I am afraid that this is not possible, the RadBindingNavigator should be bound to a BindingSource, and when the grid is manually populated, there is nothing that can be bound to the BindingSource. The BindingSource must be bound to a data source that supports a currency manager.
The only solution I can think of without using a DataSource for the grid is creating a custom navigation control and setting the current row/column
in the grid manually. The RadBindingNavigator is a CommandBar control: CommandBar Telerik UI for WinForms
I hope this helps. Should you have any other questions, do not hesitate to ask.
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