public void Execute(List<Entities.GameRoundCard> roundCards)
{
string connectionString = ConfigurationManager.ConnectionStrings["DefaultConnection"].ConnectionString;
SqlBulkCopy bulkCopy = new SqlBulkCopy(connectionString);
bulkCopy.DestinationTableName = "GameRoundCard";
bulkCopy.WriteToServer(roundCards.ToDataTable());
}