Return list of specific property of object using linq

Question

Given a class like this:

public class Stock
{
    public Stock() {}
    public Guid StockID { get; set; }
    public string Description { get; set; }
}


        

Answer 1

How about something like this? Can this be simplified?

List<TranCode> alltrans = new List<TranCode>();

foreach (var bh in obj1.obj2WithCollection.obj2Collection)
{
    alltrans.AddRange(bh.obj3WithCollection.Select(e => e.TransactionCode).ToList());
}

Answer 2

You could also do it like this:

ids = stockItems.ConvertAll<Guid>(o => o.StockID);

Answer 3

var list = stockItems.Select(item => item.StockID).ToList();