Use SingleOrDefault : SingleOrDefault « LINQ « C# / CSharp Tutorial

1. C# / CSharp Tutorial
2. LINQ
3. SingleOrDefault

using System;
using System.Collections;
using System.Collections.Generic;
using System.Text;
using System.Linq;

public class MainClass{
   public static void Main(){
       int[] numbers = {1, 2, 3, 4, 5, 6, 7, 8, 9};
       var query = numbers.SingleOrDefault(n => n > 9);
       Console.Write(query);
   }
}