Sorting Columns

The FlexGrid control relies on the CollectionView class for sorting data.

Use the grid's allowSorting property to determine whether users should be able to sort the grid by clicking the column header cells:

AllowSorting.None: Users cannot sort the grid by clicking the column headers.

AllowSorting.SingleColumn: Users may sort the grid by a single column at a time. Clicking the column header sorts the column or flips the sort direction. Ctrl+Click removes the sort. (This is the default setting.)

AllowSorting.MultiColumn: Users may sort the grid by multiple columns at a time. Clicking the column header sorts the column or flips the sort direction. Ctrl+Click removes the sort for that column. Ctrl+Shift+Click removes all sorts.

Learn about FlexGrid | FlexGrid API Reference

import 'bootstrap.css'; import '@grapecity/wijmo.styles/wijmo.css'; import './styles.css'; import { FlexGrid, AllowSorting } from '@grapecity/wijmo.grid'; import { ComboBox } from '@grapecity/wijmo.input'; document.readyState === 'complete' ? init() : window.onload = init; function init() { // default behavior: single column sorting var theGrid = new FlexGrid('#theGrid', { itemsSource: getData(), allowSorting: AllowSorting.MultiColumn }); // change the allowSorting value new ComboBox('#cmbSort', { itemsSource: 'None,SingleColumn,MultiColumn'.split(','), selectedIndex: 2, selectedIndexChanged: (s) => { theGrid.collectionView.sortDescriptions.clear(); theGrid.allowSorting = s.selectedIndex; } }); } // generate some random data function getData() { var countries = 'US,Germany,UK,Japan,Italy,Greece'.split(','), data = []; for (var i = 0; i < 200; i++) { data.push({ id: i, country: countries[i % countries.length], downloads: Math.round(Math.random() * 20000), sales: Math.random() * 10000, expenses: Math.random() * 5000, num1: Math.random() * 5000, num2: Math.random() * 5000, num3: Math.random() * 5000, num4: Math.random() * 5000, num5: Math.random() * 5000, }); } return data; }
<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <title>GrapeCity Wijmo FlexGrid Sorting</title> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <!-- SystemJS --> <script src="node_modules/systemjs/dist/system.src.js"></script> <script src="systemjs.config.js"></script> <script> System.import('./src/app'); </script> </head> <body> <div class="container-fluid"> <label> allowSorting <input id="cmbSort"> </label> <div id="theGrid"></div> </div> </body> </html>
.wj-flexgrid { max-height: 250px; margin: 10px 0; } label { display: block; }
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