Tag: ajax

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Art Haddad Gives an Update

Link – Been a while…

Art’s been really busy and that can only mean good things for end users. He’s thrown up a big post about what he’s been up to, what we can look forward to at ArcGIS 9.2 and he’s even asked his team to start blogging more about ESRI, ArcGIS and AJAX/.NET. There are 15 bullet points about spatial controls for ESRI server products and yes Art, that did wet my apatite. I’m hopeful EDN will become a great tool with the release of 9.2 because as it stands right now it is a little sparse. And I’m also glad to hear that Art’s still working on that ESRI developer conference.

Thanks for the update Art, I’m really looking forward to getting my hands on the new ADF.

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Learn AJAX in 30 Seconds

Link – Rasmus’ 30 second AJAX Tutorial via digg

I find a lot of this AJAX stuff a bit of a hype. Lots of people have been using similar things long before it became “AJAX”. And it really
isn’t as complicated as a lot of people make it out to be. Here is a
simple example from one of my apps.

Normally I don’t bother too much with these “30 second tutorials” you see posted all the time, but this one is great. If you know even a little PHP (or some other server side scripting languages) you should be able to follow this tutorial.

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The State of Ajax

Link – State of Ajax: Progress, Challenges, and Implications for SOAs

Because Ajax is a sincerely compelling synthesis of the ubiquitous features found in the most popular Internet browsers is why. Practitioners of Ajax get high-intensity user interaction (end-user productivity), asynchronicity (efficient backround processing), web browser access to web services (web service access, reuse, and interoperability, as well as SOA integration), platform neutrality (browser and operating system agnosticity), and the Ajax feature set can be delivered as a framework you don’t have to create yourself (developer productivity).

You’ve seen us talk about Ajax on our GIS blogs and you know that Google uses it, but you are still not sure what Ajax is all about? Check out this great article Dion Hinchcliffe on the State of Ajax.

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Using AJAX with ArcIMS

Link – ArcIMS & AJAX

Well, now that everyone and their mother has seen Googlemaps, all I keep hear from my clients is “can you make it pan like googlemaps?”. To be honest, I had thought about doing something exactly like it several years back, but dismissed the idea thinking no one would really want that anyway. Boy, was I wrong.

Jason over at ROK Technologies wants to know if anyone is currently using AJAX with ArcIMS (or ArcGIS Server). We’ve started moving that way with our latest ArcIMS project using AJAX.NET, but we haven’t really progressed far (a little MapObjects project took up some time over the past month). I’m also not really interested in spending too much time developing my own AJAX ArcIMS site since the new ADF with 9.2 should make this all much simpler.

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Asynchronous client script callbacks with .NET 2.0

Link – Asynchronous client script callbacks

ASP.NET V1.0 and V1.1 have no explicit support for this technology (AJAX). Although they provide basic ways to manipulate script blocks, there is no easy way to incorporate more advanced techniques such as asynchronous client script callbacks.

With the upcoming release of ASP.NET V2.0, however, Microsoft focused on useability. This is evident when implementing common tasks and more complex technologies. In fact, 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.

Paul Glavich has posted how to use ASP.NET asynchronous client script callbacks without the need for add-on libraries. He’s also included source code on how to acomplish this. I’m going to have to take a look at this.

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Art Haddad Talks About AJAX

Link: AJAX (dead link).

Art (dead link) talks a little bit about AJAX implementations and GIS. He’s a little unsure of the performance on Mozilla, but having used the alternative IFRAME “hacks” in the past I’d rather figure out an AJAX solution. Personally it sounds like a great idea for discussion at your special interest group meeting (dead link).