DragDropBehavior Class

Represents the Drag-and-Drop Behavior that can be attached to a data control to allow users to move/reorder data elements with the mouse.

Namespace: DevExpress.Utils.DragDrop

Assembly: DevExpress.Utils.v23.2.dll

NuGet Packages: DevExpress.Utils, DevExpress.Wpf.Core

Declaration

C#

public sealed class DragDropBehavior :
    DragDropBehaviorBase<IDragDropBehaviorSource, DragDropBehaviorProperties>

VB.NET

Public NotInheritable Class DragDropBehavior
    Inherits DragDropBehaviorBase(Of IDragDropBehaviorSource, DragDropBehaviorProperties)

Remarks

Use the BehaviorManager.Attach method to assign the behavior to a control in code or the BehaviorManager.Detach method to remove it. The code below shows how to assign the behavior to two grids, specify options, and add event handlers.

C#

using DevExpress.Utils.Behaviors;
using DevExpress.Utils.DragDrop;

BehaviorManager behaviorManager1 = new BehaviorManager(this.components);

//To assign the Behavior to a control in code, use the Attach method.
behaviorManager1.Attach<DragDropBehavior>(gridView1, behavior => {
    behavior.Properties.AllowDrop = true;
    behavior.Properties.InsertIndicatorVisible = true;
    behavior.Properties.PreviewVisible = true;
    behavior.DragDrop += Behavior_DragDropToGrid1;
});

behaviorManager1.Attach<DragDropBehavior>(gridView2, behavior => {
    behavior.Properties.AllowDrop = false;
    behavior.Properties.InsertIndicatorVisible = false;
    behavior.Properties.PreviewVisible = false;
    behavior.DragDrop += Behavior_DragDropToGrid2;
});

//To remove the Behavior, use the Detach method.
behaviorManager1.Detach<DragDropBehavior>(gridView1);
behaviorManager1.Detach<DragDropBehavior>(gridView2);

VB.NET

Imports DevExpress.Utils.Behaviors
Imports DevExpress.Utils.DragDrop

Dim behaviorManager1 As New BehaviorManager(Me.components)

'To assign the Behavior to a control in code, use the Attach method.
behaviorManager1.Attach(Of DragDropBehavior)(gridView1, Sub(behavior)
    behavior.Properties.AllowDrop = True
    behavior.Properties.InsertIndicatorVisible = True
    behavior.Properties.PreviewVisible = True
    AddHandler behavior.DragDrop, AddressOf Behavior_DragDropToGrid1
End Sub)

behaviorManager1.Attach(Of DragDropBehavior)(gridView2, Sub(behavior)
    behavior.Properties.AllowDrop = False
    behavior.Properties.InsertIndicatorVisible = False
    behavior.Properties.PreviewVisible = False
    AddHandler behavior.DragDrop, AddressOf Behavior_DragDropToGrid2
End Sub)

'To remove the Behavior, use the Detach method.
behaviorManager1.Detach(Of DragDropBehavior)(gridView1)
behaviorManager1.Detach(Of DragDropBehavior)(gridView2)

Inheritance

Object

DevExpress.Utils.MVVM.BehaviorBase

DevExpress.Utils.Behaviors.Behavior

DevExpress.Utils.Behaviors.Behavior<DevExpress.Utils.DragDrop.IDragDropBehaviorSource>

DevExpress.Utils.Behaviors.BehaviorWithEvents<DevExpress.Utils.DragDrop.IDragDropBehaviorSource>

DragDropBehaviorBase<DevExpress.Utils.DragDrop.IDragDropBehaviorSource, DragDropBehaviorProperties>

DragDropBehavior