MartyConnelly
martyconnelly at shaw.ca
Thu Aug 18 11:27:33 CDT 2005
Ah, I knew why I didn't look at AJAX and ASP.Net 1.0 way back when.
It is a lot easier to do now with ASP.Net 2.0 but it is still Beta 2.0
ASP.NET V1.0 and V1.1 have no explicit support for this technology
ASP.NET V2.0 contains out-of-the-box support for asynchronous client
script callbacks
and provides a fairly simple way to register the callback methods,
invoke them, and handle any associated errors with RaiseCallbackEvent
However the xmlhttp request object does have a deferred callback.
From this months Simple Talk The journal for Microsoft technology
developers and DBAs
Asynchronous client script callback for ASP.Net 2.0
http://www.simple-talk.com/2005/08/10/asynchronous-client-script-callbacks/
Asynchronous Web Service Calls over HTTP with the .NET Framework using
ASP.Net 1.0
Old ASP.Net 1.0 method complicated and falls over in certain situations
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnservice/html/service09032002.asp
This article gives good diagrams on asynch/synch methods
Jesse James Garrett
http://www.adaptivepath.com/publications/essays/archives/000385.php
Jim Lawrence wrote:
>Marty what do you mean 'No dancing Hamster'! :-(
>
>What is your opinion on the AJAX.Net variation on AJAX which seems to be the
>hottest ticket?
>
>Jim
>
>-----Original Message-----
>From: accessd-bounces at databaseadvisors.com
>[mailto:accessd-bounces at databaseadvisors.com] On Behalf Of MartyConnelly
>Sent: Tuesday, August 16, 2005 5:10 PM
>To: Access Developers discussion and problem solving
>Subject: Re: [AccessD] Ajax and Atlas with XML
>
>Nope that is it, all there is in the one xml element, no dancing hamsters
>
>This site will give you a better idea but more html code needed
>Click on
>
>Drop Downs & Form Handling <javascript: toggleDiv('div_dropdowns')>
>
>then click states states
>
>http://www.clearnova.com/ajax/index.html
>
>
>Jim Lawrence wrote:
>
>
>
>>Hi Marty:
>>
>>Just a note the Server page update sample.
>>
>>It initially shows the following line: This is some sample data. It is the
>>default data for this web page. View XML data.
>>
>>.. and when clicking on the link: View XML data
>>
>>.. the line then displays: This is some sample data. It is stored in an XML
>>file and retrieved by JavaScript.
>>
>>.. and that is all. Is there supposed to be more displayed?
>>
>>Jim
>>
>>-----Original Message-----
>>From: accessd-bounces at databaseadvisors.com
>>[mailto:accessd-bounces at databaseadvisors.com] On Behalf Of MartyConnelly
>>Sent: Tuesday, August 16, 2005 12:50 PM
>>To: Access Developers discussion and problem solving
>>Subject: [AccessD] Ajax and Atlas with XML
>>
>>If looking for xml info starter sites.
>>
>>http://www.xml.org
>>http://www.xml.com
>>A vb oriented site was once vbxml.com
>>http://www.topxml.com
>>
>>Try to buy XML books published in last 3 years otherwise
>>you wont get latest in XSLT and XQuery. Old books maybe based on old
>>XSL patterns
>>which might prove confusing.
>>
>>
>>Now here is the latest buzz in XML development with AJAX.
>>
>>In computer programming, AJAX (Asynchronous JavaScript and XML) is a
>>method of building interactive applications for the Web that process
>>user requests immediately.Ajax allows content on Web pages to update
>>immediately when a user performs an action, unlike an HTTP request,
>>during which users must wait for a whole new page to load. For example,
>>a weather forecasting site could display local conditions on one side of
>>the page without delay after a user types in a zip code.
>>Google Map works this way. ATLAS is a downloadable javascript engine
>>Microsoft is supposed to bring out in September at some convention.
>>
>>How difficult is this stuff well it is not rocket science. But an
>>amalgam of 4 or 5 techniques. Ajax combines several programming tools
>>including JavaScript, dynamic HTML (DHTML), Extensible Markup Language
>>(XML), cascading style sheets (CSS), the Document Object Model (DOM),
>>and the Microsoft object, XMLHttpRequest. After that you can use Web
>>Services to grab the xml data. You could modify javascript to VBA too
>>for use in Access.
>>
>>Some sites where you can grab javascript source and examples of Ajax or
>>download them
>>
>>http://www.clearnova.com/ajax/index.html
>>http://developer.apple.com/internet/webcontent/XMLHttpRequestExample/exampl
>>
>>
>e
>
>
>>.html
>>
>>Articles
>>Dynamic HTML and xmlhttpRequest object
>>http://developer.apple.com/internet/webcontent/xmlhttpreq.html
>>
>>Jesse Garrett What is Ajax? (The guy that gave it the name)
>>http://www.adaptivepath.com/publications/essays/archives/000385.php
>>
>>
>>Here is a elementary ajax sample just place the two files on your web
>>server and run with java script enabled
>>through your favourite browser.
>>
>>You can also run from hard disk directly in Netscape 7.0 but IE locally
>>has security stops and uses file: protocol and not http: protocol so
>>wont run correctly
>>without a lot of fiddling with settings. Rather than use a object;
>>might use document.innerhtml to get around for local use.
>>
>>On my server these two files
>>http://www5.brinkster.com/mconnelly/ajax/ajax.html
>>
>>Save this file as UTF-8 not ANSI ajax.html
>>
>><!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN"
>> "http://www.w3.org/TR/html4/strict.dtd">
>><html lang="en" dir="ltr">
>> <head>
>> <meta http-equiv="Content-Type" content="text/html;
>>
>>
>charset=iso-8859-1">
>
>
>> <title>Developing Web Applications with Ajax - Example</title>
>><script type="text/javascript"><!--
>>function ajaxRead(file){
>> var xmlObj = null;
>> if(window.XMLHttpRequest){
>> xmlObj = new XMLHttpRequest();
>> } else if(window.ActiveXObject){
>> xmlObj = new ActiveXObject("Microsoft.XMLHTTP");
>> } else {
>> return;
>> }
>> xmlObj.onreadystatechange = function(){
>> if(xmlObj.readyState == 4){
>> updateObj('xmlObj',
>>xmlObj.responseXML.getElementsByTagName('data')[0].firstChild.data);
>> }
>> }
>> xmlObj.open ('GET', file, true);
>> xmlObj.send ('');
>> }
>> function updateObj(obj, data){
>> document.getElementById(obj).firstChild.data = data;
>> }
>> //--></script>
>> </head>
>> <body>
>> <h1>Developing Web Applications with Ajax</h1>
>> <p>This page demonstrates the use of Asynchronous Javascript and XML
>>(Ajax) technology to
>> update a web page's content by reading from a remote file
>>dynamically -- no page reloading
>> is required. Note that this operation does not work for users
>>without JavaScript enabled.</p>
>> <p id="xmlObj">
>> This is some sample data. It is the default data for this web page.
>><a href="data.xml"
>> title="View the XML data." onclick="ajaxRead('data.xml');
>>this.style.display='none'; return false">View XML data.</a>
>> </p>
>> </body>
>></html>
>>
>>
>>Save this file below as UTF-8 data.xml
>>
>><?xml version="1.0" encoding="UTF-8"?>
>><root>
>> <data>
>> This is some sample data. It is stored in an XML file and retrieved
>>by JavaScript.
>> </data>
>></root>
>>
>>
>>
>>
>>Gustav Brock wrote:
>>
>>
>>
>>
>>
>>>Hi Bryan
>>>
>>>So no job? Or wife?? Is that what you are trying to tell?
>>>On the other hand (for the job option, cannot tell for the wife
>>>option), with your knowledge I would expect it to be easy for you to
>>>find some "new challenges" except, of course, if things are a little
>>>more complicated than they may appear to be ...
>>>
>>>Currently I'm facing some XML work. Haven't done anything with this and
>>>Access and hardly know where to look except browsing this list ...
>>>So an XML cookbook or guide is a suggestion.
>>>
>>>/gustav
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>>>>carbonnb at sympatico.ca 08/16 3:45 am >>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>I have found myself in a situation that gives me an inordinate amount
>>>of free time and I'm looking for some ideas to fill my time.
>>>
>>>I am thinking of something that would make development easier or a
>>>specifc app that would greatly help developers. I need something to
>>>keep my mind active and fingers busy :)
>>>
>>>It can be anything from Access to Word to Excel (Office 2K), even VB
>>>6.
>>>
>>>I'm open to any and all suggestion. And If I can learn something new,
>>>that would be even better.
>>>
>>>Let the flood gates open :-)
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>
>>
>>
>>
>
>
>
--
Marty Connelly
Victoria, B.C.
Canada