private void PanelExpanding(object sender, EventArgs e)
        {
            int maxHeight = (int)(this.Height * 0.2);

            EditContactPanel.Height = Math.Min(maxHeight, EditContactPanel.Height + 10);

            if (EditContactPanel.Height == maxHeight)
            {
                EditPanelTimer.Tick -= this.PanelExpanding;
                EditPanelTimer.Stop();
                EditPanelOff = !EditPanelOff;
            }
        }
 private void StartExpand()
 {
     EditPanelTimer.Tick += this.PanelExpanding;
     EditPanelTimer.Start();
 }