冠霖的部落格

//App.config 內容

＜?xml version="1.0" encoding="utf-8" ?＞
＜configuration＞
  ＜appSettings＞
    ＜add   key="db_conn_ip"   value="127.0.0.1"   /＞
    ＜add   key="db_conn_id"   value="sa"   /＞
    ＜add   key="db_conn_pw"   value="123"   /＞
  ＜/appSettings＞
＜/configuration＞   

      /// <summary>
        /// GetAppValue
        /// </summary>
        /// <param name="key">key name</param>
        /// <returns></returns>
        private string GetAppValue(string key)
        {
            string rc = string.Empty;
            try
            {
                rc = ConfigurationSettings.AppSettings.GetValues(key)[0].ToString();
            }
            catch (Exception ex)
            {
                throw;
            }

            return rc;
        }

        /// <summary>
        /// SAVE APP VALUE
        /// </summary>
        /// <param name="AppKey"></param>
        /// <param name="AppValue"></param>
        private void SetAppValue(string AppKey, string AppValue)
        {

            XmlDocument doc = new XmlDocument();
            doc.Load(Application.ExecutablePath + ".config");
            XmlNode node = doc.SelectSingleNode(@"//add[@key='" + AppKey + "']");
            XmlElement ele = (XmlElement)node;
            ele.SetAttribute("value", AppValue);
            doc.Save(Application.ExecutablePath + ".config");

        }