the page has been clicked - you can learn more about
' type and position of this object by querying the obj's properties
' ...
End Function
