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Data Grid
- Overview
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Data Binding
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Paging and Scrolling
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Editing
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Grouping
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Filtering and Sorting
- Focused Row
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Row Drag & Drop
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Selection
-
Columns
- State Persistence
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Appearance
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Templates
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Data Summaries
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Master-Detail
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Export to PDF
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Export to Excel
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Adaptability
- Keyboard Navigation
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Pivot Grid
- Overview
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Data Binding
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Field Chooser
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Features
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Export to Excel
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Tree List
- Overview
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Data Binding
- Sorting
- Paging
-
Editing
- Node Drag & Drop
- Focused Row
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Selection
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Filtering
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Column Customization
- State Persistence
- Adaptability
- Keyboard Navigation
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Scheduler
- Overview
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Data Binding
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Views
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Features
- Virtual Scrolling
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Grouping
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Customization
- Adaptability
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Html Editor
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Chat
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Diagram
- Overview
-
Data Binding
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Featured Shapes
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Custom Shapes
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Document Capabilities
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User Interaction
- UI Customization
- Adaptability
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Charts
- Overview
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Data Binding
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Area Charts
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Bar Charts
- Bullet Charts
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Doughnut Charts
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Financial Charts
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Line Charts
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Pie Charts
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Point Charts
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Polar and Radar Charts
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Range Charts
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Sparkline Charts
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Tree Map
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- Sankey Chart
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Combinations
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More Features
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Export
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Selection
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Tooltips
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Zooming
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Gantt
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Data
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- Strip Lines
- Export to PDF
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Filtering
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Gauges
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Bar Gauge
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Circular Gauge
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Linear Gauge
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Navigation
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Menu
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Drawer
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Tab Panel
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Tabs
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Toolbar
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Tree View
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Layout
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Tile View
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Gallery
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Editors
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Calendar
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Date Box
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Date Range Box
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Number Box
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Select Box
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Tag Box
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Form
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Action Sheet
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Context Menu
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List
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Lookup
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Maps
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Map
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Vector Map
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Dialogs and Notifications
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Localization
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React Data Grid - SignalR Service
This example demonstrates real-time data update in a DataGrid bound to a SignalR service. Access to the service is configured in a CustomStore.
The CustomStore fetches the remote dataset at launch and keeps its local copy. Whenever the remote dataset changes, the server calls a client-side function that updates the local copy of the dataset (updateStockPrices
in this demo). This function uses the store's push(changes) method.
For server-side configuration, refer to the ASP.NET MVC version of this demo.
To give you the ability to edit code on the fly, the demo uses SystemJS. For this reason, launching the demo takes some time. We strongly recommend that you do not use this approach in real projects.
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Backend API
x
import React, { useEffect, useState } from 'react';
import DataGrid, {
Column,
} from 'devextreme-react/data-grid';
import CustomStore from 'devextreme/data/custom_store';
import { HubConnectionBuilder, HttpTransportType } from '@aspnet/signalr';
import PriceCell from './PriceCell.tsx';
import ChangeCell from './ChangeCell.tsx';
const App = () => {
const [connectionStarted, setConnectionStarted] = useState(false);
const [dataSource, setDataSource] = useState(null);
useEffect(() => {
const hubConnection = new HubConnectionBuilder()
.withUrl('https://js.devexpress.com/Demos/NetCore/liveUpdateSignalRHub', {
skipNegotiation: true,
transport: HttpTransportType.WebSockets,
})
.build();
const store = new CustomStore({
load: () => hubConnection.invoke('getAllStocks'),
key: 'symbol',
});
hubConnection
.start()
.then(() => {
hubConnection.on('updateStockPrice', (data) => {
store.push([{ type: 'update', key: data.symbol, data }]);
});
setConnectionStarted(true);
setDataSource(store);
});
}, []);
return (
<div>
{connectionStarted && (
<DataGrid
id="gridContainer"
dataSource={dataSource}
showBorders={true}
repaintChangesOnly={true}
highlightChanges={true}
>
<Column dataField="lastUpdate" dataType="date" width={115} format="longTime" />
<Column dataField="symbol" />
<Column dataField="price" dataType="number" format="#0.####" cellRender={PriceCell} />
<Column dataField="change" dataType="number" width={140} format="#0.####" cellRender={ChangeCell} />
<Column dataField="dayOpen" dataType="number" format="#0.####" />
<Column dataField="dayMin" dataType="number" format="#0.####" />
<Column dataField="dayMax" dataType="number" format="#0.####" />
</DataGrid>
)}
</div>
);
};
export default App;
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For more information about integration with push services, refer to the following help topic: Integration with Push Services.
NOTE
Data used in this demo is for demonstration purposes only.