I have a DevExpress Grid and LookupEdit bound to a BBS/BO. A Grid column is bound to the same field as the standalone LookupEdit. If a broken rule is raised for the field, the ErrorProvider icon/message appears on the grid's column, but not on the standalone LookupEdit. How can I get the error msg/icon to appear in both places?



P.S. Everything works OK if I use an SF-inherited comboBox instead of the LookupEdit.

The difference is the support of IBindingList. If you are using native SF data binding, then it would work. If you are binding via a BBS then it would not. You can always add an error provider to the dialog and set it manually in a worst case scenario by handling the BusinessRulesChecked event of the BO.