How can I declare a two dimensional string array?

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

You can also instantiate it in the same line with array initializer syntax as follows:

string[,] Tablero = new string[3, 3] \{\{"a","b","c"},
{"d","e","f"},
{"g","h","i"} };

try this :

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

have a look on http://msdn.microsoft.com/en-us/library/2yd9wwz4.aspx

You probably want this:

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

This will create you a matrix-like array where all rows have the same length.

The array in your sample is a so-called jagged array, i.e. an array of arrays where the elements can be of different size. A jagged array would have to be created in a different way:

string[][] Tablero = new string[3][];
for (int i = 0; i < Tablero.GetLength(0); i++)
{
Tablero[i] = new string[3];
}

You can also use initializers to fill the array elements with data:

string[,] Tablero = new string[,]
{
{"1.1", "1.2", "1.3"},
{"2.1", "2.2", "2.3"},
{"3.1", "3.2", "3.3"}
};

And in case of a jagged array:

string[][] Tablero = new string[][]
{
new string[] {"1.1", "1.2"},
new string[] {"2.1", "2.2", "2.3", "2.4"},
new string[] {"3.1", "3.2", "3.3"}
};

I assume you're looking for this:

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

The syntax for a jagged array is:

        string[][] Tablero = new string[3][];
for (int ix = 0; ix < 3; ++ix) {
Tablero[ix] = new string[3];
}

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

When you are trying to create a multi-dimensional array all you need to do is add a comma to the declaration like so:

string[,] tablero = new string[3,3].

There are many examples on working with arrays in C# here.

I hope this helps.

Thanks, Damian

string[][] is not a two-dimensional array, it's an array of arrays (a jagged array). That's something different.

To declare a two-dimensional array, use this syntax:

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

If you really want a jagged array, you need to initialize it like this:

string[][] tablero = new string[][] { new string[3],
new string[3],
new string[3] };

You just declared a jagged array. Such kind of arrays can have different sizes for all dimensions. For example:

string[][] jaggedStrings =  {
new string[] {"x","y","z"},
new string[] {"x","y"},
new string[] {"x"}
};

In your case you need regular array. See answers above. More about jagged arrays

A 3x3 (multidimensional) array can also be initialized (you have already declared it) like this:

string[,] Tablero =  {
{ "a", "b", "c" },
{ "d", "e", "f" },
{ "g", "h", "i"}
};

There are 2 types of multidimensional arrays in C#, called Multidimensional and Jagged.

For multidimensional you can by:

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

For jagged array you have to write a bit more code:

string[][] jagged = new string[3][];
for (int i = 0; i < jagged.Length; i++)
{
jagged[i] = new string[3];
}

In short jagged array is both faster and has intuitive syntax. For more information see: this Stackoverflow question

you can also write the code below.

Array lbl_array = Array.CreateInstance(typeof(string), i, j);

where 'i' is the number of rows and 'j' is the number of columns. using the 'typeof(..)' method you can choose the type of your array i.e. int, string, double