Handling AJAX timeouts gracefully

We’ve been struggling to figure out how to handle an AJAX application when one of its web services becomes unavailable. The problem at least for me was how to check with JavaScript to see if a web service is down. After hitting a roadblock with JavaScript, I found this post today on using Prototype to return a “network down” message if the web service is not available. Simple, clean and slick…

via Ajaxian

MapGuide Open Source Live Application Gallery

Want to see what the new MapGuide Open Source AJAX and DWF viewers look like? The Open Source Geospatial Foundation has a webpage with a couple examples for you to check out. Maybe Digg or Slashdot have linked to them because at least on my end they are pretty slow. I was talking about how ESRI could sell (or give away) the Web ADF so developers could use it in other applications, but maybe MapGuide Open Source could fit that bill also.

MapGuide Open Source AJAX Viewer

Using ArcWeb Explorer

A friend of mine has been in Spain, checking out all the sites. Well when I heard there was a Guggenheim Museum in Bilbao, Spain, I had to learn more. Well Google did get me to their website, but that didn’t help me at all because I had no idea where Bilbao was. My first thought was to put the address in Google Maps, but I got a weird “Sorry we don’t have maps at this zoom level” for Spain (I guess they don’t have as good world coverage as I thought). Anyway, the same problem occurred with Live Local (aka Virtual Earth). I didn’t have Google Earth on this computer so I was getting really frustrated. Then I though, what about ArcWeb Explorer? I took the address, loaded it into an Excel file and then uploaded that into ArcWeb Explorer. Bingo!

Guggenheim Museum Bilbao in ArcWeb Explorer

How cool will this be when the JavaScript API is out or the SVG viewer? I’m lucky that I live in a USA centric world so I usually never see how hard it is to use some of these mapping services. Glad to see at least one has great data for the rest of the world.

Examples of Microsoft Atlas (Microsoft’s ASP.net AJAX framework)

So you might have heard a little about Atlas at the ESRI Dev Summit or just in general in some blogs, but you don’t have a clue about what it is or how it might help you? Scott Guthrie delivered a presentation on Atlas a couple weeks ago in Europe and posted up his slides and some .NET code. What is even better is that this will work with Visual Web Developer Express so if you don’t have access to Visual Studio 2005, you can still get up to speed. I’m personally going to be taking a close look to this as our company transitions from .NET 1.1 to 2.0 and we can begin to take advantage of all the new features in the new .NET framework. The code examples are in C#, but any .NET dev should be able to get used to them.

Will the new .NET Web ADF work with Visual Web Developer 2005 Express Edition?

Visual Studio 2005 Web Developer Express EditionOn the heals of my Atlas post, I got an IM from a developer asking of the new .NET Web ADF will work with the Visual Web Developer 2005 Express Edition. I believe this question was asked in some sessions (though for the life of me I can’t remember nor did I write it down) and the answer was MAYBE. I’m guessing if it is important to you for this ADF to be available for the “free” versions of Visual Studio, you’d better let the development team know.

All done

OK, its over. The BPC has ended and I’m heading back to Tempe tomorrow. Had a great time meeting up with everyone here and I’m glad we get to do this at least once a year. The Dev Summit was by far the highlight, but seeing all the new stuff planned (the new Web ADF, ArcWeb Explorer JavaScript API and the SVG Viewer) does nothing but get me excited.

Time to sit back and keep an eye out in early April for ArcWeb Labs and ArcGIS 9.2 Beta 2 should be out in the next month or two also. Guess we’ll be seeing blogs.esri.com follow and there has been a threat by the Java team to really start blogging so we might just have to hold them to that.