System.Data.SQLite

      return UnsafeNativeMethods.sqlite3_errcode(_sql);
    }
    /// Gets the last SQLite extended error code
    internal override int ExtendedResultCode()
    {
      return UnsafeNativeMethods.sqlite3_extended_errcode(_sql);
    }

    /// Add a log message via the SQLite sqlite3_log interface.
    internal override void LogMessage(int iErrCode, string zMessage)
    {
      UnsafeNativeMethods.sqlite3_log(iErrCode, ToUTF8(zMessage));
    }

    internal override void SetPassword(byte[] passwordBytes)
    {
      int n = UnsafeNativeMethods.sqlite3_key(_sql, passwordBytes, passwordBytes.Length);
      if (n > 0) throw new SQLiteException(n, SQLiteLastError());
    }

    /// <summary>
    /// Returns the extended numeric result code for the most recent failed SQLite API call 
    /// associated with the database connection. 
    /// </summary>
    /// <returns>Extended result code</returns>
    internal abstract int ExtendedResultCode();

    /// <summary>
    /// Add a log message via the SQLite sqlite3_log interface.
    /// </summary>
    /// <param name="iErrCode">Error code to be logged with the message.</param>
    /// <param name="zMessage">String to be logged.  Unlike the SQLite sqlite3_log() 
    /// interface, this should be pre-formatted.  Consider using the 
    /// String.Format() function.</param>
    /// <returns></returns>
    internal abstract void LogMessage(int iErrCode, string zMessage);

    internal abstract void SetPassword(byte[] passwordBytes);
    internal abstract void ChangePassword(byte[] newPasswordBytes);

    internal abstract void SetUpdateHook(SQLiteUpdateCallback func);
    internal abstract void SetCommitHook(SQLiteCommitCallback func);
    internal abstract void SetTraceCallback(SQLiteTraceCallback func);
    internal abstract void SetRollbackHook(SQLiteRollbackCallback func);

    /// Enables or disabled extended result codes returned by SQLite
    public int ExtendedResultCode()
    {
      if (_sql == null)
        throw new InvalidOperationException("Database connection not valid for getting extended result code.");
      return _sql.ExtendedResultCode();
    }

    /// Add a log message via the SQLite sqlite3_log interface.
    public void LogMessage(int iErrCode, string zMessage)
    {
      _sql.LogMessage(iErrCode, zMessage);
    }

    /// <summary>
    /// Change the password (or assign a password) to an open database.
    /// </summary>
    /// <remarks>
    /// No readers or writers may be active for this process.  The database must already be open
    /// and if it already was password protected, the existing password must already have been supplied.

#if !PLATFORM_COMPACTFRAMEWORK
    [DllImport(SQLITE_DLL, CallingConvention = CallingConvention.Cdecl)]
#else
    [DllImport(SQLITE_DLL)]
#endif
    internal static extern int sqlite3_extended_errcode(IntPtr db);

    // Since sqlite3_log() takes a variable argument list, we have to overload declarations
    // for all possible calls.  For now, we are only exposing a single string, and 
    // depend on the caller to format the string.
#if !PLATFORM_COMPACTFRAMEWORK
    [DllImport(SQLITE_DLL, CallingConvention = CallingConvention.Cdecl)]
#else
    [DllImport(SQLITE_DLL)]
#endif
    internal static extern void sqlite3_log(int iErrCode, byte[] zFormat);

    #endregion
  }

#if PLATFORM_COMPACTFRAMEWORK
  internal abstract class CriticalHandle : IDisposable
  {

namespace test
{
  internal class TestCases : TestCaseBase
  {
    private List<string> droptables = new List<string>();
    private List<string> maydroptable = new List<string>();
    private long logevents = 0;
    

    internal TestCases()
    {
    }

    internal TestCases(DbProviderFactory factory, string connectionString, string factoryString)

    }

    //Applying EventHandler
    public void OnLogEvent(object sender, LogEventArgs logEvent)
    {
        int err_code = logEvent.ErrorCode;
        string err_msg = logEvent.Message;
        logevents++;
    }

    /// <summary>
    /// Tests SQLITE_CONFIG_LOG support.
    /// </summary>
    [Test]
    internal void SetLogCallbackTest()
    {
        if (_factstring.ToLower().Contains("sqlite"))
        {
            SQLiteConnection cnn = new SQLiteConnection(_cnnstring.ConnectionString);

            cnn.Shutdown();  // we need to shutdown so that we can change config options

            // create and add a log event handler
            SQLiteLogEventHandler logHandler = new SQLiteLogEventHandler(OnLogEvent); 
            cnn.Log += logHandler;

            cnn.Open();



            logevents = 0;



            cnn.LogMessage(1, "test log event");

            if (logevents != 1)
                throw new Exception("Log event count incorrect.");

            cnn.Close();

            cnn.Shutdown();  // we need to shutdown so that we can change config options

            // remove the log handler before the connection is closed.
            cnn.Log -= logHandler;