C# does value exist in list

public int GetItemFromList() {
	List<Item> list = new List<Item>(
      new Item(1),
      new Item(2),
      new Item(3)
    );

	Item testItem = new Item(1);

	// Inside FindIndex() you can specify a lambda expression where you
	// query if an item exists like a boolean test.
	int index = list.FindIndex(item => testItem.Id == item.Id);

	// in this case out testItem.Id (1) is equal to an item in the list
	if (index > -1)
	{
		// We get here with the index 0!
      	return index;
	}
}

public class Item
{
	public int Id { get; set; }
	public Item() { }
	public Item(int id)
	{
		Id = id;
	}
}

Similar codes

2 votes262 views1 answer
C# implicit operator
C#
5 votes297 views1 answer
Unity createassetmenu
C#Unity
1 vote273 views1 answer
C# convert seconds to hours minutes seconds
C#
0 vote277 views1 answer
C# if break
C#
0 vote285 views1 answer
Process method in scala
C#
0 vote299 views1 answer
Unity rb.addexplosionforce 2d
C#
0 vote271 views2 answers
C# distinct comparer multiple properties
C#
4 votes270 views1 answer
What value of combobox index c#
C#
0 vote290 views1 answer
Aws asp.net tutorial
C#
0 vote283 views1 answer
Cant see my classes in inspector
C#