List of Tuples to multi-dimensional array

Question

Related, but not Duplicate (it's a completely different language, PHP not C#):
How to create multi-dimensional array from a list?

How would I go about converting a list of 'Tuple's to string[,]?

This is part of a web crawler, but i'm messing with conversions of lists and arrays just out of curiosity. Here's the method.

private string[,] getimages(string url)
    {
        List<Tuple<string, string>> images = new List<Tuple<string, string>>();
        string raw = client.DownloadString(url);
        while (raw.Contains("<a class=\"title \" href"))
        {
            raw = raw.Substring(raw.IndexOf("<a class=\"title \" href"));
            String link = raw.Substring(24, raw.IndexOf(">", 24) - 26);

            int startname = raw.IndexOf(">", 24) + 1;
            int endname = raw.IndexOf("</a>&#32;");
            String name = raw.Substring(startname, endname - startname);

            images.Add(new Tuple<string, string>(name, link));

            raw = raw.Substring(endname);
        }



}

I want to return 'images', but converted to a multidimensional array.

Can you give an example of what the Tuple looks like? I'm assuming Tuple<string, string>? — Simon Whitehead
– Simon Whitehead, Commented Dec 21, 2012 at 1:09
Can you give an example of input and output? What have you tried? — SWeko
– SWeko, Commented Dec 21, 2012 at 1:10
A string[,] is a 2-dimensional array of strings, not just two parallel string arrays. What are you expecting the string[,] to contain? Are you expecting/intending one of the dimensions to only be of size 2? Also, most C# developers will see a Tuple<string,string> and understand that as a "pair of strings"... using a string[,] does not connote the same meaning. — JaredReisinger
– JaredReisinger, Commented Dec 21, 2012 at 1:21
It's not to late to use a proper html parser. Your code looks like it might break any second. HtmlAgilityPack is pretty nifty for this sort of thing. — spender
– spender, Commented Dec 21, 2012 at 1:22

SWeko · Accepted Answer · 2012-12-21 01:16:38Z

3

A simple and straight-forward way is to just for the list:

string[,] result = new string[images.Count, 2];

for(int i=0; i<images.Count; i++)
{
  var tuple = images[i];
  result[i,0] = tuple.Item1;
  result[i,1] = tuple.Item2;
 }
 return result;

answered Dec 21, 2012 at 1:16

SWeko

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