question on inheritance of interfaces..

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parez - 05 Mar 2008 22:52 GMT

I have interface IAbc,IDef

and interface IXyz inherits/implements(what is the right word) IAbc
and IDef

if i reflect the type IXyz it only shows me the members of IXyz and
not IAbc and IDef.

Why?

TIA

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chrisrock2@gmail.com - 06 Mar 2008 01:18 GMT

> I have interface IAbc,IDef
>
[quoted text clipped - 7 lines]
>
> TIA

Let me see if I understand this:
You have an interface named IXYZ that implements IABC and IDef

public interface IABC
{
void MethodFromABC();
}

public interface IDef
{
void MethodFromIDef();
}

public inteface IXYZ : IDef, IABC
{
void MethodFromIXYZ();
}

Running reflection against IXY only returns MethodFromIXYZ()?

Is that correct?

Reply to this Message

parez - 06 Mar 2008 14:18 GMT

On Mar 5, 8:18 pm, chrisro...@gmail.com wrote:

> > I have interface IAbc,IDef
>
[quoted text clipped - 32 lines]
>
> Is that correct?

Correct...

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Ben Voigt [C++ MVP] - 06 Mar 2008 14:43 GMT

> I have interface IAbc,IDef
>
[quoted text clipped - 5 lines]
>
> Why?

Because you didn't use BindingFlags.FlattenHierarchy

> TIA

Reply to this Message

parez - 06 Mar 2008 15:08 GMT

> > I have interface IAbc,IDef
>
[quoted text clipped - 9 lines]
>
> > TIA

can you please shed some more light on it..

Reply to this Message

Ben Voigt [C++ MVP] - 06 Mar 2008 15:31 GMT

>>> I have interface IAbc,IDef
>>
[quoted text clipped - 11 lines]
>
> can you please shed some more light on it..

Actually, it looks like BindingFlags.FlattenHierarchy is only needed for
static members (which interfaces don't have), sorry about that.
Type.GetMethods specifically guarantees that non-static members of a base
class are returned, but doesn't mention interfaces. You can always iterate
though the interfaces returned by Type.GetInterfaces, though, to find the
interface members.

Reply to this Message

chrisrock2@gmail.com - 06 Mar 2008 15:38 GMT

> > > I have interface IAbc,IDef
>
[quoted text clipped - 13 lines]
>
> - Show quoted text -

I don't think FlattenHierarchy works with interfaces. Found this on
the MSDN boards:

ShowInterfaceMethods(typeof(myInterface));

ShowInterfaceMethods(Type iType)
{

foreach (MethodInfo mi in
iType.GetMethods(BindingFlags.Public | BindingFlags.Instance |
BindingFlags.FlattenHierarchy))
{

Console.Writeline(mi.Name);
}

foreach (Type IBase in iType.GetInterfaces())
{

GetInterfaceMethods(IBase);

}

}

Reply to this Message

parez - 06 Mar 2008 21:19 GMT

> > > I have interface IAbc,IDef
>
[quoted text clipped - 11 lines]
>
> can you please shed some more light on it..

Thanks both.. .I got what i wanted..

But is there a reason why I have to do that? Is it an oversight on ms
side?

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question on inheritance of interfaces..

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