Foreach listing Elements from list how chose a element before and after

Question

If we foreach a object elements in loop, I want to add or delete before, or after some elements. How I can I do at the loop foreach. Please help.

Answer 1

Use for loop instead of foreach and use index to access the Items like:

for (int index=0; index < ItemsCollection.Count; index++)
{
    SPListItem item = ItemsCollection[index];
    item.Delete();
}

because if you delete an item from ForEach it will give an exception, since the collection is changed now!