Hi,

i am using a xamDataGrid  and trying to bind it to following  new hierarchical data:

WorkListItem:
  ...
  int DocumentCount 
  List of Documents

Document:
  string Comment
  string DocumentState
 



 to 

the DataSource is bind to List<WorkListitem>

It works but now i want to collapse the children collection (Documents) but it doesnt´t work. I have tried it with another hierarchical data which is more complicated than this one and it works with the same datagrid settings (FieldLayoutSettings etc) . Does it depends on the relation between Document and WorkListItem ? I can´t find out the difference between the hierarchical structures.

Thanks,

Hase

best regards from germany