I’m getting a NullReferenceException from SetTitleBarContentBinding when adding items via Items.Add() (works fine when using ItemsSource). The problem seems to be that SetTitleBarContentBinding assumes that ItemsSourceFieldDescriptors is valid which it isn’t when adding items via the Items collection.
Setting DisplayMemberBinding on the MainColumn defers the problem to DataCell.SetupDisplayMemberBinding. The workaround is to set DisplayMemberBinding on all columns.
Imported from legacy forums. Posted by Michael (had 3451 views)