HI. in asp.net app, I have an xmlDocument that I transform to the client
html. Using xsl I create a few textboxes to capture user input. Each of
these are related to <data> elements in the xmlDoc.
I want to use the Forms collection to post the html form back to an
asp.net page, and process each request.form object (textbox) via an xml
node.value update.
For any given xmlDocument there is an unknown number of items resulting
in textboxes. Each one would, however, have a unique name via their
attributes and that's how I would identify the node.values to update.
Within the new asp.net form I post the html form to, how would I
retrieve each of the items? I'm thinking some kind of for each
statement? But how to assign the name/value pairs etc. dynamically.
Hope this is clear enough! Any examples appreciated.
Thanks.
Kathy
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Nov 17 '05
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p2p.wrox.com, look up code for Professional VB.NET Chapter 10--on XML--maybe
something there can help you. If not try www.superexpert.com, "ASP
Unleashed" Look at code for Chapter 13.
Both of these deal with XML and are really the extent of what I know but
just haven't used it much.
You can easily iterate through your form posted elements as I have said
before. If all have a unique name, then you can get "NameofElem ent" and
then go get it's value as mentioned before... Do that in a loop using the
count-1 property of the collection.
Inside of that as to what to do with it in XML, John is write--that is an
XML question better directed at an XML group. But maybe the sample code
from one of the books I mentioned might have something you need.
Sorry I can't be of further help.
Shane
"KathyB" <Ka**********@a ttbi.com> wrote in message
news:75******** *************** ***@posting.goo gle.com... My html form is a set of user instructions steps. For each
<data_collectio n> element, for example, my xsl turns that into an
<input type=text name="the unique name attribute defined in the base
xml doc"> box in the html form (I would post it, but it's really quite
large). AND, I don't have the html script yet!!! but it's just a
simple post to an aspx page (e.g., process_dom.asp x).
The only "changes" the user is allowed to make are via these text
boxes. When the user is done, they click a Submit button. The submit
javascript then opens an aspX page (hidden from the user), where I
would use code to load the original xml doc and that's where I need to
do node.value changes FOR EACH TEXTBOX INPUT before saving the entire
DOM.
Again, because these instruction docs have an unknown number/type
(different elements such as <measurement> and <data_collectio n> of
name/value pairs, that's where I'm needing the help! I think what
you're giving me is certainly the right track, I'm just not able yet
to translate it into the code I need.
For example, a request.form collection ends up having 2 pairs from two
html textboxes name="one", name="two".
For each, I need to set a variable name so I can use that in an xpath
to get to the right DOM node (yes?).
Dim xElem As XmlElement =
xDoc.SelectSing leNode("//measurement[@name='" & varName & "'")
Then I could do a node.value = "value of the name/value pair here".
Move onto the next name/value pair, set the varName variable, etc.
Hope this helps clarify...I truly, truly appreciate your sticking with
me on this!!!
Thanks.
Kathy
"John Saunders" <jo***********@ surfcontrol.com > wrote in message
news:<e9******* *******@tk2msft ngp13.phx.gbl>. .. "KathyB" <Ka**********@a ttbi.com> wrote in message
news:75******** *************** *@posting.googl e.com... Hi again. Sorry but I'm still confused at how to do this exactly.
That makes two of us. :-)
I
have an html form (resulting from a transformed xml document). Within
the form I will have an unknown set of name/value pairs dependent on
how many of a certain element I have in the source xml (e.g.,
<measurement> or <data_collectio n>.
Ok. BTW, maybe you said this before, but what kind of HTML elements will
contain the name/value pairs from the XML file? Also, I want to make
sure we're both talking about an .aspx page?
When I post the html form, my script opens an asp.net page
Ok, now I'm confused.
When you say "post the html form", I presume you mean that you click a
button or something to submit the form? So, what script are you talking
about? Are you referring to a "<script runat=server />" block in the
..aspx page, or perhaps you're referring to the codebehind?
In those cases, the script _is_ the asp.net page. It doesn't open it.
and I need
to save the xml elements back into the DOM.
Ok, which DOM are you talking about? Do you mean that you need to
update the original XML file?
I figured the best/easiest
way to do that was the request.forms collection (per other posts I've
had).
But to be dynamic (unknown number of elements, but each with a unique
"name" attribute), in English I want to:
For each name/value pair in the request.form collection, I need to set
an xpath expression pointing to the "name" fo the name/value pair,
then update the name.value of the xpath to the value of the name/value
pair.
See what I mean?
Maybe. You can iterate through the Request.Form collection in the same
way you iterate through the NameValueCollec tion in the example I gave. This
is because Request.Form _is_ a NameValueCollec tion:
Dim aName as String
Dim aValue as String
For Each aName in Request.Form.Al lKeys
aValue = Request.Form(aN ame)
' Set the xpath expression pointing to aName then
' update the name.value of the xpath to the value of aValue
Next
Thanks for responding. Kathy
I hope I'm getting warmer. BTW, if this gets further into XML, you'll
have to find someone else to help out - I haven't done much with XML yet.
--
John Saunders
Internet Engineer
jo***********@s urfcontrol.com
"John Saunders" <jo***********@ surfcontrol.com > wrote in message
news:<eg******* *******@TK2MSFT NGP12.phx.gbl>. .. > "Kathy Burke" <ka**********@a ttbi.com> wrote in message
> news:%2******** ********@TK2MSF TNGP10.phx.gbl. ..
> > John, could you possibly show me a little example?
> > Thanks.
> >
>
> Kathy, if I understand you correctly (and I think maybe I don't),
you want > to create a set of name/value pairs at one point in your code (like,
> Page_Load), and use it later in the same request (like, in a Click
event > handler). You can do it like this:
>
> ' Let's assume we have a DataReader returning rows with two fields -
> "TheName" and "TheValue".
> ' We can put them in a variable as follows:
>
> Private NamesAndValues as New
> System.Collecti ons.Specialized .NameValueColle ction()
>
> Private Sub Page_Load(sende r as object, e as EventArgs)
> If Not Page.IsPostBack Then
> ' Somehow get the DataReader, then:
>
> While reader.Read()
> NamesAndValues. Add(reader.GetS tring("TheName" ),
> reader.GetStrin g("TheValue") )
> End While
> End If
> End Sub
>
> ' Later:
> Private Sub btnOk_Click(sen der as Object, e as EventArgs)
> ' We can get the value for a particular name
> Dim aValue as String = NamesAndValues( "aName")
>
> ' Or we can loop through them all
> Dim aName as String
>
> For Each aName in NamesAndValues. AllKeys
> aValue = NamesAndValues( aName)
> Next
>
> End Sub
>
> I hope that helps.
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