IronPython and WPF only string binding

[simplicbe]

Hello,

currently i have a problem with bindings in WPF/IronPython. It seems that only binding string works correctly and random binding errors occures. Here is an article on stackoverflow with the issue: IronPython binding works but throws binding-errors

Another curious thing is, that when opening WPF Windows which uses binding, getter get called much more often as using plane c# code. This makes large WPF user interfaces very slow. If the UI contains some DataGrids, it is not usable any more.

Where can i start debugging this behaviour, or does already a solution exists?

Thank you very much!

[simplicbe]

Starting at MetaPythonObject does not seems to be correct. No other tips for starting to research? But i thought that all python objects are basing on this class, so why does the getter/setter not get called when using WPF binding? Thank you.

[jdhardy]

MetaPythonObject is involved, but debugging IDMOP classes can be a bit tricky. Combining that with WPF bindings and I'm not really sure where to begin either. Wish I could be more help.

[simplicbe]

Maybe i found some thing else, which has to do with this issue. When i attach the debugger to the application, and activate that exceptions are displayed where they are thrown, i get this additional exception, when binding is executed:

IronPython is searching for the __dict__ attribute in a c# base class, which is implemented in all ironpython view models. But it does not found __dict__. The exception it self is catched in ironpython, so the application does no throw any exception.

Or am i totally wrong?

EDIT
Making the attributes accepts and returns available for WPF, may solve this issue.

[simplicbe]

Related to #1232 and will be solved there.