How do i wait the control_progressbar to finish for every item in the loop

        private void button2_Click(object sender, EventArgs e)
        {
//I have a List(List_movieLinks) containing 900 strings.
            for (int i = 0; i < List_movieLinks.Capacity; i++)
            {
//I have a custom control(controlFile1) with a progressBar inside.
                if (controlFile1.ready)
                {
//until the progressBar value = 100 (until is full)
// 5 seconds are passing
// but the for loop is not stopping for those 5 seconds.

// how do I wait the progressBar to finish for every item in the loop? 

                }
            }
         }
//thank you

yes, it's a progress bar problem after all.
:)
problem solved
I was thinking at the timer element in the same time, but when I narrowed it down to bits, all became clear.
Thank you, all.