化繁为简 定义权限

        public static class Tickets
        {
            public const string GroupName = "Tickets";

            public const string CreateTicket = "tickets:ticket:create";
            public const string NameOfCreateTicket = "Create ticket";

            public const string EditTicket = "users:user:edit";
            public const string NameOfEditTicket = "Edit ticket";

            public const string DeleteTicket = "tickets:ticket:delete";
            public const string NameOfDeleteTicket = "Delete ticket";

        }

public GetPermissions(){
return new List<PredefinedPermission>(){
     new PredefinedPermission(Tickets.ViewAllTickets,Tickets.NameOfViewTickets,Tickets.GroupName),
                new PredefinedPermission(Tickets.CreateTicket,Tickets.NameOfCreateTicket,Tickets.GroupName),
                new PredefinedPermission(Tickets.EditTicket,Tickets.NameOfEditTicket,Tickets.GroupName),
                new PredefinedPermission(Tickets.DeleteTicket,Tickets.NameOfViewTickets,Tickets.GroupName),
}}

第一个地方因为改进成

使用Enum

	[Description("Tickets")]
	public enum Tickets{
	[Description("View all ticket")]
ViewAll,

Edit,

Delete,

}

第二个改成反射的方式来获取所有的写好的权限。