System.Data.SQLite

          fileName = MaybeCombinePath(directory, XmlConfigFileName);

          if (File.Exists(fileName))
              return fileName;

          return null;
      }

      /////////////////////////////////////////////////////////////////////////

      /// <summary>
      /// Queries and returns the value of the specified setting, using the
      /// specified XML configuration file.
      /// </summary>
      /// <param name="fileName">
      /// The name of the XML configuration file to read.
      /// </param>
      /// <param name="name">
      /// The name of the setting.
      /// </param>
      /// <param name="default">
      /// The value to be returned if the setting has not been set explicitly
      /// or cannot be determined.
      /// </param>
      /// <param name="expand">
      /// Non-zero to expand any environment variable references contained in
      /// the setting value to be returned.  This has no effect on the .NET
      /// Compact Framework.
      /// </param>
      /// <returns>
      /// The value of the setting -OR- the default value specified by
      /// <paramref name="default" /> if it has not been set explicitly or
      /// cannot be determined.  By default, all references to existing
      /// environment variables will be expanded to their corresponding values
      /// within the value to be returned unless either the "No_Expand" or
      /// "No_Expand_<paramref name="name" />" environment variable is set [to
      /// anything].
      /// </returns>
      private static string GetSettingValueViaXmlConfigFile(
          string fileName, /* in */
          string name,     /* in */
          string @default, /* in */
          bool expand      /* in */
          )
      {
          try
          {
              if ((fileName == null) || (name == null))
                  return @default;

              XmlDocument document = new XmlDocument();

              document.Load(fileName); /* throw */

              XmlElement element = document.SelectSingleNode(
                  HelperMethods.StringFormat(CultureInfo.InvariantCulture,
                  "/configuration/appSettings/add[@key='{0}']", name)) as
                  XmlElement; /* throw */

              if (element != null)
              {
                  string value = null;

                  if (element.HasAttribute("value"))
                      value = element.GetAttribute("value");

#if !PLATFORM_COMPACTFRAMEWORK
                  if (expand && !String.IsNullOrEmpty(value))
                      value = Environment.ExpandEnvironmentVariables(value);
#endif

                  if (value != null)
                      return value;
              }
          }
#if !NET_COMPACT_20 && TRACE_SHARED
          catch (Exception e)
#else
          catch (Exception)
#endif
          {
#if !NET_COMPACT_20 && TRACE_SHARED
              try
              {
                  Trace.WriteLine(HelperMethods.StringFormat(
                      CultureInfo.CurrentCulture, "Native library " +
                      "pre-loader failed to get setting \"{0}\" value " +
                      "from XML configuration file \"{1}\": {2}", name,
                      fileName, e)); /* throw */
              }
              catch
              {
                  // do nothing.
              }
#endif
          }

          return @default;
      }

      /////////////////////////////////////////////////////////////////////////
      /// <summary>
      /// Queries and returns the value of the specified setting, using the XML
      /// configuration file and/or the environment variables for the current
      /// process and/or the current system, when available.
      /// </summary>

          if (name == null)
              return @default;

          /////////////////////////////////////////////////////////////////////

          #region Debug Build Only
#if DEBUG
          //
          // NOTE: We are about to read a setting value from the environment
          //       or possibly from the XML configuration file; create or
          //       increment the appropriate statistic now.
          //
          DebugData.IncrementSettingReadCount(name, false);
#endif
          #endregion

          /////////////////////////////////////////////////////////////////////

          bool expand = true; /* SHARED: Environment -AND- XML config file. */

          /////////////////////////////////////////////////////////////////////

#if !PLATFORM_COMPACTFRAMEWORK
          string value = null;

          if (Environment.GetEnvironmentVariable("No_Expand") != null)
          {
              expand = false;
          }
          else if (Environment.GetEnvironmentVariable(
                  HelperMethods.StringFormat(CultureInfo.InvariantCulture,

          }
#endif

          /////////////////////////////////////////////////////////////////////

          #region Debug Build Only
#if DEBUG
          //
          // NOTE: We are about to read a setting value from the XML
          //       configuration file; create or increment the appropriate
          //       statistic now.
          //
          DebugData.IncrementSettingReadCount(name, true);
#endif
          #endregion

          /////////////////////////////////////////////////////////////////////




























          return GetSettingValueViaXmlConfigFile(






















              GetXmlConfigFileName(), name, @default, expand);

      }

      /////////////////////////////////////////////////////////////////////////

#if !PLATFORM_COMPACTFRAMEWORK
      private static string ListToString(IList<string> list)
      {