分割字符串并将其分配给字典

Question

I have a text file containing many lines which look like this:

Flowers{Tulip|Sun Flower|Rose}

Gender{Female|Male}

Pets{Cat|Dog|Rabbit}

I know how to read lines from a file, but what's the best way to split and store the categories and their subitems in a dictionary afterwards? Let's say from a string array which contains all the above lines?

Answer 1

The idea to use a regexp is right, but I prefer using named captures for readability

var regexp = new Regex(@"(?<category>\w+?)\{(?<entities>.*?)\}");
var d = new Dictionary<string, List<string>>();

// you would replace this list with the lines read from the file
var list = new string[] {"Flowers{Tulip|Sun Flower|Rose}"
                         , " Gender{Female|Male}"
                         , "Pets{Cat|Dog|Rabbit}"};

foreach (var entry in list)
{
    var mc = regexp.Matches(entry);
    foreach (Match m in mc)
    {
        d.Add(m.Groups["category"].Value
            , m.Groups["entities"].Value.Split('|').ToList());
    }
}

You get a dictionary with the category as a key, and the values in a list of strings

Answer 2

you can use the Key and value on this code

string T = @"Flowers{Tulip|Sun Flower|Rose}

Gender{Female|Male}

Pets{Cat|Dog|Rabbit}";

foreach (var line in T.Split('\n'))//or while(!file.EndOfFile)
{
    var S = line.Split(new char[] { '{', '|','}' }, StringSplitOptions.RemoveEmptyEntries);
    string Key = S[0];
    MessageBox.Show(Key);//sth like this
    for (int i = 1 ; i < S.Length; i++)
    {
        string value = S[i];
        MessageBox.Show(value);//sth like this
    }
}

Answer 3

you can use this:

string line = reader.ReadLine();
Regex r = new Regex(@"(\w+){(\w+)}");

now loop the results of this regex:

foreach(Match m in r.Matches(line)) {
    yourDict.Add(m.Groups[1], m.Groups[2].Split(' '));
}