类继承了通用字典< string，IFoo>和接口 [英] Class inherits generic dictionary<string, IFoo> and Interface

问题描述

我有一个类继承了一个通用字典和接口

  public class MyDictionary：Dictionary< string，IFoo> ;, IMyDictionary 
 {
} 
  

问题是这个类的消费者正在寻找对于接口的'.Keys'和'.Values'属性，我添加了：

  ///< summary> 
 /// 
 ///< / summary> 
 ICollection< string>钥匙{get; } 
 
 ///< summary> 
 /// 
 ///< / summary> 
 IEnumerable< IFoo>值{get; } 
  

到界面。

现在，实现需要有这个，但是当我实现这些时，我得到这个错误：

关键字new是必需的，因为它隐藏了属性Keys ..

那么我需要做什么。我应该在这些get属性的前面添加一个new吗？

解决方案

另一种选择是更改接口为：

  public interface IMyDictionary 
 {
 ///< summary> 
 /// 
 ///< / summary> 
 Dictionary< string，IFoo> .KeyCollection Keys {get; } 
 
 ///< summary> 
 /// 
 ///< / summary> 
 Dictionary< string，IFoo> .ValueCollection Values {get; } 
} 
  

这种方式界面已经由字典实现，为您节省了麻烦再次实现这些属性，它不会隐藏或覆盖原始实现。

I have a class that inherits a generic dictionary and an inteface

public class MyDictionary: Dictionary<string, IFoo>, IMyDictionary
{
}

the issue is that consumers of this class are looking for the '.Keys' and ".Values" properties of the interface so i added:

    /// <summary>
    /// 
    /// </summary>
    ICollection<string> Keys { get; }

    /// <summary>
    /// 
    /// </summary>
    IEnumerable<IFoo> Values { get; }

to the interface.

Now, the implementation needs to have this as well but when i implement these, i get this error:

"The keyword new is required because it hides property Keys . .. "

so what do i need to do. Should i be adding a "new" in front of these get properties?

解决方案

Another option would be to change the types on the interface to be:

public interface IMyDictionary
{
    /// <summary>
    /// 
    /// </summary>
    Dictionary<string, IFoo>.KeyCollection Keys { get; }

    /// <summary>
    /// 
    /// </summary>
    Dictionary<string, IFoo>.ValueCollection Values { get; }
}

That way the interface is already implemented by the dictionary saving you the trouble of implementing the properties again, and it doesn't hide or cover the original implementation.

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