如何命名元组属性? | 如何命名元组属性

本文介绍了如何命名元组属性?的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

方法和可能"如何从返回带有参数名称的元组类型的方法中返回，例如

How and "could be" organized return from the method which returns tuple type with the name of parameters,as an example

private static Tuple<string, string> methodTuple()
{
    return new {Name = "Nick", Age = "Twenty"}; /*exception because need to new Tuple<string, string>(){Item1 = "Nick", Item2 = "Twenty"}o*/
}

并调用 methodTuple.Name 之类的参数，而不是 methodTuple.Item1 .... N

and call parameters like methodTuple.Name not like methodTuple.Item1....N

这可能吗?

UPD:我想创建具有命名参数的对象，而没有新的命名类型.

UPD: I want to create object with named parameters without new named type.

推荐答案

您需要声明一个帮助程序类.

You need to declare a helper class to do so.

public class MyResult
{
    public string Name { get; set; }
    public string Age { get; set; }
}

您要返回的是匿名类型.顾名思义，您不知道它的名字，因此无法声明返回它的方法.

What you're trying to return is an anonymous type. As the name suggests you don't know what its name is, so you can't declare your method to return it.

匿名类型(C#编程指南)

更新

C#7引入了该语言内置的元组支持，并带有命名元组

C#7 introduces Tuple support built into the language and it comes with named tuples

(string name, int age) methodTuple()
{
    (...)
}

在docs.microsoft.com上了解更多信息:https://docs.microsoft.com/zh-cn/dotnet/articles/csharp/csharp-7#tuples

Read more on docs.microsoft.com: https://docs.microsoft.com/en-us/dotnet/articles/csharp/csharp-7#tuples

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