# CRUD Operations Support

The DataForm supports data operations such as adding, editing, and removing data items.

To provide better understanding on how these operations work, you need to be aware of the way the DataForm source collection is set—the `Source` property accepts `IEnumerable` values and manages them in a different manner depending on the data operation.

## Adding Items

The DataForm provides the `Add` operation, which becomes available only when either of the following conditions is met:

* The collection is an `IList` without a fixed size and with a public default constructor.

* The collection implements an `Add` method and has a public default constructor. The `Add` method requires a single parameter, which is the object you want to add to your collection.

## Removing Items

Similar to the `Add` operation, you can remove items only if wither of the following conditions are met:

* The collection is an `IList` without a fixed size.

* The collection implements a `Remove` method with a single parameter, which is the object that will be removed from the collection.

## Editing Items

If the current item is not null and the DataForm is not in edit mode, the **Edit** button will be enabled and the editing functionality will be available.

If the items of the data source implement the `IEditableObject` or the `INotifyPropertyChanged` interface, you will be able to revert any pending changes with the **Cancel** button. In this case, you have to set the `EnablePropertyChangedBasedCancel` property of the DataForm to `True`.

> caution `EnablePropertyChangedBasedCancel` is not supported when the DataForm utilizes custom data templates.

The DataForm provides options for editing types that do not implement the `IEditableObject` or `INotifyPropertyChanged` interfaces. In such cases, however, the cancel edit feature will not be available and the **Cancel** button will not be enabled.

* For more information on the behavior of the **Save** and **Cancel** buttons, refer to the article on [AutoCommit Settings](https://www.telerik.com/winui/documentation/controls/raddataform/autocommit).
* For detailed explanations on implementing the `IEditableObject`, refer to [this MSDN article](http://msdn.microsoft.com/en-us/library/system.componentmodel.ieditableobject.aspx).

## Automatic Editing

The DataForm exposes the `AutoEdit` property, which indicates whether the component will automatically enter its edit mode when users load or navigate between items. By default, `AutoEdit` is disabled and is set to `False`. To enable the edit mode of the DataForm by default and avoid the need for users to explicitly click the **Edit** button every time they want to edit a record, set `AutoEdit` to `True`.

> caution Setting `AutoEdit` to `True` removes the **Add** button and the user won't be able to add new entries.

## See Also

* [AutoCommit Settings](https://www.telerik.com/winui/documentation/controls/raddataform/autocommit)