C# Late Binding "Unknown Error"

[nelsonivan]

Hi,

i'm trying to reference some objects using reflection and Late Binding
accessing.

The Object API to his methods it's easy to understand, and it's as
"Object.Met hod" - aka. "Clientes.Exist e"-
So, to reference this object, it was simplier to me resolving this
with reflection, and it was something like this:

Type motorPriBS = Type.GetTypeFro mProgID("GcpBS6 01.GCPBS");

object clientes = motorPriBS.i .InvokeMember(" Clientes",

System.Reflecti on.BindingFlags .GetProperty,
null,
hMotorPriBS,
null);

bool existeAl = (bool)motorPriB S.InvokeMember( "Existe",

System.Reflecti on.BindingFlags .InvokeMethod,
null,
comercial,
new object[] {"0002"});
And it works well.

Now, the present situation changed the object API, and it's
referencing to "Object.Propert y.Method" -aka
"Comercial.Clie ntes.Existe"-

The code that i wrote is like this:

Type motorPriBS = Type.GetTypeFro mProgID("GcpBS6 01.GCPBS");

//invoke object
object comercial= motorPriBS.Invo keMember("Comer cial",

System.Reflecti on.BindingFlags .GetProperty,
null,
hMotorPriBS,
null);

//invoke propertie
object clientes = motorPriBS.Invo keMember("Clien tes",
System.Reflecti on.BindingFlags .GetProperty,
null,
comercial,
null);

//invoke method
bool existeAl = (bool)motorPriB S.InvokeMember( "Existe",

System.Reflecti on.BindingFlags .InvokeMethod,
null,
comercial,
new object[] {"0002"});

And, this don't work. When i invoke the method, it returns a error
"Unknown Name" and it seems that the object don't recognize the method
name "Existe". And i've sure it really exists.
Can anyone give a help in this matter?

[Jon Skeet [C# MVP]]

On Jan 21, 2:04 pm, nelsoni...@clix .pt wrote:

<snip>

And, this don't work. When i invoke the method, it returns a error
"Unknown Name" and it seems that the object don't recognize the method
name "Existe". And i've sure it really exists.

Can anyone give a help in this matter?

It would be a lot easier to follow this if you could produce a short
but complete program to demonstrate the problem.

Looking at the chaining though, I'd have expected the 4th parameter to
your last InvokeMember call to be clientes instead of comercial.

Jon