C # configuration File App. Config Operation class Library

 Public classConfigoperator {#regionGet value from configuration file/// <summary>        ///get value from configuration file/// </summary>        /// <param name= "key" >the key string in the configuration file</param>        /// <returns></returns>         Public Static stringGetvaluefromconfig (stringkey) {            Try{Configuration config=configurationmanager.openexeconfiguration (Configurationuserlevel.none); //get the appsettings nodeAppsettingssection appsection = (appsettingssection) config. GetSection ("appSettings"); returnappsection. Settings[key].            Value; }            Catch            {                return ""; }        }        #endregion        #regionSetting up the configuration file/// <summary>        ///setting up the configuration file/// </summary>        /// <param name= "key" >the key string in the configuration file</param>        /// <param name= "value" >the value string in the configuration file</param>        /// <returns></returns>         Public Static BOOLSetvaluefromconfig (stringKeystringvalue) {            Try            {                //Open configuration fileConfiguration config =configurationmanager.openexeconfiguration (Configurationuserlevel.none); //get the appsettings nodeAppsettingssection appsection = (appsettingssection) config. GetSection ("appSettings"); Appsection. Settings[key]. Value=value; Config.                Save (); return true; }            Catch            {                return false; }        }        #endregion

C # configuration File App. Config Operation class Library