如何使用activedirectorymembershipprovider在asp.net mvc应用程序中实现角色层次结构

In my asp.net mvc app i am using the activedirectorymembershipprovider. In the active directory i have created a couple of roles (groups) similar to, for simplicity of this example, "normal" and "administrator".In my asp.net mvc app i am using the activedire