public void AddUserToGroup(string userId, int GroupId)
{
var group = _db.Groups.Find(GroupId);
var user = _db.Users.Find(userId);
var userGroup = new ApplicationUserGroup()
{
Group = group,
GroupId = group.Id,
User = user,
UserId = user.Id
};
foreach (var role in group.Roles)
{
_userManager.AddToRole(userId, role.Role.Name);
}
user.Groups.Add(userGroup);
_db.SaveChanges();
}