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   [Expand]BaseRepositoryItemCheckEdit Class
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   [Collapse]RepositoryItemLookUpEditBase Class
     RepositoryItemLookUpEditBase Members
     RepositoryItemLookUpEditBase Constructor
    [Collapse]RepositoryItemLookUpEditBase Properties
      BestFitMode Property
      CascadingMember Property
      DataSource Property
      DefaultAlignment Property
      DisplayMember Property
      IsFilterLookUp Property
      KeyMember Property
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    [Expand]RepositoryItemLookUpEditBase Events
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   [Expand]RepositoryItemMarqueeProgressBar Class
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   [Expand]RichTextEditHorizontalScrollbarOptions Class
    TimeEditStyle Enumeration
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 End-User Documentation

RepositoryItemLookUpEditBase.DisplayMember Property

Gets or sets the field whose values are displayed in the edit box.

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

Expanded Syntax

Property value

Type: String
The string identifying the field whose values are displayed in the edit box.
The default is String.Empty.

Expanded Remarks

Use the DisplayMember property to specify the field whose values are displayed in the edit box. The value to display is obtained from the currently selected row in the dropdown list.

DisplayMember can represent a field from the data source specified by the DataSource property. In this case, the editor retrieves the value of this field from the data source for the row currently selected and displays it in the edit box.

For LookUpEdit controls, DisplayMember can also specify a field name that does not exist in the data source. Values for such fields should be retrieved manually by handling the RepositoryItemLookUpEdit.GetNotInListValue event.

Note

The ValueMember and DisplayMember properties must refer to columns that contain unique values. If the data source does not contain these columns, you can add an unbound column to a look up editor and populate this column with unique values by handling the LookUpEdit.GetNotInListValue event. This approach is only applicable for LookUpEdit controls.

Note

If the lookup editor's edit value is bound to a field in a data source, this field's type must match the type of the ValueMember field.

Note

The case of the strings assigned to the ValueMember and DisplayMember properties must exactly match the case of the names of the columns in the underlying data source.

Refer to the LookUpEdit topic for more information on setting up the 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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