>>>>E.g. I have middlewarebase class that has protected virtual property. I have middlewareMain class that has Invoke method and the two methods to set and return invokestring. I also have Sales class with the exact same methods of setting and getting that string.
>>>>
>>>>I set the invokestring in the MiddlewareMain and I need to read it in Sales class.
>>>
>>>Of course - if you set an instance property of classX, don't expect that this will change an instance property of classY
>>
>>But this is what I need. I need to set the string in one class and read it in the other class.
>
>Then I misunderstood what you want to do and Bonnie is right - a static property is the only way.

I now have another question. Say, I have

Application 
{

  Database Database {get;set}

   public Application(Database database)
   {
       Database = database;
   }
}

How can I from the database class set properties of the Application class (its parent in VFP terminology)?