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Data Grid

Data Validation

The DataGrid allows you to validate user input. You can apply pre-defined validation rules or custom rules to individual columns.

In this demo, the following rules are used:

  • required
    Specifies that cells should not be empty.
  • pattern
    Specifies a pattern that cell values should match.
  • email
    Specifies that cell values match the Email pattern.
  • async
    Specifies custom validation parameters that are used to validate a value on the server.

For more information on these and other validation rules, refer to the following documentation section: Validation Rules.

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import React from 'react'; import DataGrid, { Column, Editing, Paging, RequiredRule, PatternRule, EmailRule, AsyncRule } from 'devextreme-react/data-grid'; import { createStore } from 'devextreme-aspnet-data-nojquery'; const url = 'https://js.devexpress.com/Demos/Mvc/api/DataGridEmployeesValidation'; const dataSource = createStore({ key: 'ID', loadUrl: url, insertUrl: url, updateUrl: url, deleteUrl: url, onBeforeSend: (method, ajaxOptions) => { ajaxOptions.xhrFields = { withCredentials: true }; } }); class App extends React.Component { render() { return ( <React.Fragment> <DataGrid dataSource={dataSource} showBorders={true} columnAutoWidth={true} repaintChangesOnly={true} > <Paging enabled={false} /> <Editing mode="batch" allowUpdating={true} allowAdding={true} /> <Column dataField="FirstName"> <RequiredRule /> </Column> <Column dataField="LastName"> <RequiredRule /> </Column> <Column dataField="Position"> <RequiredRule /> </Column> <Column dataField="Phone"> <RequiredRule /> <PatternRule message={'Your phone must have "(555) 555-5555" format!'} pattern={/^\(\d{3}\) \d{3}-\d{4}$/i} /> </Column> <Column dataField="Email"> <RequiredRule /> <EmailRule /> <AsyncRule message="Email address is not unique" validationCallback={asyncValidation} /> </Column> </DataGrid> </React.Fragment> ); } } function asyncValidation(params) { return fetch('https://js.devexpress.com/Demos/Mvc/RemoteValidation/CheckUniqueEmailAddress', { method: 'POST', headers: { 'Content-Type': 'application/json;' }, body: JSON.stringify({ id: params.data.ID, email: params.value }) }).then(response => response.json()); } 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/20.1.6/css/dx.common.css" /> <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/20.1.6/css/dx.light.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> <link rel="stylesheet" type="text/css" href="styles.css" /> </head> <body class="dx-viewport"> <div class="demo-container"> <div id="app"></div> </div> </body> </html>
System.config({ transpiler: 'plugin-babel', meta: { 'devextreme-aspnet-data-nojquery': { "esModule": true }, }, paths: { 'npm:': 'https://unpkg.com/' }, defaultExtension: 'js', 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-aspnet-data-nojquery': 'npm:devextreme-aspnet-data-nojquery@2.6.1', 'devextreme': 'npm:devextreme@20.1', 'devextreme-react': 'npm:devextreme-react@20.1', 'jszip': 'npm:jszip@3.1.3/dist/jszip.min.js', 'quill': 'npm:quill@1.3.7/dist/quill.js', 'devexpress-diagram': 'npm:devexpress-diagram@1.0.9', 'devexpress-gantt': 'npm:devexpress-gantt@1.0.7', // 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' }, 'devextreme/events/utils': { main: 'index' }, 'devextreme/events': { main: 'index' }, }, babelOptions: { sourceMaps: false, stage0: true, react: true } });