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TreeView - Drag & Drop
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Description
Telerik UI for Blazor TreeView displays data in a tree-like structure. One of the main functionalities it gives is drag and drop. It allows you to move a node or multiple nodes between different parents in the same Treeview or between different component instances.
To enable the drag and drop functionality, set the Draggable
parameter to true
. Then, use the DragStart, OnDrag, OnDragEnd, OnDrop
events to handle the drag and drop operations and modify the data source as per the application business logic.
The DragStart
event fires when the user starts dragging a node. It provides details for the dragged items and allows you to cancel the event.
The OnDrag
event fires continuously while the user is dragging a node.
The DragEnd
event fires fires when a drag operation is ended by releasing the mouse button.
The OnDrop
event fires when dropping a node into a new location. That allows you to manipulate the data collection based on where the user dropped the element.
Note that - the OnDrop
event fires for the TreeView where the item originally was if you drag and drop items from one instance of the TreeView to another.