int[,] x = new int[5, 6];
x[0, 0] =
1;
x[0, 1] =
2;
x[0, 2] =
3;
x[0, 3] =
4;
x[0, 4] =
5;
x[0, 5] =
6;
x[1, 0] =
7;
x[1, 1] =
8;
x[1, 2] =
9;
x[1, 3] =
10;
x[1, 4] =
11;
x[1, 5] =
12;
x[2, 0] =
13;
x[2, 1] =
14;
x[2, 2] =
15;
x[2, 3] =
16;
x[2, 4] =
17;
x[2, 5] =
18;
x[3, 0] =
19;
x[3, 1] =
20;
x[3, 2] =
21;
x[3, 3] =
22;
x[3, 4] =
23;
x[3, 5] =
24;
x[4, 0] =
25;
x[4, 1] =
26;
x[4, 2] =
27;
x[4, 3] =
28;
x[4, 4] =
29;
x[4, 5] =
30;

veya

int[,] x = { { 1, 2, 3, 4, 5, 6 }, { 7, 8, 9, 10, 11, 12 }, { 13, 14, 15, 16, 17, 18 }, { 19, 20, 21, 22, 23, 24 }, { 25, 26, 27, 28, 29, 30 } };