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Overview

Blazor TreeView is a graphical user interface component that allows you to represent hierarchical data in a tree structure. It has great performance combined with advanced features like load on demand, check box support, multiple selection, tree navigation, drag and drop, tree node editing, and template support.


Blazor TreeView data binding from different data sources.

Data binding

You can bind data to the Blazor TreeView component from any valid data source, such as XML, JSON, and JSONP. The tree data can be local or in any remote service and fetched using different kinds of adaptors like OData, OData V4, URL, JSON, and Web API.


Load on demand

The Blazor TreeView component has a load-on-demand option that allows you to load huge amounts of data by dynamically loading the data on demand, which improves the component’s performance.

Also, child nodes in the component can be loaded from any web service or inserted dynamically.


Tree node with icons

Display nodes with labels and icons to present content in a more readable format. This is helpful in making a typical directory tree and file system.


Check box support

The Blazor TreeView provides built-in support for check boxes, allowing users to select more than one item.

The Blazor tree view check boxes also have a tri-state mode, which is applicable only for parent nodes. In this mode, the parent node will go into the indeterminate state when the child nodes are partially checked.


Drag and drop

Blazor TreeView component drag and drop inside a tree.

Inside the tree

Tree nodes can be dragged and dropped from one parent node to another within the same level or different levels.

Blazor TreeView component drag and drop between trees.

Outside the tree

Extending the drop behavior allows users to drop tree nodes from one tree view to another tree view.

Blazor TreeView component dragging and dropping to external container.

To an external container

Drop tree nodes to any external container or component by extending the tree view node drop action.


Multiple node selection

The Blazor TreeView allows users to select multiple nodes. When the drag-and-drop feature is enabled, all the selected nodes can be dragged at the same time.

Blazor TreeView multiple node selection.

Blazor TreeView multiple node drag and drop.


Editable nodes

Edit the tree nodes’ label text on the client side by double-clicking it. While editing Blazor tree view nodes, the tree view data source will also be updated by the modified data.


Sorting tree nodes

Render the Blazor TreeView nodes in ascending or descending order based on the label text to provide users improved readability.


Node template

The Blazor TreeView component can be customized through its node template support, which allows defining a custom structure for tree nodes. You can use node templates specifically for parent nodes, child nodes, or both, and can include images and any custom element structure.


Expand collapse icons

Easily customize the expand and collapse icons based on your application requirements.


Right to left (RTL)

Blazor TreeView supports right-to-left (RTL) direction rendering for users working in right-to-left languages like Hebrew, Arabic, or Persian.


Web accessibility

  • Fully supports WAI-ARIA accessibility guidelines for working with screen readers and assistive devices.
  • Follows WAI-ARIA best practices for implementing keyboard interaction.
  • Designs the UI element visuals such as foreground color, background color, line spacing, text, and images based on WCAG 2.0 standard.

Developer-friendly APIs

The Blazor TreeView component has a rich set of developer-friendly APIs to customize all UI elements and behaviors, allowing you to provide the best experience to your end users.


Blazor TreeView Code Example

Easily get started with the Blazor TreeView using a few simple lines of C# code example as demonstrated below,

@using Syncfusion.Blazor.Navigations
<SfTreeView TValue="MailItem">
<TreeViewFieldsSettings TValue="MailItem" Id="Id" DataSource="@MyFolder" Text="FolderName" ParentID="ParentId" HasChildren="HasSubFolders" Expanded="Expanded"></TreeViewFieldsSettings>
</SfTreeView>

@code{
public class MailItem
{
    public string Id { get; set; }
    public string ParentId { get; set; }
    public string FolderName { get; set; }
    public bool Expanded { get; set; }
    public bool HasSubFolders { get; set; }
}
List<MailItem> MyFolder = new List<MailItem>();
protected override void OnInitialized()
{
    base.OnInitialized();
    MyFolder.Add(new MailItem
    {
        Id = "1",
        FolderName = "Inbox",
        HasSubFolders = true,
        Expanded = true
    });
    MyFolder.Add(new MailItem
    {
        Id = "2",
        ParentId = "1",
        FolderName = "Categories",
        Expanded = true,
        HasSubFolders = true
    });
    MyFolder.Add(new MailItem
    {
        Id = "3",
        ParentId = "2",
        FolderName = "Primary"
    });
    MyFolder.Add(new MailItem
    {
        Id = "4",
        ParentId = "2",
        FolderName = "Social"
    });
    MyFolder.Add(new MailItem
    {
        Id = "5",
        ParentId = "2",
        FolderName = "Promotions"
    });
}
}

Other supported frameworks

TreeView is also available in JavaScript, Angular, React, and Vue frameworks that are built from their own TypeScript libraries. Check out the different TreeView platforms from the links below,




Blazor Components – 70+ UI and DataViz Components

Frequently Asked Questions

  • Display hierarchical data in a tree-view structure.
  • Load a wide range of nodes with optimal performance.
  • Flexible data binding with support to use data sources such as Web API, OData, Entity Framework, and more.
  • Drag and drop multiple selected tree nodes anywhere.
  • Select multiple nodes using built-in check boxes.
  • Edit node text inline with editable nodes support.
  • Easily customize nodes, expand icons, and collapse icons.
  • One of the best Blazor TreeView in the market that offers feature-rich UI to interact with the software.
  • Simple configuration and APIs.
  • Supports all modern browsers.
  • Touch-friendly and responsive.
  • Extensive demos, documentation, and videos to learn quickly and get started with Blazor TreeView.

We do not sell the Blazor TreeView separately. It is only available for purchase as part of the Syncfusion Blazor suite, which contains over 65 native Blazor components, including the TreeView. A single developer license for the Syncfusion Essential Studio for Blazor suite costs $995.00 USD, including one year of support and updates. On top of this, we might be able to offer additional discounts based on currently active promotions. Please contact our sales team today to see if you qualify for any additional discounts.

You can find our Blazor TreeView demo here.

No, our 65 Blazor components, including TreeView, are not sold individually, only as a single package. However, we have competitively priced the product so it only costs a little bit more than what some other vendors charge for their tree view alone. We have also found that, in our experience, our customers usually start off using one of our products and then expand to several products quickly, so we felt it was best to offer all 65 Blazor components for a flat fee of $995/developer. On top of this, we might be able to offer additional discounts based on currently active promotions. Please contact our sales team today to see if you qualify for any additional discounts.

No, this is a commercial product and requires a paid license. However, a free community license is also available for companies and individuals whose organizations have less than $1 million USD in annual gross revenue and five or fewer developers.

A good place to start would be our comprehensive getting started documentation.

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