Question

this must be answered some time in the past, however I could not a particular way that I was looking for.
I want to make an array dimension of 7 x 2;

ex)

{0,0} {0,0}
{0,0}
...
...
..
.


int [,] myArray = new int[7,2];

Then I tried to treat each dimension of an array like one dimensional array.
So I tried to assign values to the array this way…


int[0] = new int{ 1, 2};

I think it should then look like…

{1 , 2}
{0 , 0}
...
..
.

but i get an error.

I believe it is due to my incomplete understanding of an array class.

Answer 1

What you want is a jagged array, not a multidimentional array. Essentially, an array of arrays:

int[][] myArray = new int[7][];
int[0] = new int {1, 2};

The second “dimension” arrays are not bounded to a length of 2 however- you need to enforce that manually. This is why they are called jagged- visually, they can be of varying lengths:

{
  { 3, 2 },
  { 1, 8, 3 },
  { 9, 6, 3, 4 },
  { 4, 2, 8 },
  { 4, 9, 3, 4, 5 },
  { 2, 2 }
}

All about arrays in C# here: http://msdn.microsoft.com/en-us/library/aa288453(v=vs.71).aspx