title: C# Get object name by instance
body: <p>I have:</p>
  
  <pre><code>class A
  {
   public object obj1 {get;set;}      
   public object obj2 {get;set;}      
   public object obj3 {get;set;}      
  }
  </code></pre>
  
  <p>Somewhere i have instance of obj2 for example.
  How can i get its name ("obj2") without using class A or instance A?</p>