Arrays and CollectionViews

When you set the grid's itemsSource property to a regular JavaScript array, it automatically creates an internal CollectionView and uses that as a data source so it can provide sorting and editing features without forcing you to create a CollectionView yourself. This internal view is exposed by the grid's CollectionView property, and you can use it to in case you need the extra functionality yourself. For example, the grid below is bound to a regular array, and the grid's collectionView property is used to show the currently selected item.

Learn about FlexGrid | Arrays and CollectionViews Documentation | FlexGrid API Reference

import 'bootstrap.css'; import '@grapecity/wijmo.styles/wijmo.css'; import { SortDescription, format } from '@grapecity/wijmo'; import { FlexGrid } from '@grapecity/wijmo.grid'; document.readyState === 'complete' ? init() : window.onload = init; function init() { // create some random data var countries = 'US,Germany,UK,Japan,Italy,Greece'.split(','); var data = []; for (var i = 0; i < countries.length; i++) { data.push({ id: i, country: countries[i], sales: Math.random() * 10000, expenses: Math.random() * 5000 }); } // bind a grid to the raw data var theGrid = new FlexGrid('#theGrid', { autoGenerateColumns: false, columns: [ { binding: 'country', header: 'Country', width: '2*' }, { binding: 'sales', header: 'Sales', width: '*', format: 'n2' }, { binding: 'expenses', header: 'Expenses', width: '*', format: 'n2' } ], itemsSource: data }); // show the current item var selItemElement = document.getElementById('selectedItem'); function updateCurrentInfo() { selItemElement.innerHTML = format('Country: <b>{country}</b>, Sales: <b>{sales:c0}</b> Expenses: <b>{expenses:c0}</b>', theGrid.collectionView.currentItem); } // update current item now and when the grid selection changes updateCurrentInfo(); theGrid.collectionView.currentChanged.addHandler(updateCurrentInfo); // sort the data by country var sd = new SortDescription('country', true); theGrid.collectionView.sortDescriptions.push(sd); }
<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <title>GrapeCity Wijmo FlexGrid Arrays and CollectionViews Binding</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"> <p id="selectedItem"></p> <div id="theGrid"></div> </div> </body> </html>
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