private async Task <string> GetObjectName(TmAddr tmAddr) { if (tmAddr == null || tmAddr.Type == TmType.Unknown) { return(""); } const int bufSize = 1024; var buf = new byte[bufSize]; await Task.Run(() => _native.TmcDntGetObjectName(_cid, (ushort)tmAddr.Type.ToNativeType(), (short)tmAddr.Ch, (short)tmAddr.Rtu, (short)tmAddr.Point, ref buf, bufSize)) .ConfigureAwait(false); return(EncodingUtil.Win1251BytesToUtf8(buf)); }