Hello David,
Thank you for this question.
The column chooser form is designed to work with
RadGridView control and it is not available when using
RadMultiColumnComboBox. We are not sure whether this is a suitable scenario, please elaborate a bit more and describe the exact situation where you need a column chooser with
RadMultiColumnComboBox. Thank you in advance.
I am looking forward to your reply.
Regards,
Jack
the Telerik team