public int num = 0;
        /// <summary>
        /// 关闭背光
        /// </summary>
        public void CloseOtherBackLight()
        {
            string path = GFun.GetDataDir() + "CloseOtherBackLight.xml";
            bool isok = true;
            if (File.Exists(path))
                isok = true;
            else
                isok = false;
            if (num == 0)
            {
                isok = false;
            }

            if (isok == false)
            {
                FHost.CloseBackLight(0xFF, false);
                XmlDocument CloseBackLight = new XmlDocument();
                XmlNode node = CloseBackLight.CreateElement("CloseOtherBackLight");
                CloseBackLight.AppendChild(node);
                List<int> other = new List<int>();
                string cmdStr = "Select EtnCode from Patient";
                using (SqlCeCommand cmd = new SqlCeCommand(cmdStr, DbOprt.Conn))
                {
                    using (SqlCeDataReader dr = cmd.ExecuteReader())
                    {
                        string txt = string.Empty;
                        while (dr.Read())
                        {
                            string BedNo = Convert.ToString(dr["EtnCode"]);
                            try
                            {
                                other.Add(Convert.ToInt16(BedNo));
                            }
                            catch (System.Exception ex)
                            {
                                Excp.WriteExcp(ex);
                            }
                        }
                    }
                }
                for (int i = 0; i < other.Count; i++)
                {
                    XmlNode bedno = CloseBackLight.CreateNode(XmlNodeType.Element, "BedNo", null);
                    bedno.InnerText = other[i].ToString();
                    node.AppendChild(bedno);
                }
                CloseBackLight.Save(path);

                foreach (int item in other)
                {
                    FHost.OpenBackLight((short)item);
                }
            }
            else
            {
                XmlDocument BedNo = new XmlDocument();
                BedNo.Load(path);
                XmlNode root = BedNo.DocumentElement;
                List<int> XMLBedNo = new List<int>();
                foreach (XmlNode xmlNode in root.ChildNodes)
                {
                    XMLBedNo.Add(Convert.ToInt16(xmlNode.InnerText));
                }

                List<int> SQLBedNo = new List<int>();
                string cmdStr = "Select EtnCode from Patient";
                using (SqlCeCommand cmd = new SqlCeCommand(cmdStr, DbOprt.Conn))
                {
                    using (SqlCeDataReader dr = cmd.ExecuteReader())
                    {
                        string txt = string.Empty;
                        while (dr.Read())
                        {
                            string BedID = Convert.ToString(dr["EtnCode"]);
                            try
                            {
                                SQLBedNo.Add(Convert.ToInt16(BedID));
                            }
                            catch (System.Exception ex)
                            {
                                Excp.WriteExcp(ex);
                            }
                        }
                    }
                }
                List<int> Open = new List<int>();
                List<int> Close = new List<int>();
                for (int i = 0; i < XMLBedNo.Count; i++)
                {
                    if (!SQLBedNo.Contains(XMLBedNo[i]))
                    {
                        Close.Add(XMLBedNo[i]);
                    }
                }
                for (int i = 0; i < SQLBedNo.Count; i++)
                {
                    if (!XMLBedNo.Contains(SQLBedNo[i]))
                    {
                        Open.Add(SQLBedNo[i]);
                    }
                }
                foreach (var item in Open)
                {
                    FHost.OpenBackLight((short)item);
                }
                foreach (var item in Close)
                {
                    FHost.CloseBackLight((short)item, false);
                }
                File.Delete(path);
                XmlDocument CloseBackLight = new XmlDocument();
                XmlNode node = CloseBackLight.CreateElement("CloseOtherBackLight");
                CloseBackLight.AppendChild(node);
                for (int i = 0; i < SQLBedNo.Count; i++)
                {
                    XmlNode bedno = CloseBackLight.CreateNode(XmlNodeType.Element, "BedNo", null);
                    bedno.InnerText = SQLBedNo[i].ToString();
                    node.AppendChild(bedno);
                }
                CloseBackLight.Save(path);
            }
            num++;
        }