private IList <IdentityRoleViewModel> GetRoleViewModels(ApplicationUser user = null) { IList <IdentityRoleViewModel> roleViewModels; if (user == null) { var allRoles = _rolesRepository.Get(); roleViewModels = ( from IdentityRole identityRole in allRoles select new IdentityRoleViewModel { RoleId = identityRole.Id, RoleName = identityRole.Name, }).ToList(); } else { var allRoles = _rolesRepository.Get().ToList(); var userRoles = user.UserRoles; roleViewModels = ( from IdentityRole identityRole in allRoles select new IdentityRoleViewModel { RoleId = identityRole.Id, RoleName = identityRole.Name, HasRole = userRoles.Select(x => x.Id).Contains(identityRole.Id) }).ToList(); } return(roleViewModels); }