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Diagram

Web API Service

This demo shows the Diagram widget loading data from a Web API service.

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$(function() { var url = "https://js.devexpress.com/Demos/Mvc/api/DiagramEmployees"; var dataSource = DevExpress.data.AspNet.createStore({ key: "ID", loadUrl: url + "/Employees", insertUrl: url + "/InsertEmployee", updateUrl: url + "/UpdateEmployee", deleteUrl: url + "/DeleteEmployee", onBeforeSend: function(method, ajaxOptions) { ajaxOptions.xhrFields = { withCredentials: true }; }, onInserting: function(values) { values["ID"] = 0; values["HeadID"] = 0; values["Title"] = "New Position"; values["Prefix"] = "Mr"; values["FullName"] = "New Employee"; values["City"] = "LA"; values["State"] = "CA"; values["HireDate"] = new Date(); } }) $("#diagram").dxDiagram({ nodes: { dataSource: dataSource, keyExpr: "ID", textExpr: "Title", parentKeyExpr: "HeadID", autoLayout: { type: "tree" } }, toolbox: { groups: ["general"] } }); });
<!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <title>DevExtreme Demo</title> <meta http-equiv="X-UA-Compatible" content="IE=edge" /> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0" /> <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script> <script>window.jQuery || document.write(decodeURIComponent('%3Cscript src="js/jquery.min.js"%3E%3C/script%3E'))</script> <script src="https://cdn3.devexpress.com/jslib/20.1.4/js/dx-diagram.min.js"></script> <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/20.1.4/css/dx.common.css" /> <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/20.1.4/css/dx.light.css" /> <link rel="stylesheet" href="https://cdn3.devexpress.com/jslib/20.1.4/css/dx-diagram.min.css" /> <script src="https://cdn3.devexpress.com/jslib/20.1.4/js/dx.all.js"></script> <script src="https://unpkg.com/devextreme-aspnet-data@2.6.1/js/dx.aspnet.data.js"></script> <link rel="stylesheet" type="text/css" href="styles.css" /> <script src="index.js"></script> </head> <body class="dx-viewport"> <div class="demo-container"> <div id="diagram"> </div> </div> </body> </html>
#diagram { height: 725px; }