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    Data Grid

    Custom Data Source

    Documentation

    For consuming data from a data source, which is not supported by the DevExtreme data layer out of the box, the DataGrid uses the CustomStore. To load data, the CustomStore needs the load function that you should implement by yourself. Note that this store can be declared explicitly or in the DataSource configuration object.

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    window.onload = function() { var orders = new DevExpress.data.CustomStore({ load: function (loadOptions) { var deferred = $.Deferred(), params = "?"; params += "skip=" + loadOptions.skip; params += "&take=" + loadOptions.take; if (loadOptions.sort) { params += "&orderby=" + loadOptions.sort[0].selector; if (loadOptions.sort[0].desc) params += " desc"; } var xhr = new XMLHttpRequest(); xhr.open("GET", "https://js.devexpress.com/Demos/WidgetsGallery/data/orderItems" + params, true); xhr.onreadystatechange = function() { if (xhr.readyState === 4) { if (xhr.status === 200) { var result = JSON.parse(xhr.responseText); deferred.resolve(result.items, { totalCount: result.totalCount }); } else { deferred.reject("Data Loading Error"); } } }; xhr.send(); return deferred.promise(); } }); var viewModel = { dataGridOptions: { dataSource: { store: orders }, showBorders: true, remoteOperations: { sorting: true, paging: true }, paging: { pageSize: 12 }, pager: { showPageSizeSelector: true, allowedPageSizes: [8, 12, 20] }, columns: [ "OrderNumber", "OrderDate", "StoreCity", "StoreState", "Employee", { dataField: "SaleAmount", format: "currency" } ] } }; ko.applyBindings(viewModel, document.getElementById("data-grid-demo")); };
    <!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/3.4.1/jquery.min.js"></script> <script>window.jQuery || document.write(decodeURIComponent('%3Cscript src="js/jquery.min.js"%3E%3C/script%3E'))</script> <script src="https://cdnjs.cloudflare.com/ajax/libs/knockout/3.4.2/knockout-min.js"></script> <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/19.2.5/css/dx.common.css" /> <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/19.2.5/css/dx.light.css" /> <script src="https://cdn3.devexpress.com/jslib/19.2.5/js/dx.all.js"></script> <script src="index.js"></script> <link rel="stylesheet" type="text/css" href="styles.css" /> </head> <body class="dx-viewport"> <div class="demo-container"> <div id="data-grid-demo"> <div id="gridContainer" data-bind="dxDataGrid: dataGridOptions"></div> </div> </div> </body> </html>