asp Identity 2.0 adding new roles and adding user to roles

问题

I'm having trouble understanding the new Identity stuff. I'm trying to figure out how to add new roles and add user's to those roles. I'm trying to create a role management page and a user management page for my application and need to be able to do those two things. Everytime i try to add a role to a user like this: System.Web.Security.Roles.AddUserToRole("Andy", "admin"); I get "The Role Manager feature has not been enabled." I don't have a custom role provider and i tried turning role manager to enabled but just got an error about not having a role provider. I figured Identity had all this built in already? Can somebody help me through this?

回答1:

System.Web.Security is the old ASP.NET Membership framework. ASP.NET Identity is in the namespace Microsoft.AspNet.Identity. Use a RoleManager to create roles, and a UserManager to add users to roles.

using (var roleManager = new RoleManager<IdentityRole>(new RoleStore<IdentityRole>(context)) 
{
    roleManager.Create(new IdentityRole("Administrator"));
}

using (var userManager = new UserManager<ApplicationUser>(new UserStore<ApplicationUser>(context)))
{
    var user = new ApplicationUser { UserName = "admin" };
    userManager.Create(user, "admin321");
    userManager.AddToRole(user.Id, "Administrator");
}

来源：https://stackoverflow.com/questions/23187028/asp-identity-2-0-adding-new-roles-and-adding-user-to-roles