//重启主程序

        //System.Diagnostics.Process.Start(System.Reflection.Assembly.GetExecutingAssembly().Location);

        #region 读存app.config字段值

        public static string GetConfigValue(string appKey)

        {

            XmlDocument xDoc = new XmlDocument();

            try

            {

                //缓存路径

                xDoc.Load(System.Windows.Forms.Application.ExecutablePath + ".config");

                System.Xml.XmlNode xNode;

                System.Xml.XmlElement xElem;

                xNode = xDoc.SelectSingleNode("//appSettings");

                xElem = (System.Xml.XmlElement)xNode.SelectSingleNode("//add[@key='" + appKey + "']");

                if (xElem != null)

                    return xElem.GetAttribute("value");

                else

                    return "";

            }

            catch

            {

                return "";

            }

        }

        public static void SetConfigValue(string AppKey, string AppValue)

        {

            XmlDocument xDoc = new XmlDocument();

            xDoc.Load(System.Windows.Forms.Application.ExecutablePath + ".config");

            XmlNode xNode;

            XmlElement xElem1;

            XmlElement xElem2;

            xNode = xDoc.SelectSingleNode("//appSettings");

            xElem1 = (XmlElement)xNode.SelectSingleNode("//add[@key='" + AppKey + "']");

            if (xElem1 != null) xElem1.SetAttribute("value", AppValue);

            else

            {

                xElem2 = xDoc.CreateElement("add");

                xElem2.SetAttribute("key", AppKey);

                xElem2.SetAttribute("value", AppValue);

                xNode.AppendChild(xElem2);

            }

            xDoc.Save(System.Windows.Forms.Application.ExecutablePath + ".config");

        }

        #endregion