TileViewOptionsDragDrop.AllowDrag Property

Gets or sets whether the built-in tile drag-and-drop functionality is enabled.

Namespace : DevExpress.XtraGrid.Views.Tile

Assembly : DevExpress.XtraGrid.v25.2.dll

NuGet Packages : DevExpress.Win.Grid, DevExpress.Win.Navigation

Declaration

C#
VB.NET

csharp

[DefaultValue(false)]
[XtraSerializableProperty]
public virtual bool AllowDrag { get; set; }

<DefaultValue(False)>
<XtraSerializableProperty>
Public Overridable Property AllowDrag As Boolean

Property Value

Type	Default	Description
Boolean	false

true if the built-in tile drag-and-drop functionality is enabled; otherwise, false.

Property Paths

You can access this nested property as listed below:

Object Type	Path to AllowDrag
TileView

.OptionsDragDrop .AllowDrag

Remarks

Use the AllowDrag property to enable the built-in drag-and-drop functionality. Built-in tile drag-and-drop operations are reflected at the data source level. When a tile is dropped at a certain position, the Tile View moves the tile’s underlying data record to a corresponding position in the data source.

Tiles can be combined into groups by specifying the group column (TileViewColumns.GroupColumn). If a tile is moved from one group to another group, the underlying record’s group field ( GroupColumn.FieldName ) is changed accordingly.

When you manually create Kanban Groups (see TileView.OptionsKanban.Groups), you can use the following properties to disable and customize drag-and-drop operations for individual groups.

KanbanGroup.AllowItemDrag - Gets or sets whether to disable tile drag-and-drop operations within and from the current group.
KanbanGroup.DropTargetGroups - The collection of groups that can accept tiles from the current group during drag-and-drop operations.

Handle the following events to manage drag-and-drop operations and implement your own algorithm for moving and modifying underlying data records.

TileView.BeforeItemDrag - Fires when a tile drag operation is about to be started. Allows you to provide a drag image, or to cancel the operation. This event does not fire when you enable drag-and-drop using Drag And Drop Behavior.
TileView.ItemDrag - Fires repeatedly when a user drags a tile. Allows you to prevent a tile from being dropped at a specific position. This event does not fire when you enable drag-and-drop using Drag And Drop Behavior.
TileView.BeforeItemDrop - Fires when a tile drop operation is initiated. This event does not fire when you enable drag-and-drop using Drag And Drop Behavior.
TileView.ItemDrop - Fires after a tile drop operation has been completed. This event does not fire when you enable drag-and-drop using Drag And Drop Behavior.