System.Configuration.ConfigurationManager.OpenExeConfiguration 方法 (ConfigurationUserLevel)

System.Configuration.ConfigurationManager.OpenExeConfiguration 方法 (ConfigurationUserLevel)例子

下面的代码示例演示如何使用 OpenExeConfiguration 方法。

// Get the roaming configuration file associated 
// with the application.
// This function uses the OpenExeConfiguration(
// ConfigurationUserLevel userLevel) method to 
// get the configuration file.
// It also creates a custom ConsoleSection and 
// sets its ConsoleEment BackgroundColor and
// ForegroundColor properties to blue and yellow
// respectively. Then it uses these properties to
// set the console colors.  
public static void GetRoamingConfiguration()
{
  // Define the custom section to add to the
  // configuration file.
  string sectionName = "consoleSection";
  ConsoleSection currentSection = null;

  // Get the roaming configuration 
  // that applies to the current user.
  Configuration roamingConfig =
    ConfigurationManager.OpenExeConfiguration(
     ConfigurationUserLevel.PerUserRoaming);

  // Map the roaming configuration file. This
  // enables the application to access 
  // the configuration file using the
  // System.Configuration.Configuration class
  ExeConfigurationFileMap configFileMap =
    new ExeConfigurationFileMap();
  configFileMap.ExeConfigFilename = 
    roamingConfig.FilePath;

  // Get the mapped configuration file.
  Configuration config =
    ConfigurationManager.OpenMappedExeConfiguration(
      configFileMap, ConfigurationUserLevel.None);

  try
    {
      currentSection =
           (ConsoleSection)config.GetSection(
             sectionName);

      // Synchronize the application configuration
      // if needed. The following two steps seem
      // to solve some out of synch issues 
      // between roaming and default
      // configuration.
      config.Save(ConfigurationSaveMode.Modified);

      // Force a reload of the changed section, 
      // if needed. This makes the new values available 
      // for reading.
      ConfigurationManager.RefreshSection(sectionName);

      if (currentSection == null)
      {
        // Create a custom configuration section.
        currentSection = new ConsoleSection();

        // Define where in the configuration file 
        // hierarchy the associated 
        // configuration section can be declared.
        // The following assignment assures that 
        // the configuration information can be 
        // defined in the user.config file in the 
        // roaming user directory. 
        currentSection.SectionInformation.AllowExeDefinition =
          ConfigurationAllowExeDefinition.MachineToLocalUser;

        // Allow the configuration section to be 
        // overridden by lower-level configuration files.
        // This means that lower-level files can contain
        // the section (use the same name) and assign 
        // different values to it as done by the
        // function GetApplicationConfiguration() in this
        // example.
        currentSection.SectionInformation.AllowOverride =
          true;

        // Store console settings for roaming users.
        currentSection.ConsoleElement.BackgroundColor =
            ConsoleColor.Blue;
        currentSection.ConsoleElement.ForegroundColor =
            ConsoleColor.Yellow;

        // Add configuration information to 
        // the configuration file.
        config.Sections.Add(sectionName, currentSection);
        config.Save(ConfigurationSaveMode.Modified);
        // Force a reload of the changed section. This 
        // makes the new values available for reading.
        ConfigurationManager.RefreshSection(
          sectionName);
      }
  }
  catch (ConfigurationErrorsException e)
  {
      Console.WriteLine("[Exception error: {0}]",
          e.ToString());
  }

  // Set console properties using values
  // stored in the configuration file.
  Console.BackgroundColor =
    currentSection.ConsoleElement.BackgroundColor;
  Console.ForegroundColor =
    currentSection.ConsoleElement.ForegroundColor;
  // Apply the changes.
  Console.Clear();

  // Display feedback.
  Console.WriteLine();
  Console.WriteLine(
    "Using OpenExeConfiguration(ConfigurationUserLevel).");
  Console.WriteLine(
      "Configuration file is: {0}", config.FilePath);
}

相关资源

ConfigurationManager 类

OpenExeConfiguration 重载

System.Configuration 命名空间

ConfigurationUserLevel

Configuration

MSDN