Hi Karmen,
Thank you for contacting Syncfusion support.
Query 1: Editing and bindings works, but when editing for specific cell is finished, binding is set to null (I assume because SfTextBoxExt control gets destroyed). How can I fix this?
We have checked your previously updated sample and found that you had using “OnSelectionChanged” event. This event raises only when the items in AutoComplete is selected. So we request you use “TextChanged” event to update the binding while editing. Also if you need to update the changes in lost focus, you can update in LostFocus event. We have prepared sample for your reference and it can be downloaded from the below location.
Query 2: The second problem I'm experiencing is that if I have two different objects with the same property that is used for searching, the first object is always chosen (even if I selected the other one with a mouse click or keyboard enter from the dropdown menu). There are two "Jack Longtoes" names in the dropdown but with different email (sample app below). No matter which name I choose from the dropdown, the first one is always selected (current item is displayed in the bottom red box as a debug view).
We have checked your sample, in this to update the selection in SfTextBox, we request you to include “UpdateSourceTrigger”. We have included this changes in below sample and it can be downloaded from the below location.
Please let us know whether it is helpful.
Regards,
Keerthana J.