Return list of specific property of object using linq
var list = stockItems.Select(item => item.StockID).ToList();
You could also do it like this:
ids = stockItems.ConvertAll<Guid>(o => o.StockID);
var list = stockItems.Select(item => item.StockID).ToList();
You could also do it like this:
ids = stockItems.ConvertAll<Guid>(o => o.StockID);