Invoke method using Reflection on COM Object

Question

Hi, I have an instance of a COM object ... which is created like this..

Type type = TypeDelegator.GetTypeFromProgID("Broker.Application");
Object application = Activator.CreateInstance(type);

when i try to invoke a method :

type.GetMethod("RefreshAll").Invoke(application, null);

-> type.GetMethod("RefreshAll") returns null. When I try to get all the methods with type.GetMethods(), there is only these methods:

1. GetLifetimeService
2. InitializeLifetimeService
3. CreateObjRef
4. ToString
5. Equals
6. GetHashCode
7. GetType

Where is the RefreshAll Method? And how can I invoke it?

Answer 1

You can't use GetMethod on COM objects, you have to use a different way:

this.application.GetType().InvokeMember("RefreshAll", BindingFlags.InvokeMethod, null, this.application, null);

I am using this way in a old project that uses COM so it should work ok for you.