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ConfigurationManager.RefreshSection Method

Refreshes the named section so the next time that it is retrieved it will be re-read from disk.

Namespace:  System.Configuration
Assembly:  System.Configuration (in System.Configuration.dll)

public static void RefreshSection(
	string sectionName


Type: System.String
The configuration section name or the configuration path and section name of the section to refresh.

This method invalidates the cache for the specified configuration section without affecting other sections.

The following code example shows how to use the RefreshSection method to refresh the application settings configuration section.

// Create the AppSettings section.
// The function uses the GetSection(string)method 
// to access the configuration section. 
// It also adds a new element to the section collection.
public static void CreateAppSettings()
  // Get the application configuration file.
  System.Configuration.Configuration config =

  string sectionName = "appSettings";

  // Add an entry to appSettings.
  int appStgCnt =
  string newKey = "NewKey" + appStgCnt.ToString();

  string newValue = DateTime.Now.ToLongDateString() + 
    " " + DateTime.Now.ToLongTimeString();

  config.AppSettings.Settings.Add(newKey, newValue);

  // Save the configuration file.

  // Force a reload of the changed section. This 
  // makes the new values available for reading.

  // Get the AppSettings section.
  AppSettingsSection appSettingSection =

  Console.WriteLine("Using GetSection(string).");
  Console.WriteLine("AppSettings section:");

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.