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 End-User Documentation

GridView.CustomRowCellEdit Event

Enables you to assign editors to individual cells.

Namespace:DevExpress.XtraGrid.Views.Grid
Assembly:DevExpress.XtraGrid.v17.1.dll

Expanded Syntax

Expanded Event Data

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

The following CustomRowCellEditEventArgs properties provide information specific to this event.
Property Description
CellValue Returns the currently processed cell value.
Column Gets the column to which the currently processed cell corresponds.
RepositoryItem Gets or sets the editor used to edit the currently processed cell.
RowHandle Gets the handle of the row that contains the processed cell.

Expanded Remarks

The CustomRowCellEdit event fires for each cell within the View. The referenced cell is identified by the event's CustomRowCellEventArgs.Column and CustomRowCellEventArgs.RowHandle parameters. If you need to change the cell's editor, assign a specific RepositoryItem descendant to the CustomRowCellEditEventArgs.RepositoryItem property.

The image below shows a View where editors are assigned to cells via the CustomRowCellEdit event, depending on the rows where the cells reside. This makes the View appear rotated 90 degrees (rows serve as columns).

By default, the editor assigned to a cell via the GridColumn.ColumnEdit property or the CustomRowCellEdit event will also be used for editing the cell's contents. If you want to use a different editor for in-place editing, handle the CustomRowCellEditForEditing event.

To replace default editors within the Edit Form with custom ones, handle the CustomRowCellEditForEditing event. The CustomRowCellEdit event cannot be used for this purpose.

Note

If you handle the CustomRowCellEdit event to supply an editor for a specific row depending on it's focused state, this editor will not be used for editing. In this instance, to use a specific editor for editing, you should handle the CustomRowCellEditForEditing event.

Note

Due to the Grid Control's infrastructure, the CustomRowCellEdit event fires frequently - each time a cell is refreshed. Therefore, do not update the grid's visual elements (cell values, layout, etc.) or implement complex logic for your CustomRowCellEdit event handler. Otherwise, your application performance might be severely affected.

Note

Do not change properties of existing RepositoryItems (including the e.RepositoryItem object) in your CustomRowCellEdit event handler. The CustomRowCellEdit event must be used only for providing a specific RepositoryItem based on the processed row and column, but not for changing properties of existing items. The correct approach is to create RepositoryItem objects and customize them beforehand, and then handle the CustomRowCellEdit event to assign these RepositoryItem objects to the event's e.RepositoryItem parameter, based on your logic.

For more information about assigning editors to individual cells, see the Assigning Editors to Individual Cells topic.

Expanded Example

The following example shows how to handle the CustomRowCellEdit event to assign ComboBoxEdit, SpinEdit and CheckEdit editors to cells, depending on the FieldName column value. It is assumed that the repository items corresponding to these editors are already in a repository.

The screenshots below show the grid's appearance before and after executing the code. The ColumnView.ShowButtonMode property is set to ShowButtonModeEnum.ShowAlways for demonstration purposes.

Expanded See Also

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