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Notes from a dark corner

Debugging ASP.NET, the CLR and anything that uses clock cycles.

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Object doesn't support this property or method
This is a short post about a very strange support case I had. I should start by mentioning however that you could see the same error for other reasons, not least of which because you’ve mistyped the property or method name :-). In this particular case Read More...
Make sure your test data is right for the job
I helped out one of colleagues recently whose customer's application hit high CPU in one test environment but not another. The reason for that was that contrary to what they thought, the test data used in one environment was not the same as in the other. Read More...
Link: Useful article on ASP.NET Performance...
Over on the "ACE Team" blog there's a useful blog post with some performance tips for ASP.NET sites . The point about batch compilation and Debug="true" was certainly correct for version 1.1 but I think in ASP.NET 2.0 they are decoupled Read More...
Internet Explorer 8 Beta 2 now available
As it says in the title of the post. Read about it on the IE team blog . Read about it on the portal page . Read my previous post on IE8 compatibility. Read More...
Internet Explorer 8 and web site compatibility
With Internet Explorer 8 development well advanced and beta 2 due in August it is important to be aware, especially if you develop or maintain any web sites, that IE8 will by default operate in a strict standards compliance mode. One consequence of this Read More...
Interesting tool for monitoring of client side of web applications
Microsoft Research have released a very interesting looking prototype of a tool for investigating the performance of the client side of web applications that use JavaScript on the client. You can download it here and there is a usage walkthrough here Read More...
Client side testing of web applications
I've added a link to WatiN to my Testing Web Applications page. I've not used it extensively myself but I have worked with customers who have used it very successfully for performing automated testing of their web UIs. Cheers Doug Read More...
Testing Web Applications
You've written your web application and tested it to ensure it all works but how do you know it will be able to take the strain when you launch it on an eager world? Load testing. That's the key. There are many web application load testing tools around. Read More...
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