How to Check Nullable Type Equality Operators In C#

  1. using System.IO;  
  2. using System;  
  3. class NullableType   
  4. {  
  5.     static void Main(string[] args)   
  6.     {  
  7.         int ? i1 = null, i2 = null; // Both are null.  
  8.         if (i1 == i2) { // Operator returns true.  
  9.             Console.WriteLine("Both Nullable Type Variables are Equal");  
  10.         }  
  11.     }  
  12. }  
Output:

Both Nullable Type Variables are Equal