C＃多个索引器 [英] C# Multiple Indexers

问题描述

是否有可能有类似以下内容：

Is it possible to have something like the following:

class C
{
    public Foo Foos[int i]
    {
        ...
    }

    public Bar Bars[int i]
    {
        ...
    }
}

如果不是，那么是有一些方法我能做到这一点？我知道我可以做函数调用的getFoo（int i）以和getBar（int i）以，但我希望能与性能做到这一点。

If not, then are what are some of the ways I can achieve this? I know I could make functions called getFoo(int i) and getBar(int i) but I was hoping to do this with properties.

推荐答案

不是在C＃，没有

不过，您可以随时返回从属性集合，如下所示：

However, you can always return collections from properties, as follows:

public IList<Foo> Foos
{
    get { return ...; }
}

public IList<Bar> Bars
{
    get { return ...; }
}

&IList的LT; T>有一个索引，所以你可以写以下内容：

IList<T> has an indexer, so you can write the following:

C whatever = new C();
Foo myFoo = whatever.Foos[13];

在行返回...;你可以返回任何实现IList< T> ;,但你可能什么返回围绕您的收藏只读的包装，看AsReadOnly（）方法。

On the lines "return ...;" you can return whatever implements IList<T>, but you might what to return a read-only wrapper around your collection, see AsReadOnly() method.

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