[Mono-list] Reflection odd exception

[Carlos Ble]

Thanks Elliott.
Following the InnerException I have noticed that the exception is
normal, the problem is simple. When trying to Autoconnect (because im
using glade) it searchs for OnWinDeleteEvent(object o, EventArgs e) and 
doesnt find it. So the problem is not in reflection neither assemblies, 
is my error; When you define signals on glade they must be implemented
in code with expected arguments. 
Sorry.

El mié, 19-10-2005 a las 11:42 +0100, Elliott Draper escribió:
> I'd hazard a guess and say it's because you don't have a reference to 
> the relevant Gdk assemblies, or they can't be found in the path, gac 
> etc. As such when it's creating this object, it's coming unstuck because 
> that class is using a type that it can't find, hence when you change it 
> to using types it can find (object, EventArgs), there's no problem.
> 
> Either way, you can check the inner exception of that exception to get 
> the exact error. It'll tell you in there what the problem is, and 
> whether it is in fact a problem with the call using that type, or 
> whether I'm way off the mark and it's something completely different :-)
> 
> Let me know how you get on.
> 
> Cheers,
> -= El =-
> 
> Carlos Ble wrote:
> 
> >Hi!
> >Iam working with reflection by loading some clases dinamically. This is
> >a piece of "pseudo" code:
> >System.Object[] paramsObj = new System.Object[] {...params...};
> >Assembly assembly = Assembly.GetExecutingAssembly();
> >System.Object childWin =       
> >  AppDomain.CurrentDomain.CreateInstanceAndUnwrap(assembly.FullName,    
> >  managerClass,true, BindingFlags.Instance|BindingFlags.Public,
> >  null, paramsObj, null, null, null);
> >
> >Everything works fine but one of the classes to load has this method:
> >
> >bool OnWinDeleteEvent (Gdk.Event e) // Instead of (object o, EventArgs
> >e).
> >{
> >  ...
> >  return true;
> >}
> >
> >I can compile all successfull but in runtime, CreateInstanceAndUnwrap
> >call launchs this exception: 
> >
> >Exception has been thrown by the target of an invocation.
> >in <0x0010e> System.Reflection.MonoCMethod:Invoke (System.Object obj,
> >BindingFlags invokeAttr, System.Reflection.Binder binder,
> >System.Object[] parameters, System.Globalization.CultureInfo culture)
> >in <0x0001c> System.Reflection.MonoCMethod:Invoke (BindingFlags
> >invokeAttr, System.Reflection.Binder binder, System.Object[] parameters,
> >System.Globalization.CultureInfo culture)
> >in <0x00200> System.Activator:CreateInstance (System.Type type,
> >BindingFlags bindingAttr, System.Reflection.Binder binder,
> >System.Object[] args, System.Globalization.CultureInfo culture,
> >System.Object[] activationAttributes)
> >in <0x0005b> System.Activator:CreateInstance (System.String
> >assemblyName, System.String typeName, Boolean ignoreCase, BindingFlags
> >bindingAttr, System.Reflection.Binder binder, System.Object[] args,
> >System.Globalization.CultureInfo culture, System.Object[]
> >activationAttributes, System.Security.Policy.Evidence securityInfo)
> >in <0x0002d> System.AppDomain:CreateInstance (System.String
> >assemblyName, System.String typeName, Boolean ignoreCase, BindingFlags
> >bindingAttr, System.Reflection.Binder binder, System.Object[] args,
> >System.Globalization.CultureInfo culture, System.Object[]
> >activationAttributes, System.Security.Policy.Evidence
> >securityAttributes)
> >in (wrapper remoting-invoke-with-check) System.AppDomain:CreateInstance
> >(string,string,bool,System.Reflection.BindingFlags,System.Reflection.Binder,object[],System.Globalization.CultureInfo,object[],System.Security.Policy.Evidence)
> >in <0x0002e> System.AppDomain:CreateInstanceAndUnwrap (System.String
> >assemblyName, System.String typeName, Boolean ignoreCase, BindingFlags
> >bindingAttr, System.Reflection.Binder binder, System.Object[] args,
> >System.Globalization.CultureInfo culture, System.Object[]
> >activationAttributes, System.Security.Policy.Evidence
> >securityAttributes)
> >in (wrapper remoting-invoke-with-check)
> >System.AppDomain:CreateInstanceAndUnwrap
> >(string,string,bool,System.Reflection.BindingFlags,System.Reflection.Binder,object[],System.Globalization.CultureInfo,object[],System.Security.Policy.Evidence)
> >
> >If I change arguments to (object o, EventArgs e), it works fine. Can
> >somebody write some comments about this behaviour?.
> >
> >Thanks
> >
> >
> >_______________________________________________
> >Mono-list maillist  -  Mono-list at lists.ximian.com
> >http://lists.ximian.com/mailman/listinfo/mono-list
> >  
> >
> 
> 
>