# Edit Operation

The DataGrid supports different user edit modes through its `UserEditMode` property.

## Inline Editing

When the `UserEditMode` is set to `Inline`, the user can perform the following operations:

1. The user can begin an edit operation over a row by performing a double tap gesture over a cell or by pressing the `F2` key (begins an editing operation over the current row).
2. The user can cancel an edit operation over a row by clicking the `Cancel` button of the editing UI or by pressing the `Esc` key.
3. The user can commit an edit operation over a row by tapping or clicking another cell, by clicking the `Save` button from the editing UI or by pressing the `Enter` key.

**Inline User Edit Mode**

![WinUI EditingUI](https://www.telerik.com/winui/documentation/assets/53ef23f4f5de26aca8cc09e5c78d66aa/grid-edit-modes.png)

## External Editing

The External user edit mode allows you to create a custom external editor through setting the `ExternalEditor` property. `ExternalEditor` expects an implementation of the `IGridExternalEditor` interface that requires the following members:

* Void `BeginEdit`(object `item`, DataGrid `owner`)—Called when the `BeginEdit` command is executed.

* Void `CancelEdit()`—Called when the `CancelEdit` command is executed. Make sure that the `EditCanceled` event handler is called. You can also call it from your editor to cancel the editing.

* Void `CommitEdit()`—Called when the `CommitEdit` command is executed. Make sure that the  `EditCommitted` event handler is called. You can also call it from your editor to commit the changes.

* Event EventHandler `EditCanceled`—Used to notify the grid that the editing has been canceled. Make sure that this event handler is called in the `CancelEdit()` implementation.

* Event EventHandler `EditCommitted`—Used to notify the grid that the changes are ready to be committed. Make sure that this event handler is called in the `CommitEdit()` implementation.

* `Position` (`ExternalEditorPosition`)—Gets or sets the position at which the custom editor will be visualized. The possible values are { `Right`, `Left` }.