private async Task <List <Role> > InitRolesInForm() { try { string request = tcpService.SerializeInitRolesInFormRequest(SingletoneObj.User); byte[] data = await tcpService.CodeStreamAsync(request); await SingletoneObj.Stream.WriteAsync(data, 0, data.Length); string response = await tcpService.DecodeStreamAsync(SingletoneObj.Stream); List <Role> roles = tcpService.DeserializeInitRolesInFormResponse(response); return(roles); } catch (Exception) { return(new List <Role>()); } }