获取 asp.net 控件的所有子控件

joerong666

       获取 asp.net 控件的所有子控件
     先定义全局变量:ArrayList al = new ArrayList();
     以下使用递归的方式将所有ctrl的所有子控件存进al中
       /// <summary>
        /// 获取控件的所有子控件（递归方式）
        /// </summary>
        /// <param name="ctrl">所针对的主控件</param>
        /// <param name="cotrlTye">控件的Type型，如typeof(Label)、typeof(TextBox)</param>
        /// <returns>返回控件集合</returns>
        public static ArrayList GetAllControls(Control ctrl, Type cotrlTye)
        {
            ArrayList al = new ArrayList();
            ComputeSubControls(ctrl,cotrlTye,ref al);
            return al;
        }
        /// <summary>
        /// 计算控件的所有子控件（递归方式）
        /// </summary>
        /// <param name="ctrl">所针对的主控件</param>
        /// <param name="cotrlTye">控件的Type型，如typeof(Label)、typeof(TextBox)</param>
        /// <param name="al">用于存储控件集的容器</param>
        private static void ComputeSubControls(Control ctrl, Type cotrlTye,ref ArrayList al)
        {
            if (ctrl == null)
                return;
            foreach (Control c in ctrl.Controls)
            {
                if (c.GetType() == cotrlTye)
                {
                    al.Add(c);
                }
                else if (c.HasControls())
                {
                    ComputeSubControls(c, cotrlTye,ref al);
                }
            }
        }