Question

How would one go about converting a list of integers to a two-dimensional array?

List<int> integerList = new List<int>();
integerList.Add(1);
integerList.Add(2);
...
integerList.Add(250000);
int[,] integerArray = new int[500,500];

//fill integerArray with integerList values here

Target output should be in rows, filling x from 0-499 then incrementing y by 1 and repeat.
integerArray[x,y]

Answer 1

Try this:

int i = 0;
foreach(var number in integerList)
{
    integerArray[i % 500, (int)(i / 500)] = number;
    i++;
}

If you want to the number to increment through the column first, just transpose the mod and div operations inside the array.