How can I select items from a list lower bound to upper bound?

Question

 lowerbound = (CurrentPage - 1) * 10;
 upperbound = (CurrentPage * 10) -1;

I have an upper bound and lower bound two integers that specify what is the lowest and highest element between which elements from the List have to be accessed

List<string> take = list.Take(upperbound).ToList();

How do I select items from a list lower bound to upper bound?

foreach (string elemt in take)
{
    HtmlGenericControl div = new HtmlGenericControl("div");
    div.ID = "div" + elemt;

    Label text = new Label();
    text.Text = elemt;
    div.Controls.Add(text);
    divtest.Controls.Add(div);
}

Possible duplicate: http://stackoverflow.com/questions/1301316/c-sharp-equivalent-of-python-slice-operation — ean5533, May 20 '13 at 15:58

score 9 · Accepted Answer · answered May 20 '13 at 15:57

9

IEnumerable<TSource>.Skip(lowerBound).Take(upperBound-lowerBound)

MSDN documentation for Skip and Take.

answered May 20 '13 at 15:57

Boris B.

4,933
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score 5 · Answer 2 · edited May 20 '13 at 16:00

5

Use List's GetRange method

 take.GetRange(lowerbound, upperbound - lowerbound + 1);

edited May 20 '13 at 16:00

ean5533

8,884
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answered May 20 '13 at 15:58

I4V

34,891
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score 3 · Answer 3 · answered May 20 '13 at 15:57

3

Try:

list.Skip(lowerBound).Take(upperbound - lowerbound);

answered May 20 '13 at 15:57

Ben Reich

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score 1 · Answer 4 · answered May 20 '13 at 15:59

1

Use LINQ

For items between lowerbound and upperbound

list.Skip(lowerbound).Take(upperbound - lowerbound);

Or if you have paging use

list.Skip((PageNumber - 1) * PageSize).Take(PageSize);

answered May 20 '13 at 15:59

arunlalam

1,838
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score 0 · Answer 5 · answered May 20 '13 at 15:56

0

for(int i = lowerBound; i <= upperBound; ++i)
{
   string elemt = take(i);
}

answered May 20 '13 at 15:56

Moo-Juice

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How can I select items from a list lower bound to upper bound?

5 Answers5