Using ASP .Net web service

[PeteApps]

Hi. I am a newbie that is trying to use an ASP .Net web
service to retrieve and return rows from/to a database. These web
services return XML and the Insert and Update web services also
accept XML as input. I want to use XML rather than objects, since
the binding with E4X works very well and I don't want to do endless
updates to my objects as the schema changes.



I have used the Data > Import Web Service (WSDL) wizard to
create a set of classes. This looks way cool, but I am at a loss as
to how to use them. Specifically, how do I bind the output from the
SelectByKey to my form controls? Also, how can I build the XML to
send back to the Update web service?



Here is my original mxml source that I used to create a
simple form. I have created a constant that has the same xml as
returned by my web service. I have setup my mx:Binding to parse the
xml to the page controls.



I want to invoke the web service to retrieve the xml from the
web service and populate the database. The next step will be to use
the web service to update the row back to the server.



How do I "Attach Code" to this post?

[Zee_Yang]

you might find this article useful,
http://www.adobe.com/devnet/flex/articles/flex_ws.html



note, flex only supports up to soap 1.1. i'm not an .net
expert, but i believe it uses a higher version of soap by default.
i would recommend you looking into weborb for .net instead.

[PeteApps]

Hi, Zee. Thanks for the link to your article, it helped.



Here is where I am at.



I have a simple web service that returns XML. The web service
was returning an ASP .Net XmlDocument, but that gave me an error in
Flex on the return. It looks like Flex didn't know how to deal with
that, complaining about the type. I changed the web service result
to String. I added a listener like your example shows, where I take
the string, cast it to XML and store it in a private variable. My
mx:Binding statements then use the E4X expressions to map the
appropriate XML nodes to the form. This is great and is very
flexible. There is a very loose binding through the XML to my
database.



The next challenge for me is to reverse this process for
updating records back to the web service via XML. I need to build
an XML document from my controls on the page. Any ideas of where to
look for classes to build an XML document from the page controls?



Also, if anyone can give me a clue on how to "Attach Code" I
would be glad to share what I have. I do not see an "Attach Code"
button anywhere on the page. I have tried Camino, Firefox, and IE.
It has taken me many hours more than I thought it would to get this
far, perhaps sharing the code would save others some time and
frustration.



Regards,



Pete