尝试覆盖类列属性的Subsonic 3 / ASP.net MVC问题

I am using Subsonic 3 (T4 template) to generate the models for my mvc app. However the default template does not allow for nullable columns, so when I go to save the record it errors out if a nullable datetime column is blank. (I am using Subsonic 3 (T4 template) to generate