FirstOrDefault

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

class Program
{
    static void Main()
    {
        int[] numbers = { 1, 2, 3, 4, 5 };
        int firstBigError = numbers.First(n => n > 10); // Exception 
        int firstBigNumber = numbers.FirstOrDefault(n => n > 10); // 0

        Console.WriteLine(firstBigError);
        Console.WriteLine(firstBigNumber);
    }
}