create DOM from HTML in vb.net ( 2010 )

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Hi All,

Looking to create a DOM in HTML from aload of HTML.

I currently have a program that is capable of getting the HTML from a website and dumping it into a textbox. from this i was to create a DOM.

Anyone have any ideas... this looks perfect....

HTML DOM Using .NET[^]

However, its C# and won't work in VB.

Thanks.

Posted 22-Feb-13 3:32am

Member 9829514

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[no name] 22-Feb-13 9:42am

So compile the C# code to a DLL and use it from your VB code.

Chris Reynolds (UK) 22-Feb-13 9:46am

It should be fairly straightforward to convert the C# into VB, the .NET framework is the same for both so just take it a line or two at a time and you should be OK

ZurdoDev 22-Feb-13 9:48am

C# and VB.Net are so close that going between generally is not that hard. However, you can try this tool http://www.carlosag.net/tools/codetranslator/

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

Richard MacCutchan · Answer 1 · 2013-02-22T04:18:00

Solution 1

If you use the WebBrowser Class[^], then you can get the DOM direct from the Document property, which is an instance of the HtmlDocument Class[^].

Posted 22-Feb-13 4:18am

Richard MacCutchan

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Member 9829514 22-Feb-13 10:23am

Would you have some sample code please?

Richard MacCutchan 22-Feb-13 10:41am

See my other solution below.

Richard MacCutchan · Answer 2 · 2013-02-22T04:41:00

This code gets the HTML from a control that is inherited from WebBrowser, and uses the DOM to find particular tables and items within it.

C#

// logout from 3Rings
HtmlElement element = Document.GetElementById("directory_list");

// get the table header collection (one element)
HtmlElementCollection trCollection = element.GetElementsByTagName("THEAD");
// get the header items collection
trCollection = trCollection[0].GetElementsByTagName("TH");
int xName = -1;
int xEmail = -1;
int nIndex = 0;
foreach (HtmlElement trItem in trCollection)
{
	Debug.WriteLine(trItem.InnerText);
	string strHeading = trItem.InnerText.Trim().ToLower();
	if (strHeading.Equals("name"))
		xName = nIndex;
	if (strHeading.Equals("email"))
		xEmail = nIndex;
	nIndex++;
}

The documentation will offer further examples, or you could search the CodeProject articles for more samples.

create DOM from HTML in vb.net ( 2010 )

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create DOM from HTML in vb.net ( 2010 )

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