frame text

[leontager]

Hi, I use the following code to navigate to a certain website

 

obIE(i) = New SHDocVw.InternetExplorer()

obIE(i).Navigate(address)

obIE(i).Visible = True

 

Now I want to read the text from the page. I know about innertext which works fine unless there is a frame on the page. How can I read the text from a certain frame?

[leontager]

actually source would be fine too. I need to detect any any change in that frame.

[dynamic_sysop]

the best i could come up with after a bit of messing is this, hope it helps...

       If Not doc Is Nothing Then
           Dim x As Integer = 0
           Dim frm As mshtml.HTMLWindow2Class
           For x = 0 To doc.frames.length - 1
               frm = DirectCast(doc.frames.item(x), mshtml.HTMLWindow2Class)
               MessageBox.Show(frm.document.activeElement.innerText)
           Next
       End If

[leontager]

Your best will do :-) Thank you very much.

[jimmknopf]

Hallo,

 

I use also the SHDocVw.InternetExplorer() in my ASP.NET (C#) applikation, and want to get the mshtml.FramesCollection, but I get every time an exception. The value of the InternetExplorer.Document.frames is: <error: an exception of type: {System.InvalidCastException} occurred>

 

Abstract:

//constructor

InternetExplorerClass mIE = new InternetExplorerClass();

mIE.Visible = true;

//...

mIE.Navigate2(ref objURL, ref a, ref a, ref a, ref a);

 

// DocumentComplete

if(URL.ToString().Equals(url)) {

Console.WriteLine(mIE.Document.ToString());

mshtml.IHTMLDocument2 doc = (mshtml.IHTMLDocument2) mIE.Document;

Console.WriteLine(doc.frames.length);

}

[code=csharp]

 

This are the tag�s of my Frameset:

[code]

<frameset cols="*,*">

<frame name="left" src="WebForm1.aspx">

<frame name="right" src="WebForm2.aspx">

</frameset>

[code]

 

I don't know why I get the error?

Edited January 21, 2004 by jimmknopf

[rede]

Access the the InternetExplorer.Document at the right time and from the right thread

 

Hi,

 

After spending the whole day on it I have found a solution.

 

http://lab.msdn.microsoft.com/ProductFeedback/viewFeedback.aspx?FeedbackId=25ab57f0-4d1c-45d4-ac7f-be8061a2ec58#Workarounds

 

You have to read InternetExplorer.Document from the main thread. Please note the use of STAThread. Read more about it here:

http://blogs.msdn.com/jfoscoding/archive/2005/04/07/406341.aspx

 

In the example below I know that there are three frames and I want to be sure that they are all loaded before I access them (This is another problem you have to avoid...)

 

/Patrick

 

 

using System;

 

namespace ConsoleApplication7

{

/// <summary>

/// Summary description for Class1.

/// </summary>

using System;

using mshtml;

using SHDocVw;

using System.Collections;

using System.Threading;

 

namespace ConsoleApplication1

{

class Class1

{

static InternetExplorer ie = null;

 

[sTAThread]

static void Main(string[] args)

{

Class1 class1 = new Class1();

class1.Test();

Console.Read();

}

 

AutoResetEvent firstDocumentCompleted;

AutoResetEvent lastDocumentCompleted;

int completedDocuments;

int expectedDocuments;

 

public void Test()

{

Console.WriteLine("Starting:" + Thread.CurrentThread.ApartmentState.ToString());

 

ie = new SHDocVw.InternetExplorer();

ie.DocumentComplete += new DWebBrowserEvents2_DocumentCompleteEventHandler(DocumentComplete);

ie.Visible = true;

firstDocumentCompleted = new AutoResetEvent(false);

lastDocumentCompleted = new AutoResetEvent(false);

 

 

completedDocuments = 0;

expectedDocuments = 4;

object o = null;

ie.Navigate("http://www.htmq.com/html/sample/frame.htm", ref o, ref o, ref o, ref o);

firstDocumentCompleted.WaitOne(30000, false);

 

IHTMLDocument2 document = (IHTMLDocument2)ie.Document;

lastDocumentCompleted.WaitOne(30000, false);

 

IHTMLFramesCollection2 frames = (IHTMLFramesCollection2)document.frames;

for (int index = 0; index < frames.length; index++)

{

object i = index;

frames.item(ref i);

 

IHTMLWindow2 window = (IHTMLWindow2)frames.item(ref i);

IHTMLDocument2 frameDocument = (IHTMLDocument2)window.document;

 

Console.WriteLine(frameDocument.body.innerHTML);

}

 

Console.WriteLine();

}

 

public void DocumentComplete(object pDisp, ref object URL)

{

Console.WriteLine("DocumentComplete:" + Thread.CurrentThread.ApartmentState.ToString());

int i = Interlocked.Increment(ref completedDocuments);

 

if (i == 1)

{

firstDocumentCompleted.Set();

}

 

if (i == expectedDocuments)

{

lastDocumentCompleted.Set();

}

 

 

}

}

}

}

Edited October 20, 2005 by rede