Extension Method On Null Reference : Extension « Class « C# / CSharp Tutorial

1. C# / CSharp Tutorial
2. Class
3. Extension

using System;
using System.ComponentModel;


    static class NullUtil
    {
        public static bool IsNull(this object x)
        {
            return x == null;
        }
    }

    class MainClass
    {
        static void Main()
        {
            object y = null;
            Console.WriteLine(y.IsNull());
            y = new object();
            Console.WriteLine(y.IsNull());
        }
    }