C＃-将字符串转换为二维字符串数组

Question

I can't seem to figure this out.

I want to convert this:

string foobarString = "[['Foo', 'bar'], ['Foo', 'bar'], ['Foo', 'bar']]";

To a two dimensional array (or list) so it looks like this:

fooBarArray[0] = Array['Foo', "bar"];
fooBarArray[1] = Array['Foo', "bar"];
fooBarArray[2] = Array['Foo', "bar"];
... etc.

I have tried spliting by ("],") and then cleaning the string and creating an array afterwards. But it's just to damn UGLY!

I want a cleaner version. Is there no method built in for such a method in C#?

// Thanks

Answer 1

Since your question is not giving us enough information I will assume that you are trying to convert some JSON into an array of strings. As far as I know there is no build in method in C# for this. You could use an extension for this. Newtonsoft JSON

After installing this package you will be able to use the following code:

string foobarString = "[['Foo', 'bar'], ['Foo', 'bar'], ['Foo', 'bar']]";
var result = Newtonsoft.Json.JsonConvert.DeserializeObject<string[][]>(foobarString);

Answer 2

First, split it by "[[", "], [", "]]"

var array1 = foobarString.Split(new string[] {"[[", "], [", "]]"}, StringSplitOptions.RemoveEmptyEntries);

array1 will contain "'Foo', 'bar'" , "'Foo', 'bar'" , "'Foo', 'bar'" Then you can split every element by ','

var fooBarArray = array1.Select(x => x.Split(',').ToArray()).ToArray()

You can do it in one line

var fooBarArray = foobarString.Split(new string[] { "[[", "], [", "]]" }, StringSplitOptions.RemoveEmptyEntries)
                .Select(x => x.Split(',').ToArray()).ToArray()

Answer 3

You could use Regex to get the array elements from your source string and then convert the matches into your arrays. Something like this should do the trick:

  var input = "[['Foo', 'bar'], ['Foo', 'bar'], ['Foo', 'bar']]";

  // search for [' more than one word character, put them into group a ', 
  //   more than one whitespace ' more than one word character, put them into group b ']
  var arrayMatches = Regex.Matches(input, @"\['(?<a>[\w]+)',\s+'(?<b>[\w]+)'\]");

  var arrays = new List<string[]>();
  foreach (Match arrayMatch in arrayMatches)
  {
    // if the match was unsuccessful, take the next match
    if(!arrayMatch.Success)
      continue;

    // create a new string array with element in group a as first element and the element in groub b as the second one
    var array = new [] {arrayMatch.Groups["a"].Value, arrayMatch.Groups["b"].Value};
    arrays.Add(array);
  }

  // convert list to array
  return arrays.ToArray();

Answer 4

There you can find some examples. The String.Split function returns an array so you can do

string[] lines = foobarString.Split(new char[]{']'}, StringSplitOptions.RemoveEmtpyEntries);
fooBarArray[0] = lines[i].Split(new char[]{'[',']', ','}, StringSplitOptions.RemoveEmtpyEntries);

Take a look at this thread: multidimensional-array-vs

Answer 5

{
    const string oldString = "[['Foo', 'bar'], ['Foo', 'bar'], ['Foo', 'bar']]";
    var list = Newtonsoft.Json.JsonConvert.DeserializeObject<List<List<string>>>(oldString);
}