Hi,

I have a COM component which calls methods on a .NET object.  However, some
methods originate in an inherited interface.  COM cannot "see" the inherited
methods.

In the code fragment below, if a COM component creates an instance of Child
class, it cannot "see" the property ParentKey.

Am I missing something?  Is there a way around this?  Do I have to duplicate
methods and properties in the child class/interface that are inherited from
the parent, for COM to "see" them?

Regards
Gem

---- .NET Code fragment ----
public interface IParent {
   string ParentKey { get; set; }
}

public class Parent : IParent {
   private string key = "";

   public string ParentKey {
       get {
           return this.key;
       }
       set {
           this.key = value;
       }
   }   // public string ParentKey...
}

public interface IChild : IParent {
   string ChildKey { get; set; }
}

public class Child : Parent {
   private string childKey = "";

   public string ChildKey {
       get {
           return this.childKey;
       }
       set {
           this.childKey = value;
       }
   }   // public string ChildKey...
}

---- COM code fragment ----

Dim childObject as ChildParentNet.Child
Dim child as ChildParentNet.IChild

Set childObject = new ChildParentNet.Child
set child = childObject

Both child.ParentKey and childObject.ParentKey throw a 438, "Object doesn't
support this property or method" exception.

Gem