Asp.Net Core Identity in role-based authorization

　　We have already introduced before the authorization is to add a simple property or on the Controller Authorize Action to achieve that role is authorized to specify parameters specify Authorize Roles of.

　　Let's look at three ways to role-based access:

　　1, specifies that only role for the user to access the Admin　

[Authorize(Roles ="Admin") ]

　　2, assign a role to Admin users can ask or User

[Authorize(Roles ="Admin,User") ]

　　3, have both Admin and User roles can access role

[Authorize(Roles ="Admin") ]
[Authorize(Roles ="User") ]