AppDev: Something You Should Know by Irena Kennedy

Note : If you know of the source or author, please let me know so I can give proper credit. Special thanks to Gabe Brown for forwarding this image.

Ever wonder what are the circumstances of when Windows blue screens? To my knowledge, if an unhandled exception occurs in kernel-mode code (e.g. a privileged device driver or the OS kernel itself), Windows considers it too unsafe to keep running, so it...

Apparently… yes! W. H. Thorpe (University of Cambridge) was the first to demonstrate learning in birds by performing what is now considered to be a classic experiment, involving the isolation of male chaffinches (European songbirds) in soundproof...

http://whois.domaintools.com/ has been my long term favorite domain lookup tool for things like blacklist status, IP location, registrar information, etc. , but now it has a lot more information including search engine optimization (SEO) score, number...

Did you know that http://maps.live.com/ now provides up-to-date traffic information shown using different colors (green, yellow, and red) to indicate traffic conditions along your route? Of course, you can remove it by clicking ‘Hide traffic conditions...

It’s well known that, to improve performance, SQL Server caches query execution plans in memory. But would you like to know what query execution plans are currently in the cache? The following query will yield that information: select substring...

Answer: Int egrated el ectronics. Source: The 365 amazing trivia facts calendar from www.pageaday.com

Did you know that since .NET 2.0 you can define register directives in the <pages> element in your configuration instead of using @Register directive on every page? It’s especially useful if you’re using a custom control(s) in multiple web pages...

… is to see it for what it is: a dissatisfaction with the self.” – Joan Didion Source: 2007 Calendar ‘For Women Who Do Too Much’

Consider the following scenario – you create your own calendar control and you’d like to raise an event when a date is selected (e.g. OnDateClicked)… and you’d like for the users of your calendar control to process the event using JavaScript on the client...

The results of several studies on affects of synthetic antioxidants such as beta carotene, vitamin A, vitamin E, vitamin C (ascorbic acid) and selenium were published in American Medical Association journal. In summary: “We did not find convincing...

If you’re creating a custom client-side control by deriving from System.Web.UI.IScriptControl, you may want to embed the .js files into your assembly instead of having to deploy them to every web site that uses those controls (this is especially valuable...

Each letter stands for a 1-digit number. No two letters may stand for the same number. Using pen and paper (i.e. not writing a computer program), find a value for each letter from the following set: 0, 1, 2, 3, 4, 6, 7, 8, 9. BAD + LET --...

Not going to MIX 07 this year? You can still download a number of videos, PowerPoint slides, scripted demons and hands-on labs on a variety of web development topics at http://visitmix.com/university/ .

Answer: Either by gulping air into their stomach and intestines and floating across, or by sinking to the bottom of shallow water and using their claws to walk across. They can hold their breath for about six minutes. Source: The 365 amazing...

If you just open SQL Server Management Studio and expand the System Databases node, you’ll see four databases – master, model, msdb and tempdb (just like in SQL 2000). However, SQL Server 2005 has a new system database called the ‘Resource’ database...

Did you know that on the tiny Taquile Island in Lake Titicaca (on the border of Peru and Bolivia), you can quickly figure out who’s OPP without sneaking sidelong glances at ring fingers. It’s all on the head, in the form of bright, complexly patterned...

More and more web sites are using rounded corners on spans (labels) and panels. And since AjaxControlToolkit makes it sinfully easy to do, before I start using it extensively, I decided to do some profiling to see the cost of that extender. Here...

Supermarkets and pharmacies offer discounts when you sign up for their loyalty cards. But every time you swipe your card, you purchases are recorded for marketing purposes. These buying records are now being sold to life and health insurance companies...

Say, you’ve added a few extender controls to make your AJAX-enabled web site look very ecstatically appealing to the end users. And now you’d like to evaluate the cost of beautifying your site in such manner. Measuring the additional page size bytes is...

If you subtract a three digit number (all digits unique) from another three digit number whose digits are reverse of the first number, you end up with another three digit number consisting of same digits, but in a different order: xyz – zyx = zxy...

If you have multiple UpdatePanel controls on a page, and your Page_Load has a lot of data retrieval and rendering logic, you may want to know exactly which UpdatePanel is being updated, and execute only relevant code segments to optimize performance....

One person says to another: “I’ve been travelling so much, I reach for the seat belt when I sit down at the movies.” Source: 2007 Calendar For Women Who Do Too Much

Not sure why, but all grid sorting examples I’ve been coming across have at least something hardcoded – be it the sort column name, the data source display member, or something else. Also, the samples I’ve seen create a member variable to hold the information...

I created an application that allows you to calculate and compare the future estate value given two scenarios: Sell a house and reinvest the proceeds at a fixed percentage for specified number of years and re-investing earned interest Keep the...