Hi Matt,
Thank you for writing.
The column chooser is being dynamically created when opened,
hence your settings are getting applied just the first time - because radGridView1.ColumnChooser will give you just the initial instance, and you are not subscribed to the Shown event of following instances.
For the
purpose we have a ColumnChooserCreated event, which gets fired when a new instance of the chooser is being created. In it, you can subscribe to the Shown event and use your handler:
I hope that you find this information useful. Should you have any other questions, do not hesitate to contact us.
Regards,
Stefan
Telerik
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