Wpf combobox not updating when source updates

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Default is, obviously, the default value of the Update Source Trigger.The other options are Property Changed, Lost Focus and Explicit.We can demonstrate this by binding a Label to the selector item (actor).Notice that the selected item changes as we enter text.

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In this example, we can now type the actor’s last name in order to change the selected item.As an example: The snipped below commits all bound .In the previous article we saw how changes in a Text Box was not immediately sent back to the source.It defaults to the value "Default", which basically means that the source is updated based on the property that you bind to.As of writing, all properties except for the Text property, is updated as soon as the property changes (Property Changed), while the Text property is updated when focus on the destination element is lost (Lost Focus).The combo Box Dropdown just updates the first time it is opened and doesn't update after that.

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