Question

Interface IWorkPerson
{
    public string FirstName {get; set;}
    public string LastName { get; set; }
    public string WorkPhone { get; set; }
}

interface IHomePerson
{
    public string FirstName {get; set;}
    public string LastName { get; set; }
    public string HomePhone { get; set; }
}

public class Person : IWorkPerson, IHomePerson
{
    public string FirstName {get; set;}
    public string LastName { get; set; }
    public string WorkPhone { get; set; }
    public string HomePhone { get; set; }
}

如何在C＃中制作Person类实现IWorkPerson和IHomePerson？

编译器抱怨含糊不清的引用。

Answer 1

请看explicit implementation of intefaces。

来自参考链接：

// explicit1.cs
interface IDimensions 
{
   float Length();
   float Width();
}

class Box : IDimensions 
{
   float lengthInches;
   float widthInches;

   public Box(float length, float width) 
   {
      lengthInches = length;
      widthInches = width;
   }
   // Explicit interface member implementation: 
   float IDimensions.Length() 
   {
      return lengthInches;
   }
   // Explicit interface member implementation:
   float IDimensions.Width() 
   {
      return widthInches;      
   }

   public static void Main() 
   {
      // Declare a class instance "myBox":
      Box myBox = new Box(30.0f, 20.0f);
      // Declare an interface instance "myDimensions":
      IDimensions myDimensions = (IDimensions) myBox;
      // Print out the dimensions of the box:
      /* The following commented lines would produce compilation 
         errors because they try to access an explicitly implemented
         interface member from a class instance:                   */
      //System.Console.WriteLine("Length: {0}", myBox.Length());
      //System.Console.WriteLine("Width: {0}", myBox.Width());
      /* Print out the dimensions of the box by calling the methods 
         from an instance of the interface:                         */
      System.Console.WriteLine("Length: {0}", myDimensions.Length());
      System.Console.WriteLine("Width: {0}", myDimensions.Width());
   }
}

Answer 2

从界面声明中删除“公共”修饰符后，在.Net 2.0,3.0,3.5或4.0下编译精细的VS2010。您使用的是什么版本的Visual Studio（或者您使用的是Mono？）以及您要定位的.Net框架的哪个版本？

此代码编译绝对干净：

public interface IWorkPerson
{
    string FirstName { get; set; }
    string LastName  { get; set; }
    string WorkPhone { get; set; }
}
public interface IHomePerson
{
    string FirstName { get; set; }
    string LastName  { get; set; }
    string HomePhone { get; set; }
}
public class Person : IWorkPerson , IHomePerson
{
    public string FirstName { get; set; }
    public string LastName  { get; set; }
    public string WorkPhone { get; set; }
    public string HomePhone { get; set; }
}

Answer 3

您必须声明显式实现：

public class Person : IWorkPerson, IHomePerson
{
    public string IWorkPerson.FirstName {get; set;}
    public string IWorkPerson.LastName { get; set; }
    public string IHomePerson.FirstName {get; set;}
    public string IHomePerson.LastName { get; set; }
    public string WorkPhone { get; set; }
    public string HomePhone { get; set; }
}

Answer 4

class Person : IWorkPerson, IHomePerson 
{
    public string IWorkPerson.FirstName {get; set; }
    public string IHomePerson.FirstName {get; set; }
    // etc...
 }

这称为显式实现，它是您消除相同界面成员歧义的方式。

Answer 5

在您的班级中提供IWorkPerson.Foo和IHomePerson.Foo的实现。

我希望那些不是真正的接口。两者都应该从一个公共接口继承，我不理解一个Person是HomePerson和WorkPerson的抽象。听起来它应该是一个枚举，而不是一个接口。

C＃接口 - 我该怎么做？

5 个答案: