title: OnPropertyChange does not exist in the current context?
body: <p>Cant seem to see where I am going wrong? the OnPropertyChange is not being recondnised any suggestions?</p>
  
  <pre><code>  public class MedicationList : INotifyPropertyChanged 
  {
  
  
  
      public int MedicationID { get; set; }
  
      public string Description
      {
          get
          {
              return Description;
          }
          set
          { 
              OnPropertyChanged( "Description" );
              Description = value;
  
          }
      }
  }
  </code></pre>
  
  <p>}</p>
  
  <p><em>EDIT</em>  I have added   <code>public class MedicationList : INotifyPropertyChanged</code></p>