设定容器内控件是否可用

using System.ComponentModel;

        /// <summary>
        /// 例外
        /// </summary>
        public const string CS_EXCLUDE = "EXCLUDE";

#region SetContainerControlEnabled
        /// <summary>
        /// 设定容器内控件是否可用
        /// </summary>
        /// <param name="parentCtrl">容器控件</param>
        /// <param name="enabled">是否可用</param>
        public static void SetContainerControlEnabled(Control parentCtrl, bool enabled)
        {
            foreach (Control ctrl in parentCtrl.Controls)
            {
                if (ctrl.GetType().FullName == "System.Windows.Forms.Label") continue;
                if (ctrl.Tag != null && ctrl.Tag.ToString() == CS_EXCLUDE) continue;
                PropertyDescriptorCollection pdc = TypeDescriptor.GetProperties(ctrl);
                PropertyDescriptor pdReadOnly = pdc.Find("ReadOnly", false);
                PropertyDescriptor pdEnabled = pdc.Find("Enabled", false);
                if (pdReadOnly != null)
                {
                    pdReadOnly.SetValue(ctrl, !enabled);
                    if (pdEnabled != null)
                    {
                        pdEnabled.SetValue(ctrl, true);
                    }
                }
                else
                {
                    if (pdEnabled != null)
                    {
                        pdEnabled.SetValue(ctrl, enabled);
                    }
                }
            }
        }
        #endregion