## 文件路徑 ``` ConfigHelper.cs ``` ## 1、得到web.config AppSetting 下key值 ``` /// <summary> /// 得到web.config AppSetting 下key值 <appSettings><add key="useEncrypt" value="false"/></appSettings> /// </summary> /// <param name="key">關鍵字</param> /// <returns>返回值</returns> public static string GetValue(string key) { try { return ConfigurationManager.AppSettings[key]; } catch (Exception ex) { throw new System.Exception(ex.Message); } } ``` ## 用法 ``` var useValidateCode = ConfigHelper.GetValue("showValidateCode"); ``` ## 2、設置web.config AppSetting 下key值 ``` /// <summary> /// 設置應用程序配置節點，如果已經存在此節點，則會修改該節點的值，否則添加此節點 /// </summary> /// <param name="key">節點名稱</param> /// <param name="value">節點值</param> public static void SetAppSetting(string key, string value) { Configuration config = WebConfigurationManager.OpenWebConfiguration("~"); AppSettingsSection app = config.AppSettings; app.Settings[key].Value =value; config.Save(ConfigurationSaveMode.Modified); } ``` ## 用法 ``` ConfigHelper.SetAppSetting("website", "http://www.ynicp1.com");//注意節點website需要手動添加 因為安全的原因自動添加節點會報錯 ``` ## 效果 ``` <appSettings> <add key="dbname" value="bpm" /> <add key="host" value="" /> <add key="useEncrypt" value="false" /> <add key="systemName" value="精準扶貧" /> <add key="copyRight" value="精準扶貧" /> <add key="website" value="http://www.ynicp1.com" /> <add key="showValidateCode" value="false" /> <add key="CombresSectionName" value="combres" /> </appSettings> ```