Serialization Problems In Powerbuilder 11

[alfa123456]

Hi
I'm using PB 11.2 built 8739
I have a wsdl file and I'm trying to use serialization classes in my
PB APP.
I wrote the below code

po_header.PO_No=mystring2'

po_header.mystring='mystring'

#if defined PBDOTNET THEN
@system.object SO
SO=create dt_purchaseorder_header
SO=po_header

@System.Xml.Serialization.XmlSerializer serializer

serializer=CREATE @System.Xml.Serialization.XmlSerializer(SO.gettype
())

@System.IO.StreamWriter WriteFileStream
WriteFileStream = create @System.IO.StreamWriter("C:\XML_TEST
\test.xml")

serializer.Serialize(WriteFileStream, SO)
WriteFileStream.Close()
#end if

But when it comes to the below line of code
serializer.Serialize(WriteFileStream, SO)

I'm getting an exception.
SystemInvalidOperationException void checksupported of object
system.xml.serialization.typedesc

dt_purchaseorder_header contains as public instances two strings.
If I try to serialize the same object in Visual Studio everything
works OK !. So It have to do something with Powerbuilder.
I think it has something to do with the System.Object ? Does not
recognize what type of object it is ? I don't Know.
How can I use serialization classes in Powerbuilder or is it
something I did wrong ?
Thank you

 

[miguelleeuwe]

Sorry no idea of pb 11 and serialization but ...

in one of your first lines there seems to be a ' missing?

po_header.PO_No=mystring2'

should be
po_header.PO_No='mystring2'


??????????

suppose I'm wrong but just in case it might be that little detail

regards,
Miguel L.

 

[alfa123456]

Ahhhh. Yes-Missed that . But that is not the reason of the exception.
Thanks anyway.

 

[miguelleeuwe]

Okay Alpha,

happy to hear so. Sorry not being able to help a little bit more.

(did you try to monitor using depends.exe? It might give you an indication of where things go wrong???)

Happy new year.

regards,
Miguel L.

 

[alfa123456]

Hi ,
I don't think it will help me a lot. The exception is quite clear. Powerbuilder doesn't like something in the wsdl file. I have tested the same code (of course different syntax)if it is working in VB .NET 2008 and it did work lioke a charm.
Visual Studio can use the serialization without any problem. Although Powerbuilder tells me that I can use .Net assemblies as the matter of fact it can't handle that. Because we are talking about a simple object with just two strings. I don't even imagine what would have happened if I had more complex objects.
Powerbuilder is the problem. Is there any other way to serialize in Powerbuilder ?

 

[miguelleeuwe]

Sorry Alfa, the only thing that comes to my mind is using a datawindow and do a SaveAs(.... XML!...). and I don´t think that it'll solve your problem.

Why not just use VB .net and create a DLL or ActiveX control that you can call from powerbuilder?

just to give you an idea ...

regards,
Miguel L.

 

[alfa123456]

Ahhhh. Yes. I can do that and already did but there is a small problem. I VB .NET I don't know what type of object I want to serialize every time. I have to built a Choose case with all the list of objects I will use and this is kind of hardcoding and I don't want to do that.
On the other hand in Powerbuilder I know the objects But the problem is that when I pass the object as an argument in my VB COM function (argument System.Object) I get a system.dbnull. Meaning that VS does not recognize my object which is fair enough but it is still a problem. That is why I wanted to do this in Powerbuilder because my app is in PB.
No matter what kind of method I will finally use in VS 2008 I with the same code as I mentioned before I can get my object serialized. But PB 11 I think it has a HUGE BUG and even if it gives you the way to serialize it doesn't support it.
Anyway. I don't think that I will do it without the choose case in VS 2008 because PB says that supports .NET assemblies in theory but .....
Thank you for all your help.