Question

I have a class named config with one string field named key.

When I apply the GET property of the class, the property has to return one variable key in different types (Int or bool or String).

I implemented it as follow:

  public enum RetType {RetInt, RetBool, RetString};
  ...
  public object PolimorphProperty(string key, RetType how) 
  {
      get 
     { 
        switch (how)
        {
         case RetType.RetInt:
           ...;
        case RetType.RetBool:
           ...;
        case RetType.RetString:
           ...;
        }
     }  
 }

But the problem that PolimorphProperty returns Object type.

What should I change in the code to get the appropriate type (int,bool,string), not the object?

Answer 1

Do this:

public T PolimorphProperty<T>(string key)
{
    return (T) objectInstanceHere;
}

Usage example:

int i = PolimorphProperty<int>("somekey");

And this supports the http://www.antiifcampaign.com/

As much as possible avoid switch, if for that matter, in a polymorphic code.