public Task Send(IList <Message> messages)
{
if (messages == null || messages.Count == 0)
{
return(Task.FromResult <object>(null));
}
var parameter = _dbProviderFactory.CreateParameter();
parameter.ParameterName = "Payload";
parameter.DbType = DbType.Binary;
parameter.Value = SqlPayload.ToBytes(messages);
var operation = new DbOperation(_connectionString, _insertDml, _logger, parameter);
return(operation.ExecuteNonQueryAsync());
}