C# Array List of ArrayList

Question

I have an arraylist of string objects, that then gets added into and arraylist of arraylists.

As a java developer I used to use Vectors, I know now defunct but the name sounds great haha!!, I also used ArrayList which both had access to the sub arraylist by means of, for example

ArrayList<String> array1 = new ArrayList<String>();
array.add("test");

ArrayList<ArrayList> array2 = new ArrayList<ArrayList>()
array2.add(array1);

string var = array2.get(1).get(2);

What is this equivilent in C#?

Did you even do an attempt to search for the answer? List ... — Steven Jeuris
– Steven Jeuris, Commented Apr 14, 2011 at 14:02

Justin Niessner · Accepted Answer · 2011-04-14 14:01:42Z

7

var array1 = new List<string>();
array1.Add("test");

var array2 = new List<List<string>>();
array2.Add(array1);

var originalString = array2[0][0]; // or array2[1][2] if there's an item there

answered Apr 14, 2011 at 14:01

Justin Niessner

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trickdev · Accepted Answer · 2011-04-14 14:02:06Z

4

You want to use the List<T> generic class:

List<string> array1 = new List<string>();
array1.Add("test");

List<List<string>> array2 = new List<List<string>>();
array2.Add(array1);

string myStr = array2[0][0]; //Whatever indexers you want here

answered Apr 14, 2011 at 14:02

trickdev

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