Aggregates

FlexGrid's columns have an aggregate property that allows you to show data summaries for the whole grid or for each group. To show group aggregates, set the aggregate property on the columns that you want to aggregate, and create groups by dragging the column headers into the group panel above the grid. Notice how the group rows contain the sum of the 'Sales' and 'Expenses' columns for each group. The aggregates are updated automatically when you edit the data.

Group aggregates can adjust their display positions with the groupSummaryPosition property, which offers Top (the default), Bottom, and Auto options. In the Auto setting, the Group Summary Row appears at the bottom of the group when it is expanded, and at the top when the group is collapsed. Notice the shift in the position of group summaries when you change the Group Summary Position value via the dropdown menu.

Learn about FlexGrid | Aggregate Groups Documentation | FlexGrid API Reference

import 'bootstrap.css'; import '@mescius/wijmo.styles/wijmo.css'; import './styles.css'; import * as wjGrid from '@mescius/wijmo.grid'; import * as wjGridGrouppanel from '@mescius/wijmo.grid.grouppanel'; import { ComboBox } from '@mescius/wijmo.input'; // document.readyState === 'complete' ? init() : window.onload = init; // function init() { // // generate some random data var countries = 'US,Germany,UK,Japan,Italy,Greece'.split(','), products = 'Phones,Computers,Cameras,Stereos'.split(','), data = []; for (var i = 0; i < 200; i++) { data.push({ id: i, country: countries[i % countries.length], product: products[i % products.length], sales: Math.random() * 10000, expenses: Math.random() * 5000, }); } // // change the groupSummaryPosition value new ComboBox('#cmbGroupPos', { itemsSource: 'Top,Bottom,Auto'.split(','), selectedIndexChanged: (s) => { theGrid.groupSummaryPosition = s.selectedIndex; } }); // // create group panel grid var theGrid = new wjGrid.FlexGrid('#theGrid', { autoGenerateColumns: false, columns: [ { binding: 'id', header: 'ID', width: 60, isReadOnly: true }, { binding: 'country', header: 'Country' }, { binding: 'product', header: 'Product' }, { binding: 'sales', header: 'Sales', aggregate: 'Sum' }, { binding: 'expenses', header: 'Expenses', aggregate: 'Sum' } ], itemsSource: data }); // // create the group panel var theGroupPanel = new wjGridGrouppanel.GroupPanel('#theGroupPanel', { placeholder: 'Drag columns here to create groups', grid: theGrid }); }
<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <title>MESCIUS Wijmo FlexGrid Aggregate Group</title> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <!-- SystemJS --> <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.21.5/system.src.js" integrity="sha512-skZbMyvYdNoZfLmiGn5ii6KmklM82rYX2uWctBhzaXPxJgiv4XBwJnFGr5k8s+6tE1pcR1nuTKghozJHyzMcoA==" crossorigin="anonymous"></script> <script src="systemjs.config.js"></script> <script> System.import('./src/app'); </script> </head> <body> <div class="container-fluid"> <div id="theGroupPanel"></div> <div id="theGrid"></div> <label> Group Summary Position <input id="cmbGroupPos"> </label> </div> </body> </html>
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