Get list of users with assigned roles in asp.net identity 2.0

Not an expert, but ...

There seemed to be no built in funcionality for this in Identity and I could not get it work from built in Roles also (it seems to not work with claims based Identity).

So I ended up doing something like this:

var users = context.Users            .Where(x => x.Roles.Select(y => y.Id).Contains(roleId))    .ToList();

• x.Roles.Select(y => y.Id) gets a list of all role ids for user x
• .Contains(roleId) checks if this list of ids contains necessary roleId

I find the role by the role name input. After, I find list users by id of the role.

public List<ApplicationUser> GetUsersInRole(string roleName){ var roleManager =   new RoleManager<IdentityRole>(new RoleStore<IdentityRole>(new  ApplicationDbContext())); var role = roleManager.FindByName(roleName).Users.First(); var usersInRole =   Users.Where(u => u.Roles.Select(r => r.RoleId).Contains(role.RoleId)).ToList(); return usersInRole;}

If you want to avoid using the context directly you can use the RoleManager with the following snippet

roleManager.FindByName("Administrator").Users

or

roleManager.FindByName("CanEdit").Users

For a short discussion about this topic have a look at the this thread