Is there any method or way in C# to add items in a List<T> on a LIFO basis?

this is an easy one. I have a List<T> in C# and I woudl like to add some elements on a LIFO basis, so on the "bottom" of the List<T>. For several r开发者_如何学Pythoneasons I cannot use the Stack class.

Thanks

Francesco

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Yes the Add() method adds to the end of the list, you can use RemoveAt(yourList.Count - 1) to remove last, and yourList[yourList.Count - 1] to peek at the last.

Though I'm curious, why can't you use the Stack() class?

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Items added to a List<T> using the Add method are placed at the end of the list. If you want to process the list so that it's LIFO, either iterate in reverse (meaning you change the way you process the list) or always use Insert(0, item) to add elements to the list (meaning you change the way you populate the list).

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You can insert anywhere in the list you'd like.

http://msdn.microsoft.com/en-us/library/sey5k5z4.aspx

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Insert(0,T)

http://msdn.microsoft.com/en-us/library/sey5k5z4.aspx

This isn't a stack though. If you want to remove objects again as you use them, I'd consider extending a stack...

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LIFO and FIFO is not a question of adding but a question of removing.

You can use List<T> and always pick up the last item:

List<int> list = Enumerable.Range(1,100).ToList();
While(list.Count>0)
{
    list.RemoveAt(list.Count-1);
}