/// <summary>
/// Searches the Configuration Providers for an entry with the specified name
/// </summary>
/// <param name="name">Name of the entry to find</param>
/// <returns>Value of the found entry or null if none found</returns>
public static object GetSetting(string name)
{
object returnValue = null;
_lock.AcquireReaderLock(LockTimeout);
if (_lock.IsReaderLockHeld)
{
try
{
if (_settings != null)
{
returnValue = _settings.GetSetting(name);
}
else
{
LockCookie lockCookie = _lock.UpgradeToWriterLock(LockTimeout);
if (_lock.IsWriterLockHeld)
{
_settings = new InternalSettings();
_lock.DowngradeFromWriterLock(ref lockCookie);
returnValue = _settings.GetSetting(name);
}
else
{
throw new ApplicationException("Could not obtain lock to reopen settings system");
}
}
}
finally
{
_lock.ReleaseReaderLock();
}
}
return returnValue;
}
/// <summary>
/// Closes the settings system calling dispose on any SettingsProviders that implement IDisposable.
/// If GetSetting is called after Close has been called then the settings system will be reopened
/// </summary>
public static void Close()
{
_lock.AcquireWriterLock(LockTimeout);
try
{
if (_lock.IsWriterLockHeld)
{
if (_settings != null)
{
_settings.Dispose();
_settings = null;
}
}
else
{
throw new ApplicationException("Could not obtain lock to close settings system");
}
}
finally
{
if (_lock.IsWriterLockHeld)
{
_lock.ReleaseWriterLock();
}
}
}