ClassDragDropManager
Provides helper methods and fields for initiating drag-and-drop operations, including a method to begin a drag-and-drop operation, and facilities for adding and removing drag-and-drop related event handlers.
Definition
Namespace:Telerik.Windows.DragDrop
Assembly:Telerik.Windows.Controls.dll
Syntax:
public static class DragDropManagerInheritance: objectDragDropManager
Fields
AllowCapturedDragProperty
Identifies the AllowCapturedDrag attached dependency property.
Declaration
public static readonly DependencyProperty AllowCapturedDragPropertyField Value
DependencyProperty
AllowDragProperty
Identifies the AllowDrag attached dependency property.
Declaration
public static readonly DependencyProperty AllowDragPropertyField Value
DependencyProperty
Properties
DefaultDragDropEffects
Gets or sets the AllowedEffect for a drag-and-drop operation if such are not specified in DragInitialize event arguments.
Declaration
public static DragDropEffects DefaultDragDropEffects { get; set; }Property Value
DragDropEffects
IsDragInProgress
Gets a value indicating whether a drag is in progress.
IsFullTrust
Gets whether application have FullTrust permissions.
MinimumHorizontalDragDistance
Gets or sets the width of a rectangle centered on a drag point to allow for limited movement of the mouse pointer before a drag operation begins. The default value is 4.0.
Declaration
public static double MinimumHorizontalDragDistance { get; set; }Property Value
MinimumVerticalDragDistance
Gets or sets the height of a rectangle centered on a drag point to allow for limited movement of the mouse pointer before a drag operation begins.
Declaration
public static double MinimumVerticalDragDistance { get; set; }Property Value
UseAdornerLayer
Gets or sets a value that indicates whether drag visual will be displayed in the adorner layer or in separate window.
Methods
AddDragDropCompletedHandler(DependencyObject, DragDropCompletedEventHandler)
Adds a DragDropCompleted event handler to a specified dependency object.
Declaration
public static void AddDragDropCompletedHandler(DependencyObject element, DragDropCompletedEventHandler handler)Parameters
element
DependencyObject
The dependency object (a UIElement or ContentElement) to which to add the event handler.
handler
A delegate that references the handler method to be added.
Remarks
The DragDropCompleted event occurs when an drag-and-drop operation ends(On Drop or Cancel).
AddDragDropCompletedHandler(DependencyObject, DragDropCompletedEventHandler, bool)
Adds a DragDropCompleted event handler to a specified dependency object.
Declaration
public static void AddDragDropCompletedHandler(DependencyObject element, DragDropCompletedEventHandler handler, bool handledEventsToo)Parameters
element
DependencyObject
The dependency object (a UIElement or ContentElement) to which to add the event handler.
handler
A delegate that references the handler method to be added.
handledEventsToo
True to register the handler such that it is invoked even when the routed event is marked handled in its event data; false to register the handler with the default condition that it will not be invoked if the routed event is already marked handled. The default is false.
Remarks
The DragDropCompleted event occurs when an drag-and-drop operation ends(On Drop or Cancel).
AddDragEnterHandler(DependencyObject, DragEventHandler)
Adds a DragEnter event handler to a specified dependency object.
Declaration
public static void AddDragEnterHandler(DependencyObject element, DragEventHandler handler)Parameters
element
DependencyObject
The dependency object (a UIElement or ContentElement) to which to add the event handler.
handler
A delegate that references the handler method to be added.
Remarks
The DragEnter event occurs when an object is dragged into the element's bounds. This method adds a handler for the bubbling version of the DragEnter event. To add a handler for the tunneling version of this event, see AddPreviewDragEnterHandler.
AddDragEnterHandler(DependencyObject, DragEventHandler, bool)
Adds a DragEnter event handler to a specified dependency object.
Declaration
public static void AddDragEnterHandler(DependencyObject element, DragEventHandler handler, bool handledEventsToo)Parameters
element
DependencyObject
The dependency object (a UIElement or ContentElement) to which to add the event handler.
handler
A delegate that references the handler method to be added.
handledEventsToo
True to register the handler such that it is invoked even when the routed event is marked handled in its event data; false to register the handler with the default condition that it will not be invoked if the routed event is already marked handled. The default is false.
Remarks
The DragEnter event occurs when an object is dragged into the element's bounds. This method adds a handler for the bubbling version of the DragEnter event. To add a handler for the tunneling version of this event, see AddPreviewDragEnterHandler.
AddDragInitializeHandler(DependencyObject, DragInitializeEventHandler)
Adds a DragInitialize event handler to a specified dependency object.
Declaration
public static void AddDragInitializeHandler(DependencyObject element, DragInitializeEventHandler handler)Parameters
element
DependencyObject
The dependency object (a UIElement or ContentElement) to which to add the event handler.
handler
A delegate that references the handler method to be added.
Remarks
The DragInitialize event occurs when an object is about to be dragged. All needed information about the drag should be passed to the event arguments. Drag start can be stopped by setting Cancel=true.
AddDragInitializeHandler(DependencyObject, DragInitializeEventHandler, bool)
Adds a DragInitialize event handler to a specified dependency object.
Declaration
public static void AddDragInitializeHandler(DependencyObject element, DragInitializeEventHandler handler, bool handledEventsToo)Parameters
element
DependencyObject
The dependency object (a UIElement or ContentElement) to which to add the event handler.
handler
A delegate that references the handler method to be added.
handledEventsToo
True to register the handler such that it is invoked even when the routed event is marked handled in its event data; false to register the handler with the default condition that it will not be invoked if the routed event is already marked handled. The default is false.
Remarks
The DragInitialize event occurs when an object is about to be dragged. All needed information about the drag should be passed to the event arguments. Drag start can be stopped by setting Cancel=true.
AddDragLeaveHandler(DependencyObject, DragEventHandler)
Adds a DragLeave event handler to a specified dependency object.
Declaration
public static void AddDragLeaveHandler(DependencyObject element, DragEventHandler handler)Parameters
element
DependencyObject
The dependency object (a UIElement or ContentElement) to which to add the event handler.
handler
A delegate that references the handler method to be added.
Remarks
The DragLeave event occurs when an object is dragged out of the element's bounds. This method adds a handler for the bubbling version of the DragLeave event. To add a handler for the tunneling version of this event, see AddPreviewDragLeaveHandler.
AddDragLeaveHandler(DependencyObject, DragEventHandler, bool)
Adds a DragLeave event handler to a specified dependency object.
Declaration
public static void AddDragLeaveHandler(DependencyObject element, DragEventHandler handler, bool handledEventsToo)Parameters
element
DependencyObject
The dependency object (a UIElement or ContentElement) to which to add the event handler.
handler
A delegate that references the handler method to be added.
handledEventsToo
True to register the handler such that it is invoked even when the routed event is marked handled in its event data; false to register the handler with the default condition that it will not be invoked if the routed event is already marked handled. The default is false.
Remarks
The DragLeave event occurs when an object is dragged out of the element's bounds. This method adds a handler for the bubbling version of the DragLeave event. To add a handler for the tunneling version of this event, see AddPreviewDragLeaveHandler.
AddDragOverHandler(DependencyObject, DragEventHandler)
Adds a DragOver event handler to a specified dependency object.
Declaration
public static void AddDragOverHandler(DependencyObject element, DragEventHandler handler)Parameters
element
DependencyObject
The dependency object (a UIElement or ContentElement) to which to add the event handler.
handler
A delegate that references the handler method to be added.
Remarks
The DragOver event occurs when an object is dragged over the element's bounds. This method adds a handler for the bubbling version of the DragOver event. To add a handler for the tunneling version of this event, see AddPreviewDragOverHandler.
AddDragOverHandler(DependencyObject, DragEventHandler, bool)
Adds a DragOver event handler to a specified dependency object.
Declaration
public static void AddDragOverHandler(DependencyObject element, DragEventHandler handler, bool handledEventsToo)Parameters
element
DependencyObject
The dependency object (a UIElement or ContentElement) to which to add the event handler.
handler
A delegate that references the handler method to be added.
handledEventsToo
True to register the handler such that it is invoked even when the routed event is marked handled in its event data; false to register the handler with the default condition that it will not be invoked if the routed event is already marked handled. The default is false.
Remarks
The DragOver event occurs when an object is dragged over the element's bounds. This method adds a handler for the bubbling version of the DragOver event. To add a handler for the tunneling version of this event, see AddPreviewDragOverHandler.
AddDropHandler(DependencyObject, DragEventHandler)
Adds a Drop event handler to a specified dependency object.
Declaration
public static void AddDropHandler(DependencyObject element, DragEventHandler handler)Parameters
element
DependencyObject
The dependency object (a UIElement or ContentElement) to which to add the event handler.
handler
A delegate that references the handler method to be added.
Remarks
The Drop event occurs when an object is dropped within an element's bounds. This method adds a handler for the bubbling version of the Drop event. To add a handler for the tunneling version of this event, see AddPreviewDropHandler.
AddDropHandler(DependencyObject, DragEventHandler, bool)
Adds a Drop event handler to a specified dependency object.
Declaration
public static void AddDropHandler(DependencyObject element, DragEventHandler handler, bool handledEventsToo)Parameters
element
DependencyObject
The dependency object (a UIElement or ContentElement) to which to add the event handler.
handler
A delegate that references the handler method to be added.
handledEventsToo
True to register the handler such that it is invoked even when the routed event is marked handled in its event data; false to register the handler with the default condition that it will not be invoked if the routed event is already marked handled. The default is false.
Remarks
The Drop event occurs when an object is dropped within an element's bounds. This method adds a handler for the bubbling version of the Drop event. To add a handler for the tunneling version of this event, see AddPreviewDropHandler.
AddGiveFeedbackHandler(DependencyObject, GiveFeedbackEventHandler)
Adds a GiveFeedback event handler to a specified dependency object.
Declaration
public static void AddGiveFeedbackHandler(DependencyObject element, GiveFeedbackEventHandler handler)Parameters
element
DependencyObject
The dependency object (a UIElement or ContentElement) to which to add the event handler.
handler
A delegate that references the handler method to be added.
Remarks
The GiveFeedback event occurs during a drag operation. This method adds a handler for the bubbling version of the GiveFeedback event. To add a handler for the tunneling version of this event, see AddPreviewGiveFeedbackHandler.
AddGiveFeedbackHandler(DependencyObject, GiveFeedbackEventHandler, bool)
Adds a GiveFeedback event handler to a specified dependency object.
Declaration
public static void AddGiveFeedbackHandler(DependencyObject element, GiveFeedbackEventHandler handler, bool handledEventsToo)Parameters
element
DependencyObject
The dependency object (a UIElement or ContentElement) to which to add the event handler.
handler
A delegate that references the handler method to be added.
handledEventsToo
True to register the handler such that it is invoked even when the routed event is marked handled in its event data; false to register the handler with the default condition that it will not be invoked if the routed event is already marked handled. The default is false.
Remarks
The GiveFeedback event occurs during a drag operation. This method adds a handler for the bubbling version of the GiveFeedback event. To add a handler for the tunneling version of this event, see AddPreviewGiveFeedbackHandler.
AddPreviewDragEnterHandler(DependencyObject, DragEventHandler)
Adds a PreviewDragEnter event handler to a specified dependency object.
Declaration
public static void AddPreviewDragEnterHandler(DependencyObject element, DragEventHandler handler)Parameters
element
DependencyObject
The dependency object (a UIElement or ContentElement) to which to add the event handler.
handler
A delegate that references the handler method to be added.
Remarks
The PreviewDragEnter event occurs when an object is dragged into the element's bounds. This method adds a handler for the tunneling version of the PreviewDragEnter event. To add a handler for the bubbling version of this event, see AddDragEnterHandler.
AddPreviewDragEnterHandler(DependencyObject, DragEventHandler, bool)
Adds a PreviewDragEnter event handler to a specified dependency object.
Declaration
public static void AddPreviewDragEnterHandler(DependencyObject element, DragEventHandler handler, bool handledEventsToo)Parameters
element
DependencyObject
The dependency object (a UIElement or ContentElement) to which to add the event handler.
handler
A delegate that references the handler method to be added.
handledEventsToo
True to register the handler such that it is invoked even when the routed event is marked handled in its event data; false to register the handler with the default condition that it will not be invoked if the routed event is already marked handled. The default is false.
Remarks
The PreviewDragEnter event occurs when an object is dragged into the element's bounds. This method adds a handler for the tunneling version of the PreviewDragEnter event. To add a handler for the bubbling version of this event, see AddDragEnterHandler.
AddPreviewDragLeaveHandler(DependencyObject, DragEventHandler)
Adds a PreviewDragLeave event handler to a specified dependency object.
Declaration
public static void AddPreviewDragLeaveHandler(DependencyObject element, DragEventHandler handler)Parameters
element
DependencyObject
The dependency object (a UIElement or ContentElement) to which to add the event handler.
handler
A delegate that references the handler method to be added.
Remarks
The PreviewDragLeave event occurs when an object is dragged out of the element's bounds. This method adds a handler for the tunneling version of the PreviewDragLeave event. To add a handler for the bubbling version of this event, see AddDragLeaveHandler.
AddPreviewDragLeaveHandler(DependencyObject, DragEventHandler, bool)
Adds a PreviewDragLeave event handler to a specified dependency object.
Declaration
public static void AddPreviewDragLeaveHandler(DependencyObject element, DragEventHandler handler, bool handledEventsToo)Parameters
element
DependencyObject
The dependency object (a UIElement or ContentElement) to which to add the event handler.
handler
A delegate that references the handler method to be added.
handledEventsToo
True to register the handler such that it is invoked even when the routed event is marked handled in its event data; false to register the handler with the default condition that it will not be invoked if the routed event is already marked handled. The default is false.
Remarks
The PreviewDragLeave event occurs when an object is dragged out of the element's bounds. This method adds a handler for the tunneling version of the PreviewDragLeave event. To add a handler for the bubbling version of this event, see AddDragLeaveHandler.
AddPreviewDragOverHandler(DependencyObject, DragEventHandler)
Adds a PreviewDragOver event handler to a specified dependency object.
Declaration
public static void AddPreviewDragOverHandler(DependencyObject element, DragEventHandler handler)Parameters
element
DependencyObject
The dependency object (a UIElement or ContentElement) to which to add the event handler.
handler
A delegate that references the handler method to be added.
Remarks
The PreviewDragOver event occurs when an object is dragged over the element's bounds. This method adds a handler for the tunneling version of the PreviewDragOver event. To add a handler for the bubbling version of this event, see AddDragOverHandler.
AddPreviewDragOverHandler(DependencyObject, DragEventHandler, bool)
Adds a PreviewDragOver event handler to a specified dependency object.
Declaration
public static void AddPreviewDragOverHandler(DependencyObject element, DragEventHandler handler, bool handledEventsToo)Parameters
element
DependencyObject
The dependency object (a UIElement or ContentElement) to which to add the event handler.
handler
A delegate that references the handler method to be added.
handledEventsToo
True to register the handler such that it is invoked even when the routed event is marked handled in its event data; false to register the handler with the default condition that it will not be invoked if the routed event is already marked handled. The default is false.
Remarks
The PreviewDragOver event occurs when an object is dragged over the element's bounds. This method adds a handler for the tunneling version of the PreviewDragOver event. To add a handler for the bubbling version of this event, see AddDragOverHandler.
AddPreviewDropHandler(DependencyObject, DragEventHandler)
Adds a PreviewDrop event handler to a specified dependency object.
Declaration
public static void AddPreviewDropHandler(DependencyObject element, DragEventHandler handler)Parameters
element
DependencyObject
The dependency object (a UIElement or ContentElement) to which to add the event handler.
handler
A delegate that references the handler method to be added.
Remarks
The PreviewDrop event occurs when an object is dropped within an element's bounds. This method adds a handler for the tunneling version of the PreviewDrop event. To add a handler for the bubbling version of this event, see AddDropHandler.
AddPreviewDropHandler(DependencyObject, DragEventHandler, bool)
Adds a PreviewDrop event handler to a specified dependency object.
Declaration
public static void AddPreviewDropHandler(DependencyObject element, DragEventHandler handler, bool handledEventsToo)Parameters
element
DependencyObject
The dependency object (a UIElement or ContentElement) to which to add the event handler.
handler
A delegate that references the handler method to be added.
handledEventsToo
True to register the handler such that it is invoked even when the routed event is marked handled in its event data; false to register the handler with the default condition that it will not be invoked if the routed event is already marked handled. The default is false.
Remarks
The PreviewDrop event occurs when an object is dropped within an element's bounds. This method adds a handler for the tunneling version of the PreviewDrop event. To add a handler for the bubbling version of this event, see AddDropHandler.
AddPreviewGiveFeedbackHandler(DependencyObject, GiveFeedbackEventHandler)
Adds a PreviewGiveFeedback event handler to a specified dependency object.
Declaration
public static void AddPreviewGiveFeedbackHandler(DependencyObject element, GiveFeedbackEventHandler handler)Parameters
element
DependencyObject
The dependency object (a UIElement or ContentElement) to which to add the event handler.
handler
A delegate that references the handler method to be added.
Remarks
The PreviewGiveFeedback event occurs during a drag operation. This method adds a handler for the tunneling version of the PreviewGiveFeedback event. To add a handler for the bubbling version of this event, see AddGiveFeedbackHandler.
AddPreviewGiveFeedbackHandler(DependencyObject, GiveFeedbackEventHandler, bool)
Adds a PreviewGiveFeedback event handler to a specified dependency object.
Declaration
public static void AddPreviewGiveFeedbackHandler(DependencyObject element, GiveFeedbackEventHandler handler, bool handledEventsToo)Parameters
element
DependencyObject
The dependency object (a UIElement or ContentElement) to which to add the event handler.
handler
A delegate that references the handler method to be added.
handledEventsToo
True to register the handler such that it is invoked even when the routed event is marked handled in its event data; false to register the handler with the default condition that it will not be invoked if the routed event is already marked handled. The default is false.
Remarks
The PreviewGiveFeedback event occurs during a drag operation. This method adds a handler for the tunneling version of the PreviewGiveFeedback event. To add a handler for the bubbling version of this event, see AddGiveFeedbackHandler.
AddPreviewQueryContinueDragHandler(DependencyObject, QueryContinueDragEventHandler)
Adds a PreviewQueryContinueDrag event handler to a specified dependency object.
Declaration
public static void AddPreviewQueryContinueDragHandler(DependencyObject element, QueryContinueDragEventHandler handler)Parameters
element
DependencyObject
The dependency object (a UIElement or ContentElement) to which to add the event handler.
handler
A delegate that references the handler method to be added.
Remarks
The PreviewQueryContinueDrag event occurs during a drag-and-drop operation, and enables the drag source to determine whether the drag-and-drop operation should be canceled. This method adds a handler for the tunneling version of the PreviewQueryContinueDrag event. To add a handler for the bubbling version of this event, see AddQueryContinueDragHandler.
AddPreviewQueryContinueDragHandler(DependencyObject, QueryContinueDragEventHandler, bool)
Adds a PreviewQueryContinueDrag event handler to a specified dependency object.
Declaration
public static void AddPreviewQueryContinueDragHandler(DependencyObject element, QueryContinueDragEventHandler handler, bool handledEventsToo)Parameters
element
DependencyObject
The dependency object (a UIElement or ContentElement) to which to add the event handler.
handler
A delegate that references the handler method to be added.
handledEventsToo
True to register the handler such that it is invoked even when the routed event is marked handled in its event data; false to register the handler with the default condition that it will not be invoked if the routed event is already marked handled. The default is false.
Remarks
The PreviewQueryContinueDrag event occurs during a drag-and-drop operation, and enables the drag source to determine whether the drag-and-drop operation should be canceled. This method adds a handler for the tunneling version of the PreviewQueryContinueDrag event. To add a handler for the bubbling version of this event, see AddQueryContinueDragHandler.
AddQueryContinueDragHandler(DependencyObject, QueryContinueDragEventHandler)
Adds a QueryContinueDrag event handler to a specified dependency object.
Declaration
public static void AddQueryContinueDragHandler(DependencyObject element, QueryContinueDragEventHandler handler)Parameters
element
DependencyObject
The dependency object (a UIElement or ContentElement) to which to add the event handler.
handler
A delegate that references the handler method to be added.
Remarks
The QueryContinueDrag event occurs during a drag-and-drop operation, and enables the drag source to determine whether the drag-and-drop operation should be canceled. This method adds a handler for the tunneling version of the QueryContinueDrag event. To add a handler for the bubbling version of this event, see AddPreviewQueryContinueDragHandler.
AddQueryContinueDragHandler(DependencyObject, QueryContinueDragEventHandler, bool)
Adds a QueryContinueDrag event handler to a specified dependency object.
Declaration
public static void AddQueryContinueDragHandler(DependencyObject element, QueryContinueDragEventHandler handler, bool handledEventsToo)Parameters
element
DependencyObject
The dependency object (a UIElement or ContentElement) to which to add the event handler.
handler
A delegate that references the handler method to be added.
handledEventsToo
True to register the handler such that it is invoked even when the routed event is marked handled in its event data; false to register the handler with the default condition that it will not be invoked if the routed event is already marked handled. The default is false.
Remarks
The QueryContinueDrag event occurs during a drag-and-drop operation, and enables the drag source to determine whether the drag-and-drop operation should be canceled. This method adds a handler for the tunneling version of the QueryContinueDrag event. To add a handler for the bubbling version of this event, see AddPreviewQueryContinueDragHandler.
DoDragDrop(DependencyObject, object, DragDropEffects, DragDropKeyStates)
Initiates a drag-and-drop operation.
Declaration
public static void DoDragDrop(DependencyObject dragSource, object data, DragDropEffects allowedEffects, DragDropKeyStates initialKeyState)Parameters
dragSource
DependencyObject
A reference to the dependency object that is the source of the data being dragged.
data
A data object that contains the data being dragged.
allowedEffects
DragDropEffects
One of the System.Windows.DragDropEffects values that specifies permitted effects of the drag-and-drop operation.
initialKeyState
DragDropKeyStates
The initial key state when the drag operation begins.
DoDragDrop(DependencyObject, object, DragDropEffects, DragDropKeyStates, object, Point, Point)
Initiates a drag-and-drop operation.
Declaration
public static void DoDragDrop(DependencyObject dragSource, object data, DragDropEffects allowedEffects, DragDropKeyStates initialKeyState, object dragVisual, Point relativeStartPoint, Point dragVisualOffset)Parameters
dragSource
DependencyObject
A reference to the dependency object that is the source of the data being dragged.
data
A data object that contains the data being dragged.
allowedEffects
DragDropEffects
One of the System.Windows.DragDropEffects values that specifies permitted effects of the drag-and-drop operation.
initialKeyState
DragDropKeyStates
The initial key state when the drag operation begins.
dragVisual
The object to show while drag-and-drop operation is in progress.
relativeStartPoint
Point
Cursor offset relative to dragSource element.
dragVisualOffset
Point
DragVisual offset relative to dragSource element.
GetAllowCapturedDrag(DependencyObject)
Gets a value indicating whether this element can raise DragInitialize event and be used as the source of a drag-and-drop operation.
Declaration
public static bool GetAllowCapturedDrag(DependencyObject obj)Parameters
obj
DependencyObject
The object from which the property value is read.
Returns
True if element can start automatic drag-and-drop operation, otherwise False. The default value is False.
GetAllowDrag(DependencyObject)
Gets a value indicating whether this element can raise DragInitialize event and be used as the source of a drag-and-drop operation.
Declaration
public static bool GetAllowDrag(DependencyObject obj)Parameters
obj
DependencyObject
The object from which the property value is read.
Returns
True if element can start automatic drag-and-drop operation, otherwise False. The default value is False.
RemoveDragDropCompletedHandler(DependencyObject, DragDropCompletedEventHandler)
Removes a DragDropCompleted event handler from a specified dependency object.
Declaration
public static void RemoveDragDropCompletedHandler(DependencyObject element, DragDropCompletedEventHandler handler)Parameters
element
DependencyObject
The dependency object (a UIElement or ContentElement) from which to remove the event handler.
handler
A delegate that references the handler method to be removed.
Remarks
The DragDropCompleted event occurs when an drag-and-drop operation ends(On Drop or Cancel).
RemoveDragEnterHandler(DependencyObject, DragEventHandler)
Removes a DragEnter event handler from a specified dependency object.
Declaration
public static void RemoveDragEnterHandler(DependencyObject element, DragEventHandler handler)Parameters
element
DependencyObject
The dependency object (a UIElement or ContentElement) from which to remove the event handler.
handler
A delegate that references the handler method to be removed.
Remarks
The DragEnter event occurs when an object is dragged into the element's bounds. This method removes a handler for the bubbling version of the DragEnter event. To remove a handler for the tunneling version of this event, see RemovePreviewDragEnterHandler.
RemoveDragInitializeHandler(DependencyObject, DragInitializeEventHandler)
Removes a DragInitialize event handler from a specified dependency object.
Declaration
public static void RemoveDragInitializeHandler(DependencyObject element, DragInitializeEventHandler handler)Parameters
element
DependencyObject
The dependency object (a UIElement or ContentElement) from which to remove the event handler.
handler
A delegate that references the handler method to be removed.
Remarks
The DragInitialize event occurs when an object is about to be dragged. All needed information about the drag should be passed to the event arguments. Drag start can be stopped by setting Cancel=true.
RemoveDragLeaveHandler(DependencyObject, DragEventHandler)
Removes a DragLeave event handler from a specified dependency object.
Declaration
public static void RemoveDragLeaveHandler(DependencyObject element, DragEventHandler handler)Parameters
element
DependencyObject
The dependency object (a UIElement or ContentElement) from which to remove the event handler.
handler
A delegate that references the handler method to be removed.
Remarks
The DragLeave event occurs when an object is dragged out of the element's bounds. This method removes a handler for the bubbling version of the DragLeave event. To remove a handler for the tunneling version of this event, see RemovePreviewDragLeaveHandler.
RemoveDragOverHandler(DependencyObject, DragEventHandler)
Removes a DragOver event handler from a specified dependency object.
Declaration
public static void RemoveDragOverHandler(DependencyObject element, DragEventHandler handler)Parameters
element
DependencyObject
The dependency object (a UIElement or ContentElement) from which to remove the event handler.
handler
A delegate that references the handler method to be removed.
Remarks
The DragOver event occurs when an object is dragged over the element's bounds. This method removes a handler for the bubbling version of the DragOver event. To remove a handler for the tunneling version of this event, see RemovePreviewDragOverHandler.
RemoveDropHandler(DependencyObject, DragEventHandler)
Removes a Drop event handler from a specified dependency object.
Declaration
public static void RemoveDropHandler(DependencyObject element, DragEventHandler handler)Parameters
element
DependencyObject
The dependency object (a UIElement or ContentElement) from which to remove the event handler.
handler
A delegate that references the handler method to be removed.
Remarks
The Drop event occurs when an object is dropped within an element's bounds. This method removes a handler for the bubbling version of the Drop event. To remove a handler for the bubbling version of this event, see RemovePreviewDropHandler.
RemoveGiveFeedbackHandler(DependencyObject, GiveFeedbackEventHandler)
Removes a GiveFeedback event handler from a specified dependency object.
Declaration
public static void RemoveGiveFeedbackHandler(DependencyObject element, GiveFeedbackEventHandler handler)Parameters
element
DependencyObject
The dependency object (a UIElement or ContentElement) from which to remove the event handler.
handler
A delegate that references the handler method to be removed.
Remarks
The GiveFeedback event occurs during a drag operation. This method removes a handler for the bubbling version of the GiveFeedback event. To remove a handler for the tunneling version of this event, see RemovePreviewGiveFeedbackHandler.
RemovePreviewDragEnterHandler(DependencyObject, DragEventHandler)
Removes a PreviewDragEnter event handler from a specified dependency object.
Declaration
public static void RemovePreviewDragEnterHandler(DependencyObject element, DragEventHandler handler)Parameters
element
DependencyObject
The dependency object (a UIElement or ContentElement) from which to remove the event handler.
handler
A delegate that references the handler method to be removed.
Remarks
The PreviewDragEnter event occurs when an object is dragged into the element's bounds. This method removes a handler for the tunneling version of the PreviewDragEnter event. To remove a handler for the bubbling version of this event, see RemoveDragEnterHandler.
RemovePreviewDragLeaveHandler(DependencyObject, DragEventHandler)
Removes a PreviewDragLeave event handler from a specified dependency object.
Declaration
public static void RemovePreviewDragLeaveHandler(DependencyObject element, DragEventHandler handler)Parameters
element
DependencyObject
The dependency object (a UIElement or ContentElement) from which to remove the event handler.
handler
A delegate that references the handler method to be removed.
Remarks
The PreviewDragLeave event occurs when an object is dragged out of the element's bounds. This method removes a handler for the tunneling version of the PreviewDragLeave event. To remove a handler for the bubbling version of this event, see RemoveDragLeaveHandler.
RemovePreviewDragOverHandler(DependencyObject, DragEventHandler)
Removes a PreviewDragOver event handler from a specified dependency object.
Declaration
public static void RemovePreviewDragOverHandler(DependencyObject element, DragEventHandler handler)Parameters
element
DependencyObject
The dependency object (a UIElement or ContentElement) from which to remove the event handler.
handler
A delegate that references the handler method to be removed.
Remarks
The PreviewDragOver event occurs when an object is dragged over the element's bounds. This method removes a handler for the tunneling version of the PreviewDragOver event. To remove a handler for the bubbling version of this event, see RemoveDragOverHandler.
RemovePreviewDropHandler(DependencyObject, DragEventHandler)
Removes a PreviewDrop event handler from a specified dependency object.
Declaration
public static void RemovePreviewDropHandler(DependencyObject element, DragEventHandler handler)Parameters
element
DependencyObject
The dependency object (a UIElement or ContentElement) from which to remove the event handler.
handler
A delegate that references the handler method to be removed.
Remarks
The PreviewDrop event occurs when an object is dropped within an element's bounds. This method removes a handler for the tunneling version of the PreviewDrop event. To remove a handler for the bubbling version of this event, see RemoveDropHandler.
RemovePreviewGiveFeedbackHandler(DependencyObject, GiveFeedbackEventHandler)
Removes a PreviewGiveFeedback event handler from a specified dependency object.
Declaration
public static void RemovePreviewGiveFeedbackHandler(DependencyObject element, GiveFeedbackEventHandler handler)Parameters
element
DependencyObject
The dependency object (a UIElement or ContentElement) from which to remove the event handler.
handler
A delegate that references the handler method to be removed.
Remarks
The PreviewGiveFeedback event occurs during a drag operation. This method removes a handler for the tunneling version of the PreviewGiveFeedback event. To remove a handler for the bubbling version of this event, see RemoveGiveFeedbackHandler.
RemovePreviewQueryContinueDragHandler(DependencyObject, QueryContinueDragEventHandler)
Removes a PreviewQueryContinueDrag event handler from a specified dependency object.
Declaration
public static void RemovePreviewQueryContinueDragHandler(DependencyObject element, QueryContinueDragEventHandler handler)Parameters
element
DependencyObject
The dependency object (a UIElement or ContentElement) from which to remove the event handler.
handler
A delegate that references the handler method to be removed.
Remarks
The PreviewQueryContinueDrag event occurs during a drag-and-drop operation, and enables the drag source to determine whether the drag-and-drop operation should be canceled. This method removes a handler for the tunneling version of the PreviewQueryContinueDrag event. To remove a handler for the bubbling version of this event, see RemoveQueryContinueDragHandler.
RemoveQueryContinueDragHandler(DependencyObject, QueryContinueDragEventHandler)
Removes a QueryContinueDrag event handler from a specified dependency object.
Declaration
public static void RemoveQueryContinueDragHandler(DependencyObject element, QueryContinueDragEventHandler handler)Parameters
element
DependencyObject
The dependency object (a UIElement or ContentElement) from which to remove the event handler.
handler
A delegate that references the handler method to be removed.
Remarks
The QueryContinueDrag event occurs during a drag-and-drop operation, and enables the drag source to determine whether the drag-and-drop operation should be canceled. This method removes a handler for the bubbling version of the QueryContinueDrag event. To remove a handler for the tunneling version of this event, see RemovePreviewQueryContinueDragHandler.
SetAllowCapturedDrag(DependencyObject, bool)
Sets a value indicating whether this element can raise DragInitialize event and be used as the source of a drag-and-drop operation. When set the dragged element will steal mouse capture (WPF only).
Declaration
public static void SetAllowCapturedDrag(DependencyObject obj, bool value)Parameters
obj
DependencyObject
The object on which to set the value.
value
Boolean value specifying if this element can automatically raise DragInitialize event and be used as the source of a drag-and-drop operation and steal mouse capture.
SetAllowDrag(DependencyObject, bool)
Sets a value indicating whether this element can raise DragInitialize event and be used as the source of a drag-and-drop operation.
Declaration
public static void SetAllowDrag(DependencyObject obj, bool value)Parameters
obj
DependencyObject
The object on which to set the value.
value
Boolean value specifying if this element can automatically raise DragInitialize event and be used as the source of a drag-and-drop operation.