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Re: Error and Fatal Error

  • From: Stephen D Green <stephengreenubl@gmail.com>
  • To: Andrew Welch <andrew.j.welch@gmail.com>
  • Date: Sun, 17 Jul 2011 23:12:12 +0100

Re:  Error and Fatal Error
I'll try and have a look at the code again tomorrow at work.
 
As far as I remember we do not have access to the strings.
These are *very* commonly used Ajax controls and they
probably bind to a dataset from http://ASP.NET 'markup'. Not
everything in controls like this is available to the developer.
If the controls do bind to a dataset (XML a la .NET) then
the data is possibly pre-packaged as XML even if it has '&'
in the element content. Besides, this is a framework we are
talking about so I do not have much say in what other
developers working now and in the future on the apps do.
One tends to stick with the framework (go with the flow) and
understand that others will try and do the same.
----
Stephen D Green


On 17 July 2011 22:26, David Carlisle <davidc@nag.co.uk> wrote:
On 17/07/2011 22:13, Stephen D Green wrote:
I don't buy that. And not so easy to replace '<' with
'&lt;' in just the element content and not the tags.
----

I thought you indicated that you were taking strings from user supplied form data and adding it to xml, in which case you need to escape the xml syntax characters before you add it to the xml so there is no element content and no tags to worry about. You don't want to add it then try to parse to find element content afterwards as if adding the content has made the xml non well formed you've already lost.

David

On 17 July 2011 22:26, Andrew Welch <andrew.j.welch@gmail.com> wrote:
On 17 July 2011 22:13, Stephen D Green <stephengreenubl@gmail.com> wrote:
> I don't buy that. And not so easy to replace '<' with
> '&lt;' in just the element content and not the tags.

It really is straightforward... if you are adding to an in memory tree
just add the text as-is, if you are adding to serialised xml then just
put text through a serialiser first (by wrapping it in a root node,
serialising it, then substringing it out).

If that's not what you mean then can you do an example of the problem?

If the user is writing markup then it's back to helping them get it
right first time by parsing in the background and highlighting errors.

--
Andrew Welch
http://andrewjwelch.com



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