private async void SetPassword()
    {
            var provider = new DpapiDataProtectionProvider("RDSupport");

            string userId = Support.Instance.GetUserIDDatabase(_currentUser);

            UserStore<IdentityUser> userStore = new UserStore<IdentityUser>();
            UserManager<IdentityUser> manager = new UserManager<IdentityUser>(userStore);
            IdentityUser user = manager.FindById(userId);

            manager.UserTokenProvider = new DataProtectorTokenProvider<IdentityUser, string>
                (provider.Create("UserToken")) as IUserTokenProvider<IdentityUser, string>;

            string token = manager.GeneratePasswordResetToken(userId);

            manager.ResetPassword(userId, token, _newPassword);

            string hashedNewPassword = manager.PasswordHasher.HashPassword(_newPassword);

            await userStore.SetPasswordHashAsync(user, hashedNewPassword);
            await userStore.UpdateAsync(user);

            ScriptManager.RegisterClientScriptBlock(Page, GetType(), "myalert", "alert('Password changed successfully!');", true);

            _success = true;
        }