Getting a reference to an "object" from the WebBrowser Control?

Robin Tucker

Hiya,

I'm using mshtml and the web browser control to embed an OLE object in my
..NET application.

What I want to do is get a reference to the "object" embedded therein:

The HTML looks something like this:

<html>
<body>
<object classid="clsid:260AACA0-F963-101B-8955-0000C0DCD465"
id="TgControl" width="100%" height="100%" border="1" ></object>
</body>
</html>

I am loading the above HTML with the Browser.Navigate2 command and all is
well. Now, I can fetch the Document Object Model of the web page using:

Dim myDoc As HTMLDocument = New HTMLDocumentClass
myDoc = CType(Browser.Document, HTMLDocument)

But how can I get a reference to the actual embedded item "TgControl" from
the object model?

Any hints greatly appreciated.

Robin

Nov 16 '05 #1

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2810

Cor Ligthert

Hi Robin,

When I was you I would start with it in VB.net with Option Strict of.

A sample to get the first href (This is all with early binding)
Watch typos or other errors I copied it from a class however not complete so
someparts can be very good wrong.

It is just to give you the idea.

I hope this helps?

Cor

myDoc = CType(Browser.Document, mshtml.IHTMLDocument2)
For i as integer = 0 To MyDoc.all.length - 1
Dim hElm as mshtml.IHTMLElement= DirectCast(MyDoc.all.item(i),
mshtml.IHTMLElement)
If (hElm.tagName = "a") Then
If Not DirectCast(hElm, mshtml.IHTMLAnchorElement).href Is Nothing
Then
hrefname = DirectCast(hElm,
mshtml.IHTMLAnchorElement).href.ToString
'do Something
End if
End If
next

I'm using mshtml and the web browser control to embed an OLE object in my
.NET application.

What I want to do is get a reference to the "object" embedded therein:

The HTML looks something like this:

<html>
<body>
<object classid="clsid:260AACA0-F963-101B-8955-0000C0DCD465"
id="TgControl" width="100%" height="100%" border="1" ></object>
</body>
</html>

I am loading the above HTML with the Browser.Navigate2 command and all is
well. Now, I can fetch the Document Object Model of the web page using:

Dim myDoc As HTMLDocument = New HTMLDocumentClass
myDoc = CType(Browser.Document, HTMLDocument)

But how can I get a reference to the actual embedded item "TgControl" from
the object model?

Any hints greatly appreciated.

Robin

Nov 16 '05 #2

Robin Tucker

Ok, I can see what you are doing here Cor, but the problem is I have an
object embedded of the class 260AACA0-F963-101B-8955-0000C0DCD465 - what I
want to do is get an IntPtr (or something) to this data blob so that I can
manipulate it while it is embedded in the web browser control.

By looking at the properties of "myDoc" with the debugger, I can see that
the HTML I have shown below results in the "Applet" collection having a
single item in it. I'm guessing this is something to do with my TgControl
object. Now what I want is to get access to this object so I can manipulate
it.

Does this make sense?

Thanks.

"Cor Ligthert" <no**********@planet.nl> wrote in message
news:%2****************@tk2msftngp13.phx.gbl...

Hi Robin,

When I was you I would start with it in VB.net with Option Strict of.

A sample to get the first href (This is all with early binding)
Watch typos or other errors I copied it from a class however not complete so someparts can be very good wrong.

It is just to give you the idea.

I hope this helps?

Cor

myDoc = CType(Browser.Document, mshtml.IHTMLDocument2)
For i as integer = 0 To MyDoc.all.length - 1
Dim hElm as mshtml.IHTMLElement= DirectCast(MyDoc.all.item(i),
mshtml.IHTMLElement)
If (hElm.tagName = "a") Then
If Not DirectCast(hElm, mshtml.IHTMLAnchorElement).href Is Nothing
Then
hrefname = DirectCast(hElm,
mshtml.IHTMLAnchorElement).href.ToString
'do Something
End if
End If
next

I'm using mshtml and the web browser control to embed an OLE object in my .NET application.

What I want to do is get a reference to the "object" embedded therein:

The HTML looks something like this:

<html>
<body>
<object classid="clsid:260AACA0-F963-101B-8955-0000C0DCD465"
id="TgControl" width="100%" height="100%" border="1" ></object>
</body>
</html>

I am loading the above HTML with the Browser.Navigate2 command and all is well. Now, I can fetch the Document Object Model of the web page using:

Dim myDoc As HTMLDocument = New HTMLDocumentClass
myDoc = CType(Browser.Document, HTMLDocument)

But how can I get a reference to the actual embedded item "TgControl" from the object model?

Any hints greatly appreciated.

Robin

Nov 16 '05 #3

Elp

"Robin Tucker" <id*************************@reallyidont.com> wrote in
message news:ca*******************@news.demon.co.uk...

Hiya,

I'm using mshtml and the web browser control to embed an OLE object in my
.NET application.

What I want to do is get a reference to the "object" embedded therein:

No idea regarding your question but wouldn't it be easier to locate the .dll
or .ocx file containing this object and adding it directly on your form
instead of passing through the Web Browser control? Not all IE embeddable
objects can be ambedded in a Window Form but i've done that succesfully with
quite a few of them.

Nov 16 '05 #4

Cor Ligthert

Hi Robin,

Nice idea, however I would first try with that sample I gave you try to get
the information.
Probably is the equivalent from IHTMLAnchorElement for the object
IHTMLObjectElement.
I was currious and I typed it in in MSDN, and there it was :)

http://msdn.microsoft.com/library/de...ement/type.asp

Every element has something like that conform the DOM. From than I would do
that other step to get to the real applet object in mem, however from that I
donnot know how, although it sounds very interesting.

Cor

Nov 16 '05 #5

Nicholas Paldino [.NET/C# MVP]

Cor and Robin,

If you can get the IHTMLObjectElement interface, then you can use the
object property to get the actual object (and cast it to whatever you wish).

Hope this helps.
--
- Nicholas Paldino [.NET/C# MVP]
- mv*@spam.guard.caspershouse.com
"Cor Ligthert" <no**********@planet.nl> wrote in message
news:eJ**************@TK2MSFTNGP10.phx.gbl...

Hi Robin,

Nice idea, however I would first try with that sample I gave you try to get the information.
Probably is the equivalent from IHTMLAnchorElement for the object
IHTMLObjectElement.
I was currious and I typed it in in MSDN, and there it was :)

http://msdn.microsoft.com/library/de...ement/type.asp
Every element has something like that conform the DOM. From than I would do that other step to get to the real applet object in mem, however from that I donnot know how, although it sounds very interesting.

Cor

Nov 16 '05 #6

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