Wait one second in running program

Question

dataGridView1.Rows[x1].Cells[y1].Style.BackColor = System.Drawing.Color.Red;
System.Threading.Thread.Sleep(1000);

İ want to wait one second before

Answer 1

Busy waiting won't be a severe drawback if it is short. In my case there was the need to give visual feedback to the user by flashing a control (it is a chart control that can be copied to clipboard, which changes its background for some milliseconds). It works fine this way:

using System.Threading;
...
Clipboard.SetImage(bm);   // some code
distribution_chart.BackColor = Color.Gray;
Application.DoEvents();   // ensure repaint, may be not needed
Thread.Sleep(50);
distribution_chart.BackColor = Color.OldLace;
....