Question

Im doing this:

string[,] string1 = {{"one", "0"},{"Two", "5"},{"Three","1"}};
int b = 0;

for(int i = 0; i <= string1.Length; i++)
{
     b = int.Parse(string1[i, 1]); // Error occurs here
}

Im getting an error saying that “index extent the limits of the array” (or something like that, the error is in danish).

Answer 1

There are two problems:

• string1.Length will return 6, as that’s the total length of the array
• You’re using <= for the comparison, so it would actually try to iterate 7 times.

Your for loop should be:

for (int i = 0; i < string1.GetLength(0); i++)

The call to GetLength(0) here will return 3, as the size of the “first” dimension. A call to GetLength(1) return 2, as the second dimension is of size 2. (You don’t need that though, as you’re basically hard-coding the knowledge that you want the second “column” of each “row”.)

See the docs for Array.GetLength() for more details.