修改和獲取web.config或app.config文件appSettings配置節(jié)中的Add里的value屬性 函數(shù)

   1:  /// <summary>

   2:  /// 修改web.config或app.config文件appSettings配置節(jié)中的Add里的value屬性

   3:  /// </summary>

   4:  /// <remarks>

   5:  /// 注意，調(diào)用該函數(shù)后，會(huì)使整個(gè)Web application重啟，導(dǎo)致當(dāng)前所有的會(huì)話丟失

   6:  /// </remarks>

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

   8:  /// <param name="strValue">修改后的value</param>

   9:  /// <exception cref="">找不到相關(guān)的鍵</exception>

  10:  /// <exception cref="">權(quán)限不夠，無(wú)法保存到web.config文件中</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(méi)有找到<add key='" + key + "' value=.../>的配置節(jié)");

  21:      }

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

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

  24:  

  25:  }

  26:  

  27:  /// <summary>

  28:  /// 獲取web.config或app.config文件appSettings配置節(jié)中的Add里的value屬性

  29:  /// </summary>

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

  31:  /// <param name="strValue">修改后的value</param>

  32:  /// <exception cref="">找不到相關(guān)的鍵</exception>

  33:  /// <exception cref="">權(quán)限不夠，無(wú)法保存到web.config文件中</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(méi)有找到<add key='" + key + "' value=.../>的配置節(jié)");

  44:      }

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

  46:  }