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Data Sources

Note that the Diagram widget is in the community technology preview (CTP) development stage.

The Diagram widget allows you to import data from a data source into a data toolbox.

Use the createDataSource method to create data toolbox items based on an external data source. End users can drag data items from the toolbox and drop them onto a canvas to build a diagram.

If a data source provides information about node relations, specify the layout option to generate a diagram automatically.



<script type="text/javascript"> $(function () { var diagram = $("#diagram").dxDiagram() .dxDiagram("instance"); diagram.createDataSource({ key: "0", title: "Employees", nodes: { dataSource: employees, keyExpr: "ID", textExpr: function (item) { return item && item.Full_Name.replace(" ", "\n"); }, parentKeyExpr: "Head_ID" }, layout: "tree" }); }); </script> <div id="diagram"></div> <script src="~/data/diagramEmployees.js"></script>
using Microsoft.AspNetCore.Mvc; namespace DevExtreme.NETCore.Demos.Controllers { public class DiagramController : Controller { public IActionResult DataSources() { return View(); } } }
#diagram { height: 600px; }