public static class Extensions // 리스트뷰 깜박임 제거
    {
        public static void DoubleBuffered(this Control control, bool enabled)

        {
            var prop = control.GetType().GetProperty("DoubleBuffered", BindingFlags.Instance | BindingFlags.NonPublic);
            prop.SetValue(control, enabled, null);
        }
    }
	
	프로젝트 클래스에 추가
	
	protected virtual bool DoubleBuffered { get; set; }
	
	private void ClientFileTransfer_Load(object sender, EventArgs e)
        {
            listview.DoubleBuffered(true);
        }