C# Check if List contains element

Question

I have a class Places that have the elements building, room, shelf and box.

It looks like




BUILDING
ROOM
SHELF
BOX




House1
100
1
A

House1
100
1
B

House1
100
1
C

House2
101
2
B

At the moment I have the problem, if I select building and a room (e.g. House1, 100), my combobox for the shelf is showing shelf "1" for three times.

List lstPlaces = new List();
IEnumerable lst = AllShelfAndBoxes();
            foreach (var item in lst)
            {
                if (item.Building == str_Building && item.Room == str_Room)
                    lstPlaces.Add(item);
            }
....

So what do I have to do, that the shelf is added only one time - and not for every building and room? At that point it is not necessary to add the building and room to the list. But I need a List to return and not a List.

Hope you understand my problem? Kind regards.

C# Check if List<T> contains element

0 Answers