C# 窗体管理

 /// <summary>
        /// 打开窗体数组
        /// </summary>
        private static ArrayList FormOpenList = new ArrayList();
        /// <summary>
        /// 打开窗口
        /// </summary>
        /// <param name="f"></param>
        public static void OpenFormList(System.Windows.Forms.Form f)
        {
            try
            {
                //检测是否已经打开(不重复打开)
                foreach (System.Windows.Forms.Form childForm in FormOpenList)
                {
                    if (childForm.Name == f.Name)//Name比较稳定
                    {
                        f.Close();
                        f.Dispose();
                        childForm.Activate();//如果已经打开,则激活为具有焦点窗口
                        return;
                    }
                }
                FormOpenList.Add(f);
                f.FormClosed += new System.Windows.Forms.FormClosedEventHandler(CloseFormList);
                f.Show();
            }
            catch (Exception ex)
            {
                f.Dispose();//释放资源
                MessageBoxEty.Show(ex);
            }

        }
        /// <summary>
        /// 关闭时,请调用
        /// </summary>
        /// <param name="f"></param>
        public static void CloseFormList(object sender, System.Windows.Forms.FormClosedEventArgs e)
        {
            FormOpenList.Remove(sender);
        }

        public static void ShowFormList()
        {
            foreach (System.Windows.Forms.Form item in FormOpenList)
            {
                item.Show();
            }
        }
        /// <summary>
        /// 隐藏窗口
        /// </summary>
        public static void HideFormList()
        {
            foreach (System.Windows.Forms.Form item in FormOpenList)
            {
                item.Hide();
            }
        }
        /// <summary>
        /// 清空窗体数组列表
        /// </summary>
        public static void ClearFormList()
        {
            FormOpenList.Clear();
            FormOpenList = new ArrayList();
        }