C＃ - 2D数组字符串数组

Question

I am trying to create a world map for a console-based game.

In the World class I have string arrays that can be printed using a level print method.

public static string[] A1 = new string[]
{
    (" level data"),
    (" level data"),
};

This works if I do

Render.DrawLevel(World.A1);

where Render.DrawLevel takes args:

(string[] _level)

However, in the World Class, I want to create a two-dimensional array that can hold all of the Map's string arrays.

I have tried:

public static string[,][] Map = new string[,][]
{
    { A1 , A2 },
    { B1 , B2 },
};

But if I try to use:

World.Map[0,0]

as my arguments for level printed, I get given an error that this is NULL , instead of the string[] A1.

How can I create a 2d array of arrays, and refer to it properly for string[] arguments?

Thank you very much,

Fin.

EDIT: Incorrectly copied code as 'static void' not just 'static'.

Answer 1

Place the Map initialization after the initialization of the arrays. A1, A2, B1, B2 are equal to null during the initialization of Map .

The syntax is perfectly fine.

This works as intended:

    public static string[] A1 = new string[]
        {
            (" level data 1"),
            (" level data 2"),
        };

    public static string[] A2 = new string[]
        {
            (" level data 1"),
            (" level data 2"),
        };

    public static string[] B1 = new string[]
        {
            (" level data 1"),
            (" level data 2"),
        };

    public static string[] B2 = new string[]
        {
            (" level data 1"),
            (" level data 2"),
        };

    public static string[,][] Map = new string[,][]
    {
        { A1, A2 },
        { B1, B2 },
    };

Answer 2

A two dimensional array is essentially an array of equally sized arrays. You can visualize it as a matrix, with each column (or row, doesn't really matter) as a separate array. So then the elements in the first row (column) would be the first elements of each of the arrays. What you are doing is trying to create a two dimensional array of arrays.

The best answer on this is a great read concerning your question.

Answer 3

Your signature for Map is incorrect, it can't be void and a multi-dimensional string array. Change it to:

    public static string[,][] Map = new string[,][]
        {
            {A1,A2 },
            {B1,B2 },
        };