When RadComboBox is placed inside CellContentTemplate of a TemplateColumn of RadDataGrid and ComboBox's SelectedItem property is bound to a property of the data item,  making a selection in any of the ComboBoxes leads to losing the SelectedItem value. The same can be observed when the window (on UWP) is resized or when the device (Android, iOS) is rotated.

Currently, while searching in the ComboBox all items in the dropdown are displayed and the searched results are highlighted. 
Provide a way to show just the highlighted searched results in the ComboBox. 

I want to update ItemsSource on textchanged event.