修改和擷取web.config或app.config檔案appSettings配置節中的Add裡的value屬性 函數

標籤：style   class   code   ext   color   width   

   1:  /// <summary>

   2:  /// 修改web.config或app.config檔案appSettings配置節中的Add裡的value屬性

   3:  /// </summary>

   4:  /// <remarks>

   5:  /// 注意，調用該函數後，會使整個Web Application重啟，導致當前所有的會話丟失

   6:  /// </remarks>

   7:  /// <param name="key">要修改的鍵key</param>

   8:  /// <param name="strValue">修改後的value</param>

   9:  /// <exception cref="">找不到相關的鍵</exception>

  10:  /// <exception cref="">許可權不夠，無法儲存到web.config檔案中</exception>

  11:  public static void ModifyAppSettings(string key, string strValue)

  12:  {

  13:      string XPath = "/configuration/appSettings/add[@key=‘?‘]";

  14:      XmlDocument domConfig = new XmlDocument();

  15:   

  16:      domConfig.Load(Environment.CurrentDirectory + "/Application1.exe.config");

  17:      XmlNode addKey = domConfig.SelectSingleNode((XPath.Replace("?", key)));

  18:      if (addKey == null)

  19:      {

  20:          throw new ArgumentException("沒有找到<add key=‘" + key + "‘ value=.../>的配置節");

  21:      }

  22:      addKey.Attributes["value"].InnerText = strValue;

  23:      domConfig.Save(Environment.CurrentDirectory + "/Application1.exe.config");

  24:   

  25:  }

  26:   

  27:  /// <summary>

  28:  /// 擷取web.config或app.config檔案appSettings配置節中的Add裡的value屬性

  29:  /// </summary>

  30:  /// <param name="key">要修改的鍵key</param>

  31:  /// <param name="strValue">修改後的value</param>

  32:  /// <exception cref="">找不到相關的鍵</exception>

  33:  /// <exception cref="">許可權不夠，無法儲存到web.config檔案中</exception>

  34:  public static string GetAppSettings(string key)

  35:  {

  36:      string XPath = "/configuration/appSettings/add[@key=‘?‘]";

  37:      XmlDocument domConfig = new XmlDocument();

  38:   

  39:      domConfig.Load(Environment.CurrentDirectory + "/Application1.exe.config");

  40:      XmlNode addKey = domConfig.SelectSingleNode((XPath.Replace("?", key)));

  41:      if (addKey == null)

  42:      {

  43:          throw new ArgumentException("沒有找到<add key=‘" + key + "‘ value=.../>的配置節");

  44:      }

  45:      return addKey.Attributes["value"].InnerText;

  46:  }