Vue 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.

Backend API

<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 "(555) 555-5555" format!" /> </DxColumn> <DxColumn data-field="Email"> <DxRequiredRule/> <DxEmailRule/> <DxAsyncRule :validation-callback="asyncValidation" message="Email address is not unique" /> </DxColumn> </DxDataGrid> </div> </template> <script setup lang="ts"> import { DxDataGrid, DxColumn, DxPaging, DxEditing, DxRequiredRule, DxEmailRule, DxPatternRule, DxAsyncRule, } from 'devextreme-vue/data-grid'; import { type ValidationCallbackData } from 'devextreme-vue/common'; import { createStore } from 'devextreme-aspnet-data-nojquery'; const baseUrl = 'https://js.devexpress.com/Demos/NetCore'; const url = `${baseUrl}/api/DataGridEmployeesValidation`; const emailValidationUrl = `${baseUrl}/RemoteValidation/CheckUniqueEmailAddress`; const dataSource = createStore({ key: 'ID', loadUrl: url, insertUrl: url, updateUrl: url, deleteUrl: url, onBeforeSend: (method, ajaxOptions) => { ajaxOptions.xhrFields = { withCredentials: true }; }, }); const pattern = /^$\d{3}$ \d{3}-\d{4}$/i; const asyncValidation = async (params: ValidationCallbackData) => { const response = await fetch(`${emailValidationUrl}?${new URLSearchParams({ id: params.data.ID, email: params.value, })}`); const result = await response.json(); return result; }; </script>

import { createApp } from 'vue'; import App from './App.vue'; import 'anti-forgery'; createApp(App).mount('#app');

<!DOCTYPE html> <html lang="en"> <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=5.0" /> <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/26.1.5/css/dx.light.css" /> </head> <body class="dx-viewport"> <div class="demo-container"> <div id="app"> </div> </div> <script src="bundles/vendor/vue.vendor.js"></script> <script src="./bundle.js"></script> </body> </html>

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.