Class ItemsControlDragDropTarget<TItemsControl, TItemContainerType>

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

Inheritance
System.Object
DependencyObject
UIElement
FrameworkElement
Control
ContentControl
DragDropTarget<TItemsControl, TItemContainerType>
ItemsControlDragDropTarget<TItemsControl, TItemContainerType>
ListBoxDragDropTarget
TreeViewDragDropTarget
Implements
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.Controls.Toolkit.dll
Syntax
public abstract class ItemsControlDragDropTarget<TItemsControl, TItemContainerType> : DragDropTarget<TItemsControl, TItemContainerType>, IControl, IFrameworkElement, IUIElement, IDependencyObject, IAcceptDrop where TItemsControl : ItemsControl where TItemContainerType : FrameworkElement
Type Parameters
Name Description
TItemsControl

The type of the control that contains the items that can be dragged.
TItemContainerType

The type of the item container.

Fields

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ScrollItemAnimationDurationProperty

Identifies the ScrollItemIntoViewAnimationDuration dependency property.

Declaration
public static readonly DependencyProperty ScrollItemAnimationDurationProperty
Field Value
Type Description
DependencyProperty

Properties

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ScrollItemAnimationDuration

Gets or sets the duration to use to animate an item into view.

Declaration
public Duration ScrollItemAnimationDuration { get; set; }
Property Value
Type Description
Duration

Methods

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AddItem(TItemsControl, Object)

Adds an item to an items control.

Declaration
protected override void AddItem(TItemsControl itemsControl, object data)
Parameters
Type Name Description
TItemsControl itemsControl

The items control.
System.Object data

The data to be inserted.
Overrides
System.Windows.Controls.DragDropTarget<TItemsControl, TItemContainerType>.AddItem(TItemsControl, System.Object)
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CanAddItem(TItemsControl, Object)

Returns a value indicating whether an item can be added to the items control.

Declaration
protected override bool CanAddItem(TItemsControl itemsControl, object data)
Parameters
Type Name Description
TItemsControl itemsControl

The items control.
System.Object data

The data to be added.
Returns
Type Description
System.Boolean

A value indicating whether an item can be added to the items control.
Overrides
System.Windows.Controls.DragDropTarget<TItemsControl, TItemContainerType>.CanAddItem(TItemsControl, System.Object)
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CanRemove(TItemsControl)

Returns a value indicating whether an item can be removed from the items control.

Declaration
protected override bool CanRemove(TItemsControl itemsControl)
Parameters
Type Name Description
TItemsControl itemsControl

The items control.
Returns
Type Description
System.Boolean

A value indicating whether an item can be removed from the items control.
Overrides
System.Windows.Controls.DragDropTarget<TItemsControl, TItemContainerType>.CanRemove(TItemsControl)
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CanScroll(TItemsControl)

Returns a value indicating whether a given items control can scroll.

Declaration
protected override bool CanScroll(TItemsControl itemsControl)
Parameters
Type Name Description
TItemsControl itemsControl

The items control.
Returns
Type Description
System.Boolean

The value indicating whether the given items control can scroll.
Overrides
System.Windows.Controls.DragDropTarget<TItemsControl, TItemContainerType>.CanScroll(TItemsControl)
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ContainerFromIndex(TItemsControl, Int32)

Retrieves the item container at a given index.

Declaration
protected override TItemContainerType ContainerFromIndex(TItemsControl itemsControl, int index)
Parameters
Type Name Description
TItemsControl itemsControl

The items control.
System.Int32 index

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

The item container at a given index.
Overrides
System.Windows.Controls.DragDropTarget<TItemsControl, TItemContainerType>.ContainerFromIndex(TItemsControl, System.Int32)
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GetItemCount(TItemsControl)

Retrieves the number of items in an items control.

Declaration
protected override int GetItemCount(TItemsControl itemsControl)
Parameters
Type Name Description
TItemsControl itemsControl

The items control.
Returns
Type Description
System.Int32

The number of items in the items control.
Overrides
System.Windows.Controls.DragDropTarget<TItemsControl, TItemContainerType>.GetItemCount(TItemsControl)
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GetItemsHost(TItemsControl)

Retrieves the items host for a given items control.

Declaration
protected override Panel GetItemsHost(TItemsControl itemsControl)
Parameters
Type Name Description
TItemsControl itemsControl

The items control.
Returns
Type Description
Panel

The items host for a given items control.
Overrides
System.Windows.Controls.DragDropTarget<TItemsControl, TItemContainerType>.GetItemsHost(TItemsControl)
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IndexFromContainer(TItemsControl, TItemContainerType)

Retrieves the index of an item container.

Declaration
protected override int? IndexFromContainer(TItemsControl itemsControl, TItemContainerType itemContainer)
Parameters
Type Name Description
TItemsControl itemsControl

The items control.
TItemContainerType itemContainer

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

The index of an item container.
Overrides
System.Windows.Controls.DragDropTarget<TItemsControl, TItemContainerType>.IndexFromContainer(TItemsControl, TItemContainerType)
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InsertItem(TItemsControl, Int32, Object)

Inserts an item into an items control.

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

The items control.
System.Int32 index

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

The data to be inserted.
Overrides
System.Windows.Controls.DragDropTarget<TItemsControl, TItemContainerType>.InsertItem(TItemsControl, System.Int32, System.Object)
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IsItemContainerOfItemsControl(TItemsControl, DependencyObject)

Returns a value indicating whether a container belongs to an items control.

Declaration
protected override bool IsItemContainerOfItemsControl(TItemsControl itemsControl, DependencyObject itemContainer)
Parameters
Type Name Description
TItemsControl itemsControl

The items control.
DependencyObject itemContainer

The item container.
Returns
Type Description
System.Boolean

A value indicating whether a container belongs to an items control.
Overrides
System.Windows.Controls.DragDropTarget<TItemsControl, TItemContainerType>.IsItemContainerOfItemsControl(TItemsControl, System.Windows.DependencyObject)
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ItemFromContainer(TItemsControl, TItemContainerType)

Gets the item from an item container.

Declaration
protected override object ItemFromContainer(TItemsControl itemsControl, TItemContainerType itemContainer)
Parameters
Type Name Description
TItemsControl itemsControl

The items control.
TItemContainerType itemContainer

The item container.
Returns
Type Description
System.Object

The data contained by the item container.
Overrides
System.Windows.Controls.DragDropTarget<TItemsControl, TItemContainerType>.ItemFromContainer(TItemsControl, TItemContainerType)
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RemoveItem(TItemsControl, Object)

Removes an item from an items control.

Declaration
protected override void RemoveItem(TItemsControl itemsControl, object data)
Parameters
Type Name Description
TItemsControl itemsControl

The items control.
System.Object data

The data to be removed.
Overrides
System.Windows.Controls.DragDropTarget<TItemsControl, TItemContainerType>.RemoveItem(TItemsControl, System.Object)
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RemoveItemAtIndex(TItemsControl, Int32)

Removes an item from an items control by index.

Declaration
protected override void RemoveItemAtIndex(TItemsControl itemsControl, int index)
Parameters
Type Name Description
TItemsControl itemsControl

The items control.
System.Int32 index

The index of the item to be removed.
Overrides
System.Windows.Controls.DragDropTarget<TItemsControl, TItemContainerType>.RemoveItemAtIndex(TItemsControl, System.Int32)
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ScrollIntoView(TItemsControl, TItemContainerType)

Scrolls a given item container into the view.

Declaration
protected override void ScrollIntoView(TItemsControl itemsControl, TItemContainerType itemContainer)
Parameters
Type Name Description
TItemsControl itemsControl

The items control that contains the item container.
TItemContainerType itemContainer

The item container to scroll into view.
Overrides
System.Windows.Controls.DragDropTarget<TItemsControl, TItemContainerType>.ScrollIntoView(TItemsControl, TItemContainerType)

Implements

Extension Methods