Using the foreach loop construct in C#

Question

static void Main(string[] args)
{
int[ , ] someNums = { {2, 3}, {5, 6}, {4, 6} };

int outerRow = 1;
foreach (var outer in someNums) {
Console.WriteLine("outer row: {0}\n\n", outerRow);
***this line fails--> foreach (var inner in outer) {
Console.WriteLine(" inner value: {0}", inner);
}//foreach inner
outerRow += 1;
}//foreach outer
}//Main

C# compiler complains that a variable of type int doesn't have a publicly defined GetEnumerator() method, or something like that.

To me, the outer foreach loop returns a reference to each of the subarrays in someNums. Then the inner foreach loop is supposed to iterate through the elements of the subarray and print them to the Console.

Obviously, I have missed something fundamental. Can anyone help me correct my code?

Thank you!

EDIT: Oops! I blocked out the inner foreach loop and ran the program. Seems that the outer foreach actually enumerates all of the elements in all of the subarrays. It doesn't enumerate a whole subarray at a time.

So I guess my question now is, how do I iterate through someNums so that I get a reference to each one of the subarrays, not the individual constituent array elements? Is this even possible?

Thank you!

Answer 1

You either have to use jagged arrays to use a for loop as far as I can tell.

https://code.sololearn.com/cx7eQvh0m7O6/?ref=app