Nested Lists ( ‘Jagged List’ )

Just like Jagged Arrays ( ? ) , it is legal to imagine some sort of ‘Jagged List’, or Nested List, which quite similarly lets us come up with multi-dimensional List datastructure hierarchies.

The code below would actually print each integer in new line :

const string csv =
@"1,2,3,4,5
6,7,8,9,10
11,12,13,14,15
16,17,18,19,20";
var data = new List<List<int>>();

foreach (var line in csv.Split('\n'))
{
	var innerList = new List<int>();
	foreach (var item in line.Split(','))
	{
		innerList.Add(int.Parse(item));
	}
	data.Add(innerList);
}

foreach (var item in data)
{
	foreach (var inner_item in item)
	{
		Console.WriteLine(inner_item);
	}
}