Interface Mapping with Metadata API

Thread view:

Enable EMail Alerts

Start New Thread

Thread rating:

Reinhard - 06 Apr 2005 14:14 GMT

I need to find out for class Foo whether a method implements a method
from interface IFoo or not. In case of method Bar() I can use
EnumMethodImpls, but for Baz() there is no MethodImpl entry.

interface IFoo
{
void Bar();
void Baz();
}

class Foo : IFoo {
static void Main() { }
void IFoo.Bar() {} // EnumMethodImpls works
public void Baz() {} // no MethodImpl in Metadata
public void Other() { }
}

Is there any other API in Metadata that can do this? I dont want to
compare Name and Signature manually.

Reply to this Message

Jon Shemitz - 06 Apr 2005 18:11 GMT

> I need to find out for class Foo whether a method implements a method
> from interface IFoo or not. In case of method Bar() I can use
> EnumMethodImpls, but for Baz() there is no MethodImpl entry.

I'm not sure what the question is. If the class supports the
interface, you know it implements all methods in the interface. Do you
mean that you want to know ehether the class implements a particular
method directly, or whether it inherits it?

Signature

www.midnightbeach.com

Reply to this Message

Reinhard - 06 Apr 2005 19:46 GMT

With API IMetaDataImport::EnumInterfaceImpls I determine that class Foo
implements interface IFoo. Fine. Next thing is, I need to know whether
a particular method of Foo is implementing a method defined by
interface IFoo. In my example Bar() & Baz().

In the case of Bar() which is implemented by *explicitly* specifying
the IFoo.Bar, I can use IMetaDataImport::EnumMethodImpls to see that
CFoo.Bar implements IFoo.Bar. However for methods which do not
explicitly implement the interface (as for Baz()), there is no entry in
MethodImpls. There must be another API to get that information. This is
what I am looking for.

Background: My project is a recorder which uses the Profiling API of
Whidbey to record activiations of methods from a given interface
(filtered by interface). Example: "record all method calls which
implement IComparable".

Reply to this Message

Reinhard - 07 Apr 2005 08:26 GMT

Someone emailed me with an answer. I unintentionally deleted this
message from my mailbox. Can you please resend your message?

Reply to this Message

Interface Mapping with Metadata API

Free Magazines