How to restrict drag and drop for particular nodes in Syncfusion Blazor TreeView component?

The drag and drop action in Blazor TreeView component can be prevented to particular node by using OnNodeDragStop event by setting args.Cancel property as true.

@using Syncfusion.Blazor.Navigations

<SfTreeView TValue="TreeData" AllowDragAndDrop="true">
    <TreeViewEvents TValue="TreeData" OnNodeDragStop="OnNodeDragStop"></TreeViewEvents>
    <TreeViewFieldsSettings DataSource="@TreeDataSource" Id="Id" ParentID="Pid" Text="Name" HasChildren="HasChild"              Expanded="Expanded"></TreeViewFieldsSettings>
</SfTreeView>
       
@code{
   List<TreeData> TreeDataSource = new List<TreeData>();
   
   public void OnNodeDragStop(DragAndDropEventArgs args)
   {
       if (args.DraggedNodeData.Id == "1")
       {
           args.Cancel = true;
       }
   }

   protected override void OnInitialized()
   {
       base.OnInitialized();
       GetTreeData();
   }

   private void GetTreeData(){
       TreeDataSource.Add(new TreeData
       {
           Id = "1",
           Name = "Discover Music",
           HasChild = true,
           Expanded = true
       });
       TreeDataSource.Add(new TreeData
       {
           Id = "2",
           Pid = "1",
           Name = "Hot Singles",
       });
       ...
       ...
    }
  }

Sample: https://blazorplayground.syncfusion.com/BNhfZAZlpPJuzWrr

Conclusion
I hope you enjoyed learning about how to restrict drag and drop for particular nodes in Syncfusion Blazor TreeView component.

You can refer to our Blazor TreeView feature tour page to know about its other groundbreaking feature representations and documentation, and how to quickly get started for configuration specifications. You can also explore our Blazor TreeView example to understand how to create and manipulate data.

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