Using DefaultIfEmpty in Where clause : DefaultIfEmpty « LINQ « C# / CSharp Tutorial






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

public class MainClass {
    public static void Main() {
        string[] presidents = {"G", "H", "a", "H", "over", "Jack"};

        string jones = presidents.Where(n => n.Equals("H")).DefaultIfEmpty().First();
        if (jones != null)
            Console.WriteLine("H was found.");
        else
            Console.WriteLine("H was not found.");
    }
}








22.30.DefaultIfEmpty
22.30.1.DefaultIfEmpty Demo
22.30.2.Without Using DefaultIfEmpty
22.30.3.Using DefaultIfEmpty in Where clause