I have an xtraTreeList with both keyFieldName and ParentFieldName are set
in some cases while dragDrop nodes to each other i got the exception as a messageBox
"Operation is not valid due to the current state if the object"
and for that the parentField not updated!
the exception is vague, any suggestions?
Could you please post a callstack to this error. I am sure, that the exception is not raised by the XtraTreeList but is raised by its DataSource. Anyway, this will give us a starting point in an attempt to find the cause of this problem.