Kevin Hazzard
May 17 2010
Code Contracts Part 1 - Introduction
This blog post is part of a series concerning Microsoft Code Contracts. For a complete series directory, please refer to the following list. Articles without a link will be published soon.
Mar 21 2010
Windows Mobile Marketplace
I signed up for my Windows Mobile Marketplace account while I was at MIX 2010. I was somewhat disappointed that after I shelled out the $99 for the first year, my Windows Phone 7 Series applications can't be uploaded until sometime in the summer of 2010. I don't have any real interest in writing Windows Mobile 6.5 applications, to be honest. I'm only concerned with writing for the Windows Phone 7 Series because:
Nov 11 2009
Hampton Roads .NET User Group November 2009 Presentation
I presented a talk called "Enterprise Data Validation" at the Hampton Road .NET User Group this evening. The premise was simple. Data validation needs to happen in all the tiers of a modern application but the validation rules should be defined only once to avoid synchronization errors. In this talk, I showed how to extend SQL Server using extended properties to store regular expressions for data validation as column metadata. I also showed how to add a regular expression matcher to SQL Server using the SQL CLR and how to add check constraints to invoke the regular expression parser. Then I built a WCF service to query the validation metadata to make it available in other application tiers. I quickly assembled WCF service host and client showed how you could bring all of the elements together to create a working Enterprise Validation solution.
Oct 24 2009
SQL UNIQUEIDENTIFIERs are Really Big Integers
I wrote a blog post called How SQL Server Sorts the UNIQUEIDENTIFIER Type and another one called Ordering the SQL UNIQUEIDENTIFIER Type Numerically Correct for Reporting a while back. As a result, I get a lot of e-mails from people struggling with UNIQUEIDENTIFIER values in Microsoft SQL Server. That's cool because I like helping other developers. The mistake that most people make when working with this data type is treating them like strings. However, UNIQUEIDENTIFIERS are absurd looking integers, really big ones. We show them in hexadecimal format to make them more compact which adds to their absurdness, I suppose.