AppSettings操作類

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/// <summary>    /// Config檔案操作    /// </summary>    public class Config    {        /// <summary>        /// 根據Key取Value值        /// </summary>        /// <param name="key"></param>        public static string GetValue(string key)        {            return ConfigurationManager.AppSettings[key].ToString().Trim();        }        /// <summary>        /// 根據Key修改Value        /// </summary>        /// <param name="key">要修改的Key</param>        /// <param name="value">要修改為的值</param>        public static void SetValue(string key, string value)        {            System.Xml.XmlDocument xDoc = new System.Xml.XmlDocument();            xDoc.Load(HttpContext.Current.Server.MapPath("~/XmlConfig/system.config"));            System.Xml.XmlNode xNode;            System.Xml.XmlElement xElem1;            System.Xml.XmlElement xElem2;            xNode = xDoc.SelectSingleNode("//appSettings");            xElem1 = (System.Xml.XmlElement)xNode.SelectSingleNode("//add[@key=‘" + key + "‘]");            if (xElem1 != null) xElem1.SetAttribute("value", value);            else            {                xElem2 = xDoc.CreateElement("add");                xElem2.SetAttribute("key", key);                xElem2.SetAttribute("value", value);                xNode.AppendChild(xElem2);            }            xDoc.Save(HttpContext.Current.Server.MapPath("~/XmlConfig/system.config"));        }    }

　　

AppSettings操作類