如何可以复制文件在C＃中字典 [英] how can copy file to dictionary in c#

问题描述

如何可以复制文件在C＃字典

how can copy file to dictionary in c#

推荐答案

好了，你有没有指定的文件格式。如果它的核心价值，那么你可以这样做：

Well, you haven't specified the file format. If it's "key value", then you could do something like:

string[] lines = File.ReadAllLines("file.txt");
var dictionary = lines.Select(line => line.Split(' '))
                      .ToDictionary(bits => bits[0],
                                    bits => bits[1]);

其实我不喜欢在一个时间阅读完所有的线，你要知道 - 它是罚款，如果文件虽小，但如果它的大不是很好。这是相当简单写一个方法来一次读取一行：

I don't actually like reading all the lines in at a time, mind you - it's fine if the file is small, but not nice if it's large. It's reasonably straightforward to write a method to read one line at a time:

public static IEnumerable<string> EnumerableLines(string file)
{
    using (TextReader reader = File.OpenText(file))
    {
        string line;
        while ((line = reader.ReadLine()) != null)
        {
            yield return line;
        }
    }
}

您可以调整该文本。编码等

You can adjust this for text encodings etc.

现在查询变为：

var dictionary = EnumerableLines("file.txt")
                      .Select(line => line.Split(' '))
                      .ToDictionary(bits => bits[0],
                                    bits => bits[1]);

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