c# get index of item in list
Array.IndexOf(arrName, searchingFor)
c# get index of item in list
Array.IndexOf(arrName, searchingFor)
c# list any retun indec
public class Item {
public int Id { get; set; }
public Item() {}
public Item(int id) { Id = id; }
}
List<Item> idList = { new Item(1), new Item(2), new Item(3) };
Item[] idLArr = [ new Item(1), new Item(2), new Item(3) ];
Item newItem = new Item(1);
// Using a lambda expression we can do the following query
int index = idList.FindIndex(item => item.Id == newItem.Id);
int arrIndex = Array.IndexOf(idLArr, newItem.Id);
//Then use it like so:
if (index != -1)
{
// The item exists at index 0!
}
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