Thank you for writing.
In this case you should use the CellBeginEdit
event instead of CellEditorInitialized
, because in the second the underlying grid is already initialized and it already has some columns. Detailed information is available in the following article: GridViewMultiComboBoxColumn
Also please note that the column that is used as ValueMember
should exist in the underlying grid even if it is not visible.
Let me know if you have additional questions.
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