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Diagram

Web API Service

Documentation

This example demonstrates the Diagram widget communicating with a Web API service. All data editing and processing operations are delegated to the server. The DevExtreme.AspNet.Data extension’s createStore method configures access to the server from the client. The server implementation is available under the DiagramEmployeesController.cs tab in the ASP.NET MVC version of this demo.

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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/20.2.3/js/dx-diagram.min.js"></script> <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/20.2.3/css/dx.common.css" /> <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/20.2.3/css/dx.light.css" /> <link rel="stylesheet" href="https://cdn3.devexpress.com/jslib/20.2.3/css/dx-diagram.css" /> <script src="https://cdn3.devexpress.com/jslib/20.2.3/js/dx.all.js"></script> <script src="https://unpkg.com/devextreme-aspnet-data@2.7.1/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; }