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  [Collapse]DevExpress.XtraEditors.Repository
   [Expand]BaseRepositoryItemCheckEdit Class
    CalendarSelectionMode Enumeration
    CalendarView Enumeration
   [Expand]EditorsRepositoryBase Class
    ExportMode Enumeration
    GridLookUpViewType Enumeration
   [Expand]PersistentRepository Class
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   [Expand]RepositoryItemHyperLinkEdit Class
   [Expand]RepositoryItemImageComboBox Class
   [Expand]RepositoryItemImageEdit Class
   [Expand]RepositoryItemLookUpEdit Class
   [Collapse]RepositoryItemLookUpEditBase Class
     RepositoryItemLookUpEditBase Members
     RepositoryItemLookUpEditBase Constructor
    [Collapse]RepositoryItemLookUpEditBase Properties
      BestFitMode Property
      CascadingMember Property
      DataSource Property
      DefaultAlignment Property
      DisplayMember Property
      IsFilterLookUp Property
      KeyMember Property
      PopupSizeable Property
      ShowFooter Property
      TextEditStyle Property
      UseCtrlScroll Property
      ValueMember Property
    [Expand]RepositoryItemLookUpEditBase Events
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   [Expand]RepositoryItemMarqueeProgressBar Class
   [Expand]RepositoryItemMemoEdit Class
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   [Expand]RepositoryItemMRUEdit Class
   [Expand]RepositoryItemPageNumberEdit Class
   [Expand]RepositoryItemPickImage Class
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   [Expand]RepositoryItemPopupContainerEdit Class
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   [Expand]RepositoryItemProgressBar Class
   [Expand]RepositoryItemRadioGroup Class
   [Expand]RepositoryItemRangeTrackBar Class
   [Expand]RepositoryItemRatingControl Class
   [Expand]RepositoryItemRichTextEdit Class
   [Expand]RepositoryItemSearchControl Class
   [Expand]RepositoryItemSearchLookUpEdit Class
   [Expand]RepositoryItemSparklineEdit Class
   [Expand]RepositoryItemSpinEdit Class
   [Expand]RepositoryItemTextEdit Class
   [Expand]RepositoryItemTimeEdit Class
   [Expand]RepositoryItemTimeSpanEdit Class
   [Expand]RepositoryItemToggleSwitch Class
   [Expand]RepositoryItemTokenEdit Class
   [Expand]RepositoryItemTrackBar Class
   [Expand]RepositoryItemTreeListLookUpEdit Class
   [Expand]RepositoryItemZoomTrackBar Class
   [Expand]RichTextEditBehaviorOptions Class
   [Expand]RichTextEditHorizontalScrollbarOptions Class
    TimeEditStyle Enumeration
   [Expand]TrackBarRange Structure
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 End-User Documentation

RepositoryItemLookUpEditBase.DataSource Property

Gets or sets the source of data displayed in the dropdown window.

Namespace:DevExpress.XtraEditors.Repository
Assembly:DevExpress.XtraEditors.v17.1.dll

Expanded Syntax

Property value

Type: Object
The source of data displayed in the dropdown.
The default is null.

Expanded Remarks

Use the DataSource property to specify the source of rows to display in the dropdown. The data source can represent any object that implements the System.Collections.IList or System.ComponentModel.IListSource interfaces. Thus you can bind a lookup editor to an array or a collection of class objects, System.Data.DataView, System.Data.DataTable objects, etc.

A lookup editor allows you to use unbound columns - columns that display custom data that does not exist in the data source. To populate unbound columns in a LookUpEdit control, use the LookUpEdit.GetNotInListValue (or RepositoryItemLookUpEdit.GetNotInListValue) event. For information on how to implement unbound columns in a View that is embedded into the GridLookUpEdit control, see the Unbound Columns topic.

Refer to the LookUpEdit topic for information on customizing a lookup editor.

Expanded Example

Show Me

A complete sample project is available in the DevExpress Code Examples database at http://www.devexpress.com/example=T378801.

This example shows how to use an in-place LookUpEdit control (RepositoryItemLookUpEdit) for editing cells in a grid column.

The lookup editor in the example is used to edit the CategoryID field values from the Products list. However, instead of displaying category IDs, the editor will display corresponding category names in the edit box.

The main properties used to set up the LookUpEdit control are:
- DataSource - Specifies the lookup data source.
- ValueMember - Specifies the field from the lookup data source whose values match the editor's edit value.
- DisplayMember - Identifies the field from the lookup data source whose values match the editor's display text.

The following image shows the result.

Expanded See Also

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