Check Multiple Nodes in TreeView
The TreeView lets the user select multiple nodes with checkboxes based on the value of its CheckBoxMode parameter.
In this article:
Basics
To let the user use multiple node selection, set the CheckBoxMode parameter to Telerik.Blazor.TreeViewCheckBoxMode.Multiple.
Examples
This section contains the following examples:
Multiple selection using one-way data binding
You can use one-way binding to provide an initial node selection, and respond to the CheckedItemsChanged event to update the view-model when user selection occurs. If you don't update the model, selection is effectively canceled.
Multiple selection using two-way data binding
You can use two-way binding to get the node the user has selected. This can be useful if the node model already contains all the information you need to show based on the selection. It also reduces the amount of code you need to write.
Handle multiple selection from different data models
You can bind the treeview to different models at each level, and the selection accommodates that. You need to make sure that you cast the node to the correct type.