ASP.NET标识创建多个用户

Question

我正在运行此代码来为我的数据库设定种子，但数据没有被写入。单独添加用户（在ForEach循环之外）时，它可以正常工作。是否有任何理由不起作用

List<String> usersList = GetAllUsers();

        foreach (string s in usersList)
        {
            var newUser = new ApplicationUser();
            newUser.UserName = s;
            newUser.Email = s;
            var userResult = UserManager.Create(newUser, "greenford");

            //Add User Role Applicant
            if (userResult.Succeeded)
            {
                var result = UserManager.AddToRole(newUser.Id, "Applicant");
            }
        }