How to create an array from int and string into an array?

Question

Command line

Tell me how to create an array from int and string, which allows you to operate with int values ​​as keys and strings as values?
Everywhere an example with one of the values ​​is described, for example:
var array = mass[] { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };
And here an array is pre-created, and I need to create a void Add(int key, string value) method and add variables to it.
Or tell me, please, what can I read about this?

Answer 1

Dictionary<int,string>