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c#listforeachnullskip

C# SkipWhile(Item => Item == null) still returns null items

I have a list of items:

List<Item> ItemList = new List<Item>;

Sometimes the list is only partially full or certain indices are not occupied and therefore when I iterate through the list using a foreach, it gives an error because the item is null. I want to reduce that list to those items which actually have a value. This is what I'm trying:

var FullItems = ItemList.SkipWhile(Item => Item == null).ToList();

But when I check the FullItems list, it still contains the items from ItemList that are null, so I'm just getting back the entire list that I started with.

Help?

Solution

  • SkipWhile(i => i == null) will skip until the first non-null item. Items after that first one which are null are still ignored.

    Use Where(i => i != null) to select all items that are not null.