在C調用超級構造函數＃

Question

我有類，如AccountsController，ProductsController等都從BaseController繼承。 Unity根據需要設置我的服務。這些類也都需要_sequence服務。因爲這是所有類的通用要求，所以我想在BaseController中對其進行編碼。

public class AccountsController : BaseController 
{ 
    public AccountsController(
     IService<Account> accountService) { 
     _account = accountService; 
    } 

public class ProductsController : BaseController 
{ 
    public ProductsController(
     IService<Account> productService) { 
     _product = productService; 
    } 


public class BaseController : Controller 
{ 
    public IService<Account> _account; 
    public IService<Product> _product; 
    protected ISequenceService _sequence; 

    public BaseController(
     ISequenceService sequenceService) { 
     _sequence = sequenceService; 
    } 

但我該怎麼做？我應該在每個AccountsController和ProductsController的構造函數中設置對BaseController的調用嗎？

Answer 1

你可以連續constructors：

public class ProductsController : BaseController 
{ 
    public ProductsController(
     IService<Account> productService) : base(productService) 
    { 
     _product = productService; 
    } 
} 

注意，鏈接BaseController（使用base關鍵字）已經通過了productService參數，堅韌這可以是任何東西。

更新：

您可以執行以下操作（差芒依賴注入）：

public class ProductsController : BaseController 
{ 
    public ProductsController(
     IService<Account> productService) : base(new SequenceService()) 
    { 
     _product = productService; 
    } 
} 

或者，通過在ISequenceService依賴通過你的繼承類型：

public class ProductsController : BaseController 
{ 
    public ProductsController(
     IService<Account> productService, ISequenceService sequenceService) 
     : base(sequenceService) 
    { 
     _product = productService; 
    } 
}