title: How to make a IsNull() method
body: <p>I'm trying to make a method similar to .ToString() that checks whether the object is null or not. I just done know how to make it accessible without calling the class</p>
  
  <pre><code>public class ObjectExtensions
  {
      public static bool IsNull(object obj)
      {
          bool val = false;
          if (obj == null)
          { val = true; }
          return val;
      }
  }
  </code></pre>