System.Data.SQLite

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

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

#if INTEROP_CODEC
    internal override void SetPassword(byte[] passwordBytes)
    {

    /// 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(SQLiteErrorCode iErrCode, string zMessage);

#if INTEROP_CODEC
    internal abstract void SetPassword(byte[] passwordBytes);
    internal abstract void ChangePassword(byte[] newPasswordBytes);
#endif

    internal abstract void SetUpdateHook(SQLiteUpdateCallback func);

      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(SQLiteErrorCode iErrCode, string zMessage)
    {
      CheckDisposed();

      if (_sql == null)
          throw new InvalidOperationException("Database connection not valid for logging message.");

      _sql.LogMessage(iErrCode, zMessage);
    }

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

      if (_sql == null)
          throw new InvalidOperationException("Database connection not valid for logging message.");

      _sql.LogMessage((SQLiteErrorCode)iErrCode, zMessage);
    }

#if INTEROP_CODEC
    /// <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

    // 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(SQLiteErrorCode iErrCode, byte[] zFormat);

#if !PLATFORM_COMPACTFRAMEWORK
    [DllImport(SQLITE_DLL, CallingConvention = CallingConvention.Cdecl)]
#else
    [DllImport(SQLITE_DLL)]
#endif
    internal static extern SQLiteErrorCode sqlite3_file_control(IntPtr db, byte[] zDbName, int op, IntPtr pArg);

            sqlite_fact.Log += logHandler;

            cnn.Open();

            logevents = 0;

            cnn.LogMessage(SQLiteErrorCode.Error, "test log event");

            if (logevents != 1)
                throw new Exception(String.Format(
                    "Log event count {0} incorrect.", logevents));

            cnn.Close();