![]() ![]() IMPORTANT!!! The type of the value you set must be object. The tree item whose Value property is equal to the specified value will be selected. The key thing here is that these children have only one parent, if they had more this wouldn’t strictly be a tree ( it would be some sort of graph), some examples: Dad -> Son, Daughter Boss. You can control the selection state of the RadzenTree component via its Value property. Propagate the Template to the childrenĪ = FileOrFolderTemplate Set some margin if the current data item is a file (!isDirectory)īuilder.AddAttribute(2, "Style", "margin-left: 24px") Ī = Directory.EnumerateFileSystemEntries(directory) Ī = (path) => Directory.Exists((string)path) RenderFragment FileOrFolderTemplate = (context) => builder =>īool isDirectory = Directory.Exists(path) īuilder.AddAttribute(1, "Icon", isDirectory ? "folder" : "insert_drive_file") Here is an example:Įntries = Directory.GetDirectories(HostEnvironment.ContentRootPath) If you don't see these tabs, click anywhere in the. Tip: Use the Chart Design and Format tabs to customize the look of your chart. You can also use Recommended Charts to create a treemap chart by going to Insert > Recommended Charts > All Charts. The most straight forward way to define a RadzenTree is to specify its items. Go to the Insert tab > Insert Hierarchy Chart > Treemap. The sample application used for this tutorial is available in the Radzen Github repository. Now when you run the example the tree will load the products on demand - when the user expands a category node. What property to use for their text and that they don’t have children of their own. Those two configure the child nodes - specify Set a property with Name categories and Value $ = (product) => false. Handle the Load event of the page and invoke the getCategories data source method.Tree node will display the products from that category. We will create a Tree component that displays the items from the Northwind Categories table. Using in Radzen Displaying Categories and Products Check also the component guide and API reference. This article demonstrates how to use the Radzen Blazor Tree component.
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