写入List< KeyValuePair< string，List< string>>到文本文件?

问题描述

我想知道是否有人知道写这个的好方法.我有一个键值对列表.键是一个简单的字符串，值是一个字符串列表.我正在尝试将其写到输出文件中，如下所示:

I was wondering if anyone knows a good way of writing this. I have a list of key value pairs. The key is a simple string and the value is a list of strings. I'm trying to write it out to an output file like so:

        File.WriteAllLines(@"C:\Users\S\Downloads\output.txt",
            xEleAtt.Select(x => x.Key + " Val's: " + x.Value).ToArray());

但是我得到的输出(有点我想会发生的)是这样的:

However the output I get (which is kinda what I thought would happen) is this:

Queue0 Val:System.Collections.Generic.List`1 [System.String]

Queue0 Val's: System.Collections.Generic.List`1[System.String]

Queue1 Val:System.Collections.Generic.List`1 [System.String]

Queue1 Val's: System.Collections.Generic.List`1[System.String]

Queue2 Val的:System.Collections.Generic.List`1 [System.String]

Queue2 Val's: System.Collections.Generic.List`1[System.String]

有没有人知道我如何使用以我写的方式编写的linq打印列表的内容?

Has anyone got an idea of how I can print the contents of the list using linq written in the way i've wrote it?

推荐答案

您可以使用 String.Join 将您的List<string>连接到具有给定分隔符的单个string中:

You could use String.Join to concatenate your List<string> into a single string with a given delimiter:

File.WriteAllLines(@"C:\Users\S\Downloads\output.txt",
        xEleAtt.Select(x => x.Key + " Val's: " +
        string.Join(",", x.Value.ToArray()).ToArray());

这篇关于写入List< KeyValuePair< string，List< string>>到文本文件?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！