Forcibly nullifies the internal data adapter. Call this method before you dynamically provide a data source for the current repository item within a ShownEditor event handler.
NuGet Package: DevExpress.Win.Navigation
This method is relevant when CheckedComboBoxEdit objects that correspond to the current RepositoryItemCheckedComboBoxEdit are used in the in-place mode and data sources for them are dynamically provided via ShownEditor event handlers.
In the in-place mode, if you handle the ShownEditor event of the container control to provide a custom data source for the CheckedComboBoxEdit editor, call the ClearDataAdapter method before you assign a data source to the RepositoryItemCheckedComboBoxEdit.DataSource property. This method forcibly sets the internal data adapter that is intended to manage data within the CheckedComboBoxEdit to null.
See this article to learn more about repository items.