Initiates a drag-and-drop operation.
(in PresentationCore.dll)
Visual Basic (Declaration)
Public Shared Function DoDragDrop ( _
dragSource As DependencyObject, _
data As Object, _
allowedEffects As DragDropEffects _
) As DragDropEffects
Dim dragSource As DependencyObject
Dim data As Object
Dim allowedEffects As DragDropEffects
Dim returnValue As DragDropEffects
returnValue = DragDrop.DoDragDrop(dragSource, _
data, allowedEffects)
public static DragDropEffects DoDragDrop(
DependencyObject dragSource,
Object data,
DragDropEffects allowedEffects
)
public:
static DragDropEffects DoDragDrop(
DependencyObject^ dragSource,
Object^ data,
DragDropEffects allowedEffects
)
public static function DoDragDrop(
dragSource : DependencyObject,
data : Object,
allowedEffects : DragDropEffects
) : DragDropEffects
You cannot use methods in XAML.
| Exception | Condition |
|---|
| ArgumentNullException |
dragSource or data is nullNothingnullptra null reference (Nothing in Visual Basic). |
The following example demonstrates how to use the DoDragDrop method.
Private Sub DragStarted()
m_IsDown = False
Dim serializedObject As String = m_OriginalElement.OuterXml
Dim data As DataObject = New DataObject()
data.SetData(m_MyFormat.Name, serializedObject)
Dim effects As DragDropEffects = _
DragDrop.DoDragDrop(MyCanvas, data, DragDropEffects.Copy Or DragDropEffects.Move)
If effects And DragDropEffects.Move Then
' Remove the element.
m_OriginalElement.ParentNode.RemoveChild(m_OriginalElement)
m_OriginalElement = Nothing
End If
End Sub
Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003
The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
.NET Framework
Supported in: 3.5, 3.0
Reference