Re: [Htmlparser-user] No previous sibling

[Derrick O. <der...@ro...>]

Cinza,

If you have the complete list of nodes in a node list and are using this to filter, you can find your node just by stepping through the list. So let's say your list is all_nodes, and your table filter code is something like this:

    NodeList tables = all_nodes.ExtractAllNodesThatMatch (new MyTableFilter ());

then you can step through the nodes in all_nodes until you reach the table, and the prior node is the one you want:

    Node previous = null;
    Node target = tables.elementAt(0); // or cycle through the results
    for (int i = 0; i < all_node.Size(); i++)
    {
        Node candidate = all_nodes.elementAt(i);
        if (candidate == target)
            break;
        else
            previous = candidate;
    }

Here, previous is set to the node before your table if it's not null.

Derrick

----- Original Message ----
From: "c....@ar..." <c....@ar...>
To: htm...@li...
Sent: Wednesday, July 11, 2007 10:53:23 AM
Subject: [Htmlparser-user] No previous sibling

Thanks Derrick! It worked!
But now I have another question.

I think that if my node doesn't have a parent node, the previousSibling
and nextSibling methods do not work. Is it right?
This is my problem: as I said I have no html, head and body tag. I have
some table tags but I need to access to the previous row (or node) just
before the table.
I filtered the page with the TagNameFilter("table"), but I do not have any
parent node. What can I do?
Thanks again!


Cinzia


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