Hi Yigit,
We have checked the reported query “TypeCastException throws while collapsing the GroupHeader item” from our side. Unfortunately we could not reproduce the reported exception at our end. We have checked by collapsing and expanding the GroupHeaders both programmatically(Using button clicked event) and manually(By tapping the GroupHeader). But we haven’t noticed any exceptions as reported.
For your reference we have attached the tested sample and you can download it from the below link.
Can you please explain us the way in which you are collapsing the groups in your application.
Also could you please share the entire stack trace of the exception which helps us to analyze the query better at our end.
If possible could you please modify our sample to replicate the reported issue or provide us a sample which reproduces the reported issue?
Regards,
G.Muthu kumaran.
