如何使用接口訪問實現它的類？

Question

更新：我最初的計劃是將它用於上傳和向下轉換。我只是希望我的方法能夠根據服務器的不同響應返回不同的類。

我想了解高級界面的使用。可以說我有一個跨臉像波紋管：

public interface IMyInterface 
{ 

} 

我有兩個類實現像波紋管上面的接口。

public class A:IMyInterface 
{ 
    public string AName { get; set; } 
} 

public class B : IMyInterface 
{ 
    public string BName { get; set; } 
} 

現在我有一個像下面四種方法：

public IMyInterface CreateRawResponse() 
{ 
    if (condition) 
    { 
     return new A 
     { 
      AName = "A" 
     }; 
    } 
    else 
    { 
     return new B 
     { 
      BName = "B" 
     }; 
    } 
} 

public string CreateResponse(IMyInterface myInterface) 
{ 
    return myInterface. // I would like to access the properties of the  parameter, since its actually a class 
} 
public string CreateResponseForA(A a) 
{ 
    return a.AName; 
} 

public string CreateResponseForB(B b) 
{ 
    return b.BName; 
} 

最後我想這樣調用方法：

var obj = new Program(); 
var KnownResponse = obj.CreateRawResponse(); // Lets say I know I will get type A 
var test1 = obj.CreateResponseForA(KnownResponse); //But I can't call like this, because CreateResponseForA() is expecting IMyInterface as parameter type. 
var UknownResponse = obj.CreateRawResponse(); // Lets say I don't know the response type, all I know is it implemented IMyInterface 

var test2 = obj.CreateResponse(UknownResponse); // I can call the method but can access the properties of the calling type in CreateResponse() mehtod. 

如何處理這種情況？我相信可能有一些設計模式可以解決這個問題，但我不習慣設計模式。任何建議都會非常有幫助。

Answer 1

接口應該有共同的所有成員實現它

public interface IMyInterface { 
    string Name { get; set; } 
} 

因此

public class A:IMyInterface 
{ 
    public string Name { get; set; } 
} 

public class B : IMyInterface 
{ 
    public string Name { get; set; } 
} 

，然後說你情況變得。

public IMyInterface CreateRawResponse() 
{ 
    if (condition) 
    { 
     return new A 
     { 
      Name = "A" 
     }; 
    } 
    else 
    { 
     return new B 
     { 
      Name = "B" 
     }; 
    } 
} 

public string CreateResponse(IMyInterface myInterface) 
{ 
    return myInterface.Name; 
} 
public string CreateResponseForA(A a) 
{ 
    return a.Name; 
} 

public string CreateResponseForB(B b) 
{ 
    return b.Name; 
} 

這也如果你想一個屬性是提供一個接口，將其添加到界面，然後進行重構，以

public string CreateResponse(IMyInterface myInterface) 
{ 
    return myInterface.Name; 
} 
public string CreateResponseForA(A a) 
{ 
    return CreateResponse(a); 
} 

public string CreateResponseForB(B b) 
{ 
    return CreateResponse(b); 
}