Question

Is it possible to do something like this?

class A {     public virtual string prop     {         get         {             return 'A';         }     } } class B: A {     private string X;     public override string prop     {         get         {             return X;         }         set         {             X = value;         }     } } 

That is, the base class provides a virtual property with only a GET accessor, but the child class overrides the GET and also provides a SET.

The current example doesn’t compile, but perhaps I’m missing something here.

Added: To clarify, no I don’t want to redefine with new. I want to add a new accessor. I know it wasn’t in the base class, so it cannot be overriden. OK, let me try to explain how it would look without the syntactic sugar:

class A {     public virtual string get_prop()     {             return 'A';     } } class B: A {     private string X;     public override string get_prop()     {         return X;     }     public virtual string set_prop()     {         X = value;     } } 

Answer 1

No, this is not possible. Unfortunately you can not even override and change the accessor level (from protected to public for example), as documented on MSDN. I would recommend that you consider restructuring the code/class slightly and look for an alternative way to accomplish this task such as declaring the set accessor with the protected modifier using a SetProperty method in the derived class.