Hello, Cesar,
RadMultiColumnComboBoxElement, which is used as an editor in
RadGridView's
GridViewMultiComboBoxColumn, offers the
CreatePopupForm method which can be overridden in a derivative. Thus, you can create a custom
RadMultiColumnComboBoxElement and override its
CreatePopupForm method where you can construct your own
MultiColumnComboPopupForm. The custom editor can be applied in the
EditorRequired event that
RadGridView offers:
https://docs.telerik.com/devtools/winforms/controls/gridview/editors/using-custom-editors Another suitable control that can be hosted in a custom editor by using a
RadHostItem is
RadPopupEditor. It allows you to show any predefined or custom controls in its popup. Additional information about
RadPopupEditor is available here:
https://docs.telerik.com/devtools/winforms/controls/editors/popupeditor/popupeditor Feel free to use this approach which suits your requirements best.
I hope this information helps. If you need any further assistance please don't hesitate to contact me.
Regards,
Dess | Tech Support Engineer, Sr.
Progress Telerik
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