How can I make a collection of 2 dimensional arrays?

Question

I need to create some 2 dimensional arrays. How can I store them? I don`t know how many of them so the collection must be done dynamicaly. The second qestion is how can I display every array at once in ie List box data grid or somerwhere else? thx

manoj.samuel · Answer

please check out ArrayList Class Hope this might be of Help Thanks Manoj

ytram5 · Answer

for and foreach make very little difference and if anything foreach is the slower construct. http://blogs.msdn.com/kevin_ransom/archive/2004/04/19/116072.aspx

mibuyt · Answer

Hi If you do not know the exact amount of item within arraylist you should use foreach loop. I think for loop is more suitable and faster if you know the exact items within that arraylist. Correct me if i am wrong. Cheers.

Stan Gershengoren · Answer

well you can either create a class that has a 2-dim array and store those classes in an ArrayList or you can just store an Array in ArrayList for example int[][] a = new int[5][5]; ArrayList ar = new ArrayList(); ar.Add (a); and then to display you would need to loop throw the ArrayList and then loop through the arrays for (int i=0; i<ar.Count; i++) { int[][] tmpA = (int[][]) ar[i]; for (int r=0;r<5;r++) for (int c=0;c<5;c++) { do something with tmpA[r][c]; } }