https://www.dotnetzone.gr:443/cs/blogs/abekiaris/archive/2010/09/13/non-constant-attributes-parameters.aspxGiven my previous post Simple maths can boost your app performance did some more thoughts over it in this post  .Net compiler says no!! An attribute argument must be a constant expression, typeof expression or array creation expression of an attributeelCommunityServer 2.1 SP3 (Build: 20423.1)