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09/21/2006 at 10:41AM PDT, ID: 21998166
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7.8

MSHTML AccessViolationException error??!

Asked by BeauT in Microsoft Visual Basic.Net

Tags: accessviolationexception

Hello experts, I seem to be in a quandry over an error that makes no sense to me.
In following some examples I have found on the Net, I've been attempting to use the MSHTML library in vb.net to access the HTML DOM. However, the following code (copied directly from this article: http://www.codeguru.com/vb/vb_internet/html/article.php/c4815/)...

Dim objMSHTML As New MSHTML.HTMLDocument
Dim objDocument As MSHTML.HTMLDocument


Set objDocument = objMSHTML.createDocumentFromUrl(txtURL.Text, vbNullString)

produces this error:
A first chance exception of type 'System.AccessViolationException' occurred in mscorlib.dll

And when I look at the error message, it tells me that memory could be corrupt elsewhere. I've attempted this line of code by omitting the "http://" portion of the URL, byt trying numerous web sites, and with various other arguments in the 2nd parameter, such as "", ControlChars.NullChar and "null". I've also reset my PC and created a brand new application with only that code and get the same results.

I don't know if it will help, but the details from the exception object are as follows:

System.AccessViolationException was caught
  Message="Attempted to read or write protected memory. This is often an indication that other memory is corrupt."
  Source="mscorlib"
  StackTrace:
       at System.RuntimeType.ForwardCallToInvokeMember(String memberName, BindingFlags flags, Object target, Int32[] aWrapperTypes, MessageData& msgData)
       at mshtml.HTMLDocumentClass.createDocumentFromUrl(String bstrUrl, String bstrOptions)
       at MSHTML_DOM_Practice_1.Form1.createDoc(String URL) in D:\Dev V.2\Misc practice projects\MSHTML DOM Practice 1\MSHTML DOM Practice 1\Form1.vb:line 19


I'm reaching my threshold of frustration and could really use some help!

Thanks,
BeauView the Solution FREE for 30 Days
[+][-]09/21/06 05:46 PM, ID: 17574336

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About this solution

Zone: Microsoft Visual Basic.Net
Tags: accessviolationexception
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Solution Provided By: TheLearnedOne
Participating Experts: 1
Solution Grade: A
 
 
[+][-]09/27/06 03:17 AM, ID: 17608810

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