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!
}

Similar codes

0 vote252 views1 answer
What error code i should return in asp.net core whether user name or password are incorrect
C#
0 vote235 views1 answer
How to split a string in f#
C#
7 votes210 views5 answers
C# or
C#
1 vote291 views1 answer
Move file c#
C#
4 votes230 views1 answer
Unity round float to nearest 10
C#
0 vote239 views1 answer
Unity input get axis
C#Unity
0 vote234 views1 answer
Why Duplicate "..TargetFrameworkAttribute" c# assemblies created
C#
1 vote228 views1 answer
C# get bits from float
C#
17 votes241 views5 answers
Linux delete content of folder
C#
0 vote218 views1 answer
Alpahbet incremnet in c#
C#