How to find item in the list using item

Question

I am having list using the following item below

Id CategoryName

1  CinemaGallery,CinemaEvents,Cinema

2  CinemaNews, Cinema, CinemaTrailer

3  TamilCinemaNews, TamilCinema, Tamil

Now i have to split each categoryname and have to find the list that contains each category. For example I have to find the list that has Categoryname only Cinema or only CinemaEvents or only TamilCinema.

I used Contains method but it returns all the list which has Cinema in the each string.

Could you please help me?

you may show expected output on your example criteria, This will make the question more clear — Habib, Oct 15 '12 at 07:01

Tim Schmelter · Answer 1 · 2012-10-15T07:08:26.127

Then you just have to use == instead of IndexOf or Contains:

var cinema = list.First(i => i.Name == "Cinema");

or using List.Find:

var cinema = list.Find(i => i.Name == "Cinema");

You can use Enumerable.Where or List.FindAll to find all matching elements:

var cinemas = list.FindAll(i => i.Name == "Cinema");
cinemas = list.Where(i => i.Name == "Cinema").ToList();

Edit (to take your last edit into account):

var allCinemasOnly = list
        .Where(l => l.All(cat => cat.CategoryName == "Cinema"))
        .ToList();

score 0 · Answer 2 · answered Oct 15 '12 at 06:50

0

Try something like this:

foreach (string s in myList)
{
    if (s.Contains("Cinema") && !s.Contains("Cinema "))
    {
        //do comething with 's'
    }
}

answered Oct 15 '12 at 06:50

kdmurray

2,988
3
32
47

Why not just equality? http://stackoverflow.com/q/1659097/1689451 – Rudolf Mühlbauer Oct 15 '12 at 06:52
I'm assuming that each line he gave is what's contained in the list entries. And by the looks of the most recent edit I may have been correct. – kdmurray Oct 15 '12 at 06:56

score 0 · Answer 3 · answered Oct 15 '12 at 06:52

0

Try this:

List<string> yourNewList = yourList.Select(x => x = "Cinema").ToList();

answered Oct 15 '12 at 06:52

Habibillah

27,347
5
36
56

Shouldn't it be `.Where(x => x == "Cinema")`? – matthewr Oct 15 '12 at 06:54
@MatthewRz: No, it should be `.Where(x => x.Name == "Cinema").First()` – Tim Schmelter Oct 15 '12 at 06:56
@TimSchmelter Ahh, I didn't see his update. – matthewr Oct 15 '12 at 06:58
@MatthewRz: That was true before his updates, now he needs `.Where(x => x.Name == "Cinema").ToList()`. – Tim Schmelter Oct 15 '12 at 07:00

Neeraj Kumar Gupta · Answer 4 · 2012-10-15T07:29:37.373

0

You can do like this ..

var itm = list.Find(a =>
        {
            var s = a.Split(Convert.ToChar(",")).ToList();
            return s.Exists(b => b == "Cinema");
        });

edited Oct 15 '12 at 07:29

answered Oct 15 '12 at 06:52

Neeraj Kumar Gupta

2,157
7
30
58

Usman · Answer 5 · 2012-10-15T07:11:21.337

0

try this

var list = yourlist.Where(a => a == "Cinema").ToArray();

edited Oct 15 '12 at 07:11

answered Oct 15 '12 at 06:59

Usman

3,200
3
28
47

How to find item in the list using item

5 Answers5