我无法在Nop.Services.Customers.Customer Service中创建静态方法

Question

我尝试在 Nop.Services.Customers.CustomerService 中创建静态函数以获取

nop数据库中的客户列表。我想在外部控制台中调用此函数

的应用。但 CustomerService 类不包含默认构造函数。

请参阅构造函数代码。

  #region Ctor

    /// <summary>
    /// Ctor
    /// </summary>
    /// <param name="cacheManager">Cache manager</param>
    /// <param name="customerRepository">Customer repository</param>
    /// <param name="customerRoleRepository">Customer role repository</param>
    /// <param name="customerAttributeRepository">Customer attribute repository</param>
    /// <param name="encryptionService">Encryption service</param>
    /// <param name="newsLetterSubscriptionService">Newsletter subscription service</param>
    /// <param name="rewardPointsSettings">Reward points settings</param>
    /// <param name="customerSettings">Customer settings</param>
    /// <param name="eventPublisher"></param>
    public CustomerService(ICacheManager cacheManager,
        IRepository<Customer> customerRepository,
        IRepository<CustomerRole> customerRoleRepository,
        IRepository<CustomerAttribute> customerAttributeRepository,
        IEncryptionService encryptionService, INewsLetterSubscriptionService newsLetterSubscriptionService,
        RewardPointsSettings rewardPointsSettings, CustomerSettings customerSettings,
        IEventPublisher eventPublisher)
    {
        _cacheManager = cacheManager;
        _customerRepository = customerRepository;
        _customerRoleRepository = customerRoleRepository;
        _customerAttributeRepository = customerAttributeRepository;
        _encryptionService = encryptionService;
        _newsLetterSubscriptionService = newsLetterSubscriptionService;
        _rewardPointsSettings = rewardPointsSettings;
        _customerSettings = customerSettings;
        _eventPublisher = eventPublisher;
    }

    #endregion

当尝试调用静态函数时，Fileds会显示错误。

请参阅字段

  #region Fields

    private readonly IRepository<Customer> _customerRepository;
    private readonly IRepository<CustomerRole> _customerRoleRepository;
    private readonly IRepository<CustomerAttribute> _customerAttributeRepository;
    private readonly IRepository<FileUpload> _fileuploadRepository;
    private readonly IEncryptionService _encryptionService;
    private readonly ICacheManager _cacheManager;
    private readonly INewsLetterSubscriptionService _newsLetterSubscriptionService;
    private readonly RewardPointsSettings _rewardPointsSettings;
    private readonly CustomerSettings _customerSettings;
    private readonly IEventPublisher _eventPublisher;

    #endregion

我在CustomerService类中创建了一个默认值。

 public CustomerService()
 {
 }

并在CustomerService中创建新功能

 public virtual List<Customer> GetClients()
    {
        var _cust = _customerRepository.Table;

        return _cust.ToList();
    }

并在外部控制台应用程序中调用此函数

    private static CustomerService _customerService = new CustomerService();
    static void Main(string[] args)
    {
        List<Customer> cust = _customerService.GetClients();

        ThreadStart start = new ThreadStart(ProcessMails);
        thread = new Thread(start);
        ProcessStatus = 1;
        thread.Start();
    }

但是当我调用此函数时，它会显示空错误。

在Nop.Core中创建一个函数并在外部应用程序中调用是不可能的？

请帮忙。

Answer 1

从课程定义来看，这是不可能的。静态方法适用于类型，而不适用于实例，因此可以在静态方法中使用的成员变量也应该是静态的。