http://blogs.msdn.com/b/jmstall/archive/2007/08/05/making-required-properties-less-annoying.aspxBe wary of "required" properties that must be explicitly set correctly in order for the object to function (especially if it's not obvious). I recently got burned by this, and it's certainly a frustrating problem to diagnose. In my case, the functionen-USTelligent Evolution Platform Developer Build (Build: 5.6.50428.7875)http://blogs.msdn.com/b/jmstall/archive/2007/08/05/making-required-properties-less-annoying.aspx#4241752Sun, 05 Aug 2007 18:41:15 GMT91d46819-8472-40ad-a661-2c78acb4018c:4241752Jason Haley<img src="http://blogs.msdn.com/aggbug.aspx?PostID=4241752" width="1" height="1">http://blogs.msdn.com/b/jmstall/archive/2007/08/05/making-required-properties-less-annoying.aspx#4240632Sun, 05 Aug 2007 16:43:34 GMT91d46819-8472-40ad-a661-2c78acb4018c:4240632Doug<p>Some of the same principles that apply to UI design also apply to framework design.</p> <p>Most users are not expert and even the experts can use help.</p><div style="clear:both;"></div><img src="http://blogs.msdn.com/aggbug.aspx?PostID=4240632" width="1" height="1">