只读，只写在接口自动属性 [英] Read only and write only automatic properties in Interface

问题描述

我已经读了自动实现属性不能只读或只写。他们只能读写。

然而，一边学习界面，我碰到FOLL。代码，它创建了一个只读/只写和读写自动属性的类型。那是可以接受的？

 公共接口IPointy 
 {
 //一个在界面看起来像读写属性： 
 // retType PROPNAME {搞定;组; } 
 //而在接口的只写属性是：
 // retType PROPNAME {设置; } 
字节点{搞定; } 
} 
  

解决方案

这是不是自动实现。接口不包含执行。

这是一个声明，表明该接口 IPointy 需要的类型的属性字节，名为分数，与公共的getter 的

---

您可以实现以任何方式需要时只要界面是有公共的getter;无论是通过自动属性：

 公共类Foo：IPointy 
 {
公共字节点{得到;设置;} 
} 
  

请注意二传手仍可以是私有的：

 公共类酒吧：IPointy 
 {
公共字节点{搞定;私人集;} 
} 
  

或者，您可以明确地写一个getter：

 公共类巴兹：IPointy 
 {
专用字节_points; 
 
公共字节点
 {
 {返回_points; } 
} 
} 
  

I had read that auto implemented properties cannot be read only or write only. They can only be read-write.

However, while learning interfaces I came across foll. code, which creates a read only / write only and read-write type of automatic properties. Is that acceptable?

 public interface IPointy 
    {   
    // A read-write property in an interface would look like: 
    // retType PropName { get; set; }   
    //  while a write-only property in an interface would be:   
    // retType PropName { set; }  
      byte Points { get; } 
    } 

解决方案

That is not auto-implemented. Interfaces do not contain implementation.

It's a declaration that the interface IPointy requires a property of type byte, named Points, with a public getter.

---

You can implement the interface in any way necessary as long as there is a public getter; whether by an auto-property:

public class Foo: IPointy
{
    public byte Points {get; set;}
}

Note the setter can still be private:

public class Bar: IPointy
{
    public byte Points {get; private set;}
}

Or, you can explicitly write a getter:

public class Baz: IPointy
{
    private byte _points;

    public byte Points
    {
        get { return _points; }
    }
}

这篇关于只读，只写在接口自动属性的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！