Foreach loop, determine which is the last iteration of the loop

Question

I have a foreach loop and need to execute some logic when the last item is chosen from the List, e.g.:

 foreach (Item result in Mod         


        

Answer 1

To do something additional to each element except for the last one, function based approach can be used.

delegate void DInner ();

....
    Dinner inner=delegate 
    { 
        inner=delegate 
        { 
            // do something additional
        } 
    }
    foreach (DataGridViewRow dgr in product_list.Rows)
    {
        inner()
        //do something
    }
}

This approach has apparent drawbacks: less code clarity for more complex cases. Calling delegates might be not very effective. Troubleshooting might be not quite easy. The bright side - coding is fun!

Having said that, I would suggest using plain for loops in trivial cases, if you know that your collection's count is not terribly slow.