如何从数组和列表中制作带有键的字典？

发布于 2024-11-04 19:54:46 字数 466 浏览 1 评论 0原文

我有这两个集合：

      List<string> files =
            Directory.GetFiles(FilePath).ToList().Select(file => new FileInfo(file).Name).ToList();

        string[] dirs = Directory.GetDirectories(FilePath);

但是，我想将这两个集合添加到一个空字典中，因此我有一个包含路径和文件的大字典。我不确定的是，如何/在哪里指定密钥？

对于文件，我希望文件名作为键，对于目录，我希望最后一个目录（例如 a/b/c 中的 c）作为键。我知道如何使用 FileInfo/DirectoryInfo 类获取此信息，但不确定如何将其包含在从上面创建字典中？

我正在使用 .NET V3.5 并且 LINQ 很好。

谢谢

原文

I have these two collections:

      List<string> files =
            Directory.GetFiles(FilePath).ToList().Select(file => new FileInfo(file).Name).ToList();

        string[] dirs = Directory.GetDirectories(FilePath);

However, I'd like to add both of these to an empty dictionary, so I have a large dictionary with paths and files. The thing I am not sure of, how/where do I specify the keys?

For files, I want the filename as the key, and for the directories, I want the last directory (e.g. c in a/b/c) to be the key. I know how to get this information with FileInfo/DirectoryInfo classes, but not sure how to include this in creating a dictionary from the above?

I'm using .NET V3.5 and LINQ is fine.

Thanks

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焚却相思 2024-11-11 19:54:46

对于文件，您可以

var  filesDictonary = Directory.GetFiles(FilePath)
                                      .Select(file => new FileInfo(file))
                                      .ToDictionary(f => f.Name, f => f);

对目录执行以下操作：

var directoriesDictonary = Directory.GetDirectories(FilePath)
                                     .Select(d  => new DirectoryInfo(d))
                                     .ToDictionary(d => d.Name, d => d);

For files, you can do

var  filesDictonary = Directory.GetFiles(FilePath)
                                      .Select(file => new FileInfo(file))
                                      .ToDictionary(f => f.Name, f => f);

for directories,

var directoriesDictonary = Directory.GetDirectories(FilePath)
                                     .Select(d  => new DirectoryInfo(d))
                                     .ToDictionary(d => d.Name, d => d);

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挽你眉间 2024-11-11 19:54:46

如果您已经拥有所需的信息，并且知道如何正确配对。您只需使用此语句将其添加到字典中即可。

Dictionary<string, string> myDict = new Dictionary<string, string>();
myDict.Add(file, directory);

除非我不理解你？您想问如何添加它们吗？或者如何正确地将文件与目录配对？

If you already have the information you need, and you know how to pair it up properly. You just use this statement to add it to the dictionary.

Dictionary<string, string> myDict = new Dictionary<string, string>();
myDict.Add(file, directory);

Unless I'm not understanding you? Are you asking how to add them? Or how to pair the file with the directory properly?

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唠甜嗑 2024-11-11 19:54:46

到目前为止，我最喜欢 Bala R 的 LINQ 答案（并且他得到了我的支持），但值得一提的是，在一般情况下，当您想要组合 List< /code> 和一个 string[] 到一个 Dictionary 中，你总是可以使用基本的 for 循环：

var MyDictionary = new Dictionary<string, string>();

for (int i = 0; i < Math.Min(MyList.Count, MyArray.Length); i++)
{
    MyDictionary.Add(MyList[i], MyArray[i]);
}

它可能有点无聊，但它适用于任何一对 IEnumerable 集合。

So far I like Bala R's LINQ answer best (and he's got my upvote), but it's worth mentioning that in a general case, when you want to combine a List<string> and a string[] into a Dictionary<string, string>, you can always go with a basic for loop:

var MyDictionary = new Dictionary<string, string>();

for (int i = 0; i < Math.Min(MyList.Count, MyArray.Length); i++)
{
    MyDictionary.Add(MyList[i], MyArray[i]);
}

It might be a little boring, but it'll work for any pair of IEnumerable<T> collections.

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