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 End-User Documentation

LookUpEdit.GetNotInListValue Event

Occurs when retrieving values for fields not found in the RepositoryItemLookUpEditBase.DataSource.

Namespace:DevExpress.XtraEditors
Assembly:DevExpress.XtraEditors.v17.2.dll

Expanded Syntax

Expanded Event Data

The event handler receives an argument of type GetNotInListValueEventArgs containing data related to this event.

The following GetNotInListValueEventArgs properties provide information specific to this event.
Property Description
FieldName Gets the field for which you should provide the value for the specified record.
RecordIndex Gets the zero-based index of the record for which a field value must be returned.
Value Gets or sets a field value.

Expanded Remarks

Lookup editors are capable of displaying unbound columns in the dropdown window, i.e. columns which are not bound to any field from the RepositoryItemLookUpEditBase.DataSource. Cell values for such columns are retrieved via the GetNotInListValue event.This event is also fired when RepositoryItemLookUpEditBase.DisplayMember or RepositoryItemLookUpEditBase.ValueMember properties refer to fields that are not found in the data source.

The editor's GetNotInListValue event is equivalent to the RepositoryItemLookUpEdit.GetNotInListValue event available via the Properties object, i.e. adding/removing an event handler for the current event actually affects the RepositoryItemLookUpEdit.GetNotInListValue event.

Refer to the RepositoryItemLookUpEdit.GetNotInListValue topic for more information.

Expanded Example

The code below shows how to make a lookup editor display data from a custom array. The editor contains two columns. One column is bound to a field from the data source. The other column is unbound and is populated via the RepositoryItemLookUpEdit.GetNotInListValue event.

The data source of a lookup editor represents an array of Record class objects. The Record class declares the public Country property whose values are displayed in the column of the same name. The lookup editor also contains an ID column. Its field name ("ID") does not coincide with any fields from the data source. So this column is unbound and is populated via the RepositoryItemLookUpEdit.GetNotInListValue event. In the event handler, we return the record id as a value for the column.

The following image shows the lookup editor after running this code:

Expanded See Also

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