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March 2007 - Posts

If an EventHandler is called twice...

...take a close look at your code . This comes from a case I worked on in the last couple of days: a customer reported a problem in one of his ASP.NET 2.0 pages, which is meant to perform some sort "long running" operation on the server. What puzzled Read More...
Posted Wednesday, March 28, 2007 10:38 PM by Carlo Cardella | 4 Comments
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CSSVista and IE Developer Toolbar to easily customize how your site/blog looks

While working to customize a bit my blog (and you can easily see I'm not a graphic designer! ) I struggled trying to understand and sort out the tangle of CSS styles I can override to change how these pages look (at this is still "work in progress"). Read More...
Posted Tuesday, March 27, 2007 8:09 AM by Carlo Cardella | 2 Comments

New hotfix for ASP.NET 2.0 (CS0006 & FileNotFoundException)

I recently worked with Jerry and Doug on a sporadic problem reported by a customer ( Compiler Error Message: CS0006: Metadata file 'C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\Temporary ASP.NET Files\<path>\<assembly>.dll' could not be found Read More...
Posted Monday, March 26, 2007 7:16 PM by Carlo Cardella | 1 Comments

Session_OnEnd not firing after applying Windows 2003 Service Pack 2

We very recently discovered a bug in classic ASP (asp.dll) you get installing the Service Pack 2 for Windows 2003; removing the SP2 makes it work again as expected, so this is a regression bug introduced by the service pack itself. Basically with SP2 Read More...
Posted Sunday, March 25, 2007 10:17 AM by Carlo Cardella | 46 Comments

Charting in ASP.NET (alas: GDI+ not supported in a service)

A few weeks ago we had an interesting discussing in my team (triggered by a customer's request for some hints on charting in ASP.NET) about the use of GDI+: here is what the documentation states on the subject (and what spurred the customer on opening Read More...
Posted Saturday, March 17, 2007 6:36 PM by Carlo Cardella | 6 Comments
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Advanced ASP.NET 2.0 and deep dive Ajax training

Last week I attended an advanced ASP.NET 2.0 training with deep Ajax dive in our sub in Munich; for my convenience I flew in on Monday morning (I had to wake up at 4 a.m. to go to the airport ), jumped on a S-Bahn train to the station of Lohhof and after Read More...
Posted Saturday, March 10, 2007 6:25 PM by Carlo Cardella | 0 Comments
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Watch out your Web Events!

In ASP.NET 2.0 we have a new powerful monitoring feature called "Web Events" which help keep track of important events happening during your application's lifetime, such as the application is starting, is stopping, it has been recompiled, exceptions etc... Read More...
Posted Saturday, March 10, 2007 5:57 PM by Carlo Cardella | 0 Comments

ASP.NET incorrectly raises a CheckChanged event for a read only checkbox

Here's another interesting one: we had a .aspx page with some controls on it, and one of those controls were a CheckBox; upon a postback, we were trying to set the CheckBox as readonly. What we obtained is that ASP.NET incorrectly raised a CheckChange Read More...
Posted Friday, March 02, 2007 1:20 PM by Carlo Cardella | 0 Comments
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