Remote Grouping
Remote (server-side) operations can boost the DataGrid's performance on large datasets. In this demo, the DataGrid works with a million records seamlessly because they are processed on the server.
To notify the DataGrid that it works with a pre-processed dataset, set the remoteOperations option to true.
You can also specify options that allow the widget to load data on demand to reduce the amount of transmitted data. Set the grouping.autoExpandAll option to false to collapse all the groups at startup. Data for each group is loaded only when the user expands the group. Enable the "virtual" scrolling.mode to load only those records that come into the viewport when the grid is scrolled vertically.
The DataGrid communicates with the server according to a protocol. Refer to the Load Data article for information on it.
Feel free to share demo-related thoughts here.
If you have technical questions, please create a support ticket in the DevExpress Support Center.
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import React from 'react';
import DataGrid, { Scrolling, RemoteOperations, Column, Grouping, GroupPanel, Summary, GroupItem } from 'devextreme-react/data-grid';
import * as AspNetData from 'devextreme-aspnet-data-nojquery';
const dataSource = AspNetData.createStore({
key: 'Id',
loadUrl: 'https://js.devexpress.com/Demos/WidgetsGalleryDataService/api/Sales'
});
class App extends React.Component {
render() {
return (
<DataGrid
elementAttr ={{
id: 'gridContainer'
}}
dataSource={dataSource}
showBorders={true}
wordWrapEnabled={true}
>
<RemoteOperations groupPaging={true} />
<Scrolling mode={'virtual'} />
<Grouping autoExpandAll={false} />
<GroupPanel visible={true} />
<Column dataField={'Id'} dataType={'number'} width={75} />
<Column dataField={'ProductSubcategoryName'} caption={'Subcategory'} width={150} />
<Column dataField={'StoreName'} caption={'Store'} width={150} groupIndex={0} />
<Column dataField={'ProductCategoryName'} caption={'Category'} width={120} groupIndex={1} />
<Column dataField={'ProductName'} caption={'Product'} />
<Column dataField={'DateKey'} caption={'Date'} dataType={'date'} format={'yyyy-MM-dd'} width={100} />
<Column dataField={'SalesAmount'} caption={'Amount'} format={'currency'} width={100} />
<Summary>
<GroupItem
column={'Id'}
summaryType={'count'} />
</Summary>
</DataGrid>
);
}
}
export default App;
import React from 'react';
import ReactDOM from 'react-dom';
import App from './App.js';
ReactDOM.render(
<App />,
document.getElementById('app')
);
<!DOCTYPE html>
<html>
<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" />
<link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/19.1.5/css/dx.common.css" />
<link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/19.1.5/css/dx.light.css" />
<link rel="stylesheet" type="text/css" href="styles.css" />
<script src="https://unpkg.com/core-js@2.4.1/client/shim.min.js"></script>
<script src="https://unpkg.com/systemjs@0.21.3/dist/system.js"></script>
<script type="text/javascript" src="config.js"></script>
<script type="text/javascript">
System.import('./index.js');
</script>
</head>
<body class="dx-viewport">
<div class="demo-container">
<div id="app"></div>
</div>
</body>
</html>
#gridContainer {
height: 420px;
width: 100%;
}
System.config({
transpiler: 'plugin-babel',
paths: {
'npm:': 'https://unpkg.com/'
},
defaultExtension: 'js',
meta: {
'devextreme-aspnet-data-nojquery': {
'esModule': true
}
},
map: {
'react': 'npm:react@16/umd/react.development.js',
'react-dom': 'npm:react-dom@16/umd/react-dom.development.js',
'prop-types': 'npm:prop-types/prop-types.js',
'devextreme': 'npm:devextreme@19.1',
'devextreme-react': 'npm:devextreme-react@19.1',
'devextreme-aspnet-data-nojquery': 'npm:devextreme-aspnet-data-nojquery@2.4.2',
'jszip': 'npm:jszip@3.1.3/dist/jszip.min.js',
'quill': 'npm:quill@1.3.6/dist/quill.js',
'devexpress-diagram': 'npm:devexpress-diagram',
// SystemJS plugins
'plugin-babel': 'npm:systemjs-plugin-babel@0/plugin-babel.js',
'systemjs-babel-build':
'npm:systemjs-plugin-babel@0/systemjs-babel-browser.js'
},
packages: {
'devextreme': {
defaultExtension: 'js'
},
'devextreme-react': {
main: 'index.js'
}
},
babelOptions: {
sourceMaps: false,
stage0: true,
react: true
}
});