List with multiple values per key

Question

how do we create a list with multiple values for example , list[0] contains three values {"12","String","someValue"} the Some value is associated to the two other values i want to use a list rather than using an array

string[, ,] read = new string[3, 3, 3];

Answer 1

Why not have a List of Tuple's? It can be unclear, but it will do what you are after:

var list = new List<Tuple<string, string, string>>();
list.Add(new Tuple<string, string, string>("12", "something", "something"));

Although it would probably be better to give these values semantic meaning. Perhaps if you let us know what the values are intending to show, then we can give some ideas on how to make it much more readable.

Answer 2

Use list of lists:

List<List<string>> read;

Or if you want key-multiple values relation, use dictionary of lists:

Dictionary<string, List<string>> read;