New Property ,īecause the Bind property takes an IEnumerable source, you can data bind TreeView to create trees. Image = "/Content/images/electronics.png", Public static Property GetData(string val) TreeView We'll use the following model class for most of this blog because it returns an array with hierarchical data: Using the API of the TreeList for ASP.Use TreeView to display the headings in a document, the entries in an index, the files and directories on a disk, or any other kind of information that would be best displayed as a hierarchy.Basic Usage of the TreeList HtmlHelper for ASP.NET MVC (Demo).The TreeList is accessible for screen readers, supports WAI-ARIA attributes, and delivers keyboard shortcuts for faster navigation. The control provides localization of its messages. The TreeList supports different modes of row selection. You can independently control vertical and horizontal scrolling in the component. The TreeList allows you to set locked (frozen) columns, which remain visible while you scroll the TreeList horizontally. You can export the content of the TreeList to PDF with this built-in functionality. The control enables you to export its content to Excel. The TreeList allows you to display built-in aggregate calculations, when the supplied data is grouped. Use the built-in paging functionality to paginate the data. The TreeList supports various editing modes that allow you to control the way the data is represented. You can bind the TreeList to remote data. Public async Task TreeList_Read( DataSourceRequest request) Return Json(result, JsonRequestBehavior.AllowGet) Var result = GetDirectory().ToTreeDataSourceResult(request, Public JsonResult All( DataSourceRequest request) If it is not defined, the TreeList will calculate and assign its value on the client. Define it only if you want to use lazy-loading. ![]() M.ParentId(f => f.ReportsTo).Nullable(true) Read(read => read.Action("Index", "EmployeeDirectory")) Right-click the ~/Models folder in the solution explorer and add a new EmployeeViewModel =>Ĭolumns.Add().Field(f => f.FirstName).Width(250).Title("First Name") Ĭolumns.Add().Field(e => e.LastName).Title("Last Name") Ĭolumns.Add().Field(e => e.Extension).Title("Ext").Format("") Leave all other options as they are set by default. Click Next.Ĭhoose the Employees table from the Which database objects do you want to include in your model?. Configure a connection to the Northwind database. Pick the Generate from database option and click Next. This starts the Entity Data Model Wizard. ![]() Name the model Northwind.edmx and click Next. Choose Data > ADO.NET Entity Data Model in the Add New Item dialog. Right-click the ~/Models folder in the solution explorer and pick Add new item. If you decided not to use the Telerik UI for ASP.NET MVC Visual Studio Extensions, follow the steps from the introductory article to add Telerik UI for ASP.NET MVC to the application.Īdd a new Entity Framework Data Model. Name the application KendoGridServerBinding. If you have installed the Telerik UI for ASP.NET MVC Visual Studio Extensions, create a Telerik UI for ASP.NET MVC application. Nullable(false)), root items will be items which have a default value for their data type. Nullable(true), root items with be items whose ParentId field values are null. The TreeList distinguishes the root items based on the ParentId field. The following example demonstrates how to define the TreeList. The TreeList enables the display of self-referencing tabular data and allows sorting, filtering, and data editing. The Telerik UI TreeList HtmlHelper for ASP.NET MVC is a server-side wrapper for the Kendo UI TreeList widget.
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