public static IDataTable Project(IDataTable table, IEnumerable <int> columns, Stream output = null)
{
var validColumn = new HashSet <int>(columns);
var writer = new DataTableWriter(table.Columns.Select((c, i) => Tuple.Create(c, i)).Where(c => validColumn.Contains(c.Item2)).Select(c => c.Item1), output);
var projector = new DataTableProjector(writer, columns);
table.Process(projector);
return(writer.GetDataTable());
}
public IDataTable GetDataTable()
{
return(_writer.GetDataTable());
}
