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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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<template> <div> <DxDataGrid :data-source="dataSource" :show-borders="true" :column-auto-width="true" :repaint-changes-only="true" > <DxEditing :allow-updating="true" :allow-adding="true" mode="batch" /> <DxPaging :enabled="false"/> <DxColumn data-field="FirstName"> <DxRequiredRule/> </DxColumn> <DxColumn data-field="LastName"> <DxRequiredRule/> </DxColumn> <DxColumn data-field="Position"> <DxRequiredRule/> </DxColumn> <DxColumn data-field="Phone"> <DxRequiredRule/> <DxPatternRule :pattern="pattern" message="Your phone must have &quot;(555) 555-5555&quot; format!" /> </DxColumn> <DxColumn data-field="Email"> <DxRequiredRule/> <DxEmailRule/> <DxAsyncRule :validation-callback="asyncValidation" message="Email address is not unique" /> </DxColumn> </DxDataGrid> </div> </template> <script> import { DxDataGrid, DxColumn, DxPaging, DxEditing, DxRequiredRule, DxEmailRule, DxPatternRule, DxAsyncRule } from 'devextreme-vue/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 }; } }); export default { components: { DxDataGrid, DxColumn, DxPaging, DxEditing, DxRequiredRule, DxEmailRule, DxPatternRule, DxAsyncRule }, data() { return { dataSource, pattern: /^\(\d{3}\) \d{3}-\d{4}$/i }; }, methods: { 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()); } } }; </script>
import { createApp } from 'vue'; import App from './App.vue'; createApp(App).mount('#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/20.2.3/css/dx.common.css" /> <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/20.2.3/css/dx.light.css" /> <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>
System.config({ transpiler: 'plugin-babel', meta: { '*.vue': { loader: 'vue-loader' }, 'devextreme-aspnet-data-nojquery': { 'esModule': true }, }, paths: { 'npm:': 'https://unpkg.com/' }, map: { 'vue': 'npm:vue@3.0.0/dist/vue.esm-browser.js', 'vue-loader': 'npm:dx-systemjs-vue-browser@1.0.15/index.js', 'devextreme-aspnet-data-nojquery': 'npm:devextreme-aspnet-data-nojquery@2.6.1/index.js', 'mitt': 'npm:mitt/dist/mitt.umd.js', 'rrule': 'npm:rrule@2.6.6/dist/es5/rrule.js', 'luxon': 'npm:luxon@1.25.0/build/global/luxon.min.js', 'es6-object-assign': 'npm:es6-object-assign@1.1.0', 'devextreme': 'npm:devextreme@20.2.3', 'devextreme-vue': 'npm:devextreme-vue@20.2.3', 'jszip': 'npm:jszip@3.5.0/dist/jszip.min.js', 'devextreme-quill': 'npm:devextreme-quill@0.9.5/dist/dx-quill.min.js', 'devexpress-diagram': 'npm:devexpress-diagram@2.0.0/dist/dx-diagram.js', 'devexpress-gantt': 'npm:devexpress-gantt@2.0.0/dist/dx-gantt.js', 'preact': 'npm:preact@10.5.5/dist/preact.js', 'preact/hooks': 'npm:preact@10.5.5/hooks/dist/hooks.js', 'plugin-babel': 'npm:systemjs-plugin-babel@0.0.25/plugin-babel.js', 'systemjs-babel-build': 'npm:systemjs-plugin-babel@0.0.25/systemjs-babel-browser.js' }, packages: { 'devextreme-vue': { main: 'index.js' }, 'devextreme': { defaultExtension: 'js' }, 'devextreme/events/utils': { main: 'index' }, 'devextreme/events': { main: 'index' }, 'es6-object-assign': { main: './index.js', defaultExtension: 'js' } }, babelOptions: { sourceMaps: false, stage0: true } });