private async Task SignInAsync(ApplicationUser user, bool isPersistent)
        {
            AuthenticationManager.SignOut(DefaultAuthenticationTypes.ApplicationCookie);

            ///Open Question- Hear it create claimIdentity. But we nothing add as such Claims but just User object.
            //public virtual Task<ClaimsIdentity> CreateIdentityAsync(TUser user, string authenticationType);

            var identity = await UserManager1.CreateIdentityAsync(user, DefaultAuthenticationTypes.ApplicationCookie);

            //var identity = await UserManager1.CreateAsync(user);//, DefaultAuthenticationTypes.ApplicationCookie);

            AuthenticationManager.SignIn(new AuthenticationProperties()
            {
                IsPersistent = isPersistent
            }, identity);
        }
 protected void UserManagerView_Activate(object sender, EventArgs e)
 {
     UserManager1.Reset();
 }