Class DragDropTarget<TItemsControlType, TItemContainerType>

A control that enabled drag and drop operations on an ItemsControl.

Inheritance
System.Object
DependencyObject
UIElement
FrameworkElement
Control
ContentControl
DragDropTarget<TItemsControlType, TItemContainerType>
ItemsControlDragDropTarget<TItemsControl, TItemContainerType>
PanelDragDropTarget
Inherited Members
System.Object.Equals(System.Object)
System.Object.Equals(System.Object, System.Object)
System.Object.GetHashCode()
System.Object.GetType()
System.Object.MemberwiseClone()
System.Object.ReferenceEquals(System.Object, System.Object)
System.Object.ToString()
Namespace: System.Windows.Controls
Assembly: OpenSilver.dll
Syntax
public abstract class DragDropTarget<TItemsControlType, TItemContainerType> : ContentControl where TItemsControlType : UIElement where TItemContainerType : UIElement
Type Parameters
Name Description
TItemsControlType

The type of the items control.
TItemContainerType

The type of the item container.

Constructors

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DragDropTarget()

Initializes a new instance of the DragDropTarget class.

Declaration
protected DragDropTarget()

Fields

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AllowedSourceEffectsProperty

Identifies the AllowedSourceEffects dependency property.

Declaration
public static readonly DependencyProperty AllowedSourceEffectsProperty
Field Value
Type Description
DependencyProperty

Properties

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AllowedSourceEffects

Gets or sets the allowed effects when this DragDropTarget is the drag source.

Declaration
[NotImplemented]
public DragDropEffects AllowedSourceEffects { get; set; }
Property Value
Type Description
DragDropEffects

Methods

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AddItem(TItemsControlType, Object)

Adds an item to an items control.

Declaration
protected abstract void AddItem(TItemsControlType control, object data)
Parameters
Type Name Description
TItemsControlType control

The items control.
System.Object data

The data to be inserted.
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ContainerFromIndex(TItemsControlType, Int32)

Retrieves the item container at a given index.

Declaration
protected abstract UIElement ContainerFromIndex(TItemsControlType itemsControl, int index)
Parameters
Type Name Description
TItemsControlType itemsControl

The items control.
System.Int32 index

The index at which to retrieve the container.
Returns
Type Description
UIElement

The item container at a given index.
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IndexFromContainer(TItemsControlType, UIElement)

Retrieves the index of an item container.

Declaration
protected abstract int? IndexFromContainer(TItemsControlType itemsControl, UIElement itemContainer)
Parameters
Type Name Description
TItemsControlType itemsControl

The items control.
UIElement itemContainer

The item container.
Returns
Type Description
System.Nullable<System.Int32>

The index of an item container.
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InsertItem(TItemsControlType, Int32, Object)

Inserts an item into an items control.

Declaration
protected abstract void InsertItem(TItemsControlType itemsControl, int index, object data)
Parameters
Type Name Description
TItemsControlType itemsControl

The items control.
System.Int32 index

The index at which to insert the item.
System.Object data

The data to be inserted.
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INTERNAL_OnAttachedToVisualTree()

Declaration
protected override void INTERNAL_OnAttachedToVisualTree()
Overrides
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INTERNAL_ReturnNewTItemsControl()

Create a new TItemsControlType

Declaration
protected abstract TItemsControlType INTERNAL_ReturnNewTItemsControl()
Returns
Type Description
TItemsControlType

A new TItemsControlType
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OnDragOver(DragEventArgs)

Raises the DragOver event.

Declaration
protected virtual void OnDragOver(DragEventArgs dragOverEventArgs)
Parameters
Type Name Description
DragEventArgs dragOverEventArgs

Information about the event.
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RemoveItem(TItemsControlType, Object)

Removes an item from an items control.

Declaration
protected abstract void RemoveItem(TItemsControlType itemsControl, object data)
Parameters
Type Name Description
TItemsControlType itemsControl

The items control.
System.Object data

The data to be removed.
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RemoveItemAtIndex(TItemsControlType, Int32)

Removes data from an ItemsControl.

Declaration
protected abstract void RemoveItemAtIndex(TItemsControlType itemsControl, int index)
Parameters
Type Name Description
TItemsControlType itemsControl

The items control.
System.Int32 index

The index at which to remove an item.

Events

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DragEnter

Raises the DragEnter event.

Declaration
public event DragEventHandler DragEnter
Event Type
Type Description
DragEventHandler
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DragLeave

Raises the DragLeave event.

Declaration
public event DragEventHandler DragLeave
Event Type
Type Description
DragEventHandler
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DragOver

Raises the DragOver event.

Declaration
public event DragEventHandler DragOver
Event Type
Type Description
DragEventHandler
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Drop

Raises the Drop event

Declaration
public event DragEventHandler Drop
Event Type
Type Description
DragEventHandler
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ItemDragCompleted

Fires when the DragDropTarget control loses mouse capture.

Declaration
public event EventHandler<ItemDragEventArgs> ItemDragCompleted
Event Type
Type Description
System.EventHandler<ItemDragEventArgs>
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ItemDragStarting

An event raised when a drag operation is starting on an item.

Declaration
public event EventHandler<ItemDragEventArgs> ItemDragStarting
Event Type
Type Description
System.EventHandler<ItemDragEventArgs>
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ItemDroppedOnSource

Raises the ItemDroppedOnSource event

Declaration
public event DragEventHandler ItemDroppedOnSource
Event Type
Type Description
DragEventHandler
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ItemDroppedOnTarget

Raises the ItemDroppedOnTarget event

Declaration
[NotImplemented]
public event EventHandler<ItemDragEventArgs> ItemDroppedOnTarget
Event Type
Type Description
System.EventHandler<ItemDragEventArgs>

Extension Methods