FlexGrid Import Export Excel Asynchronous

The sample demonstrates how to export or import FlexGrid content to/from an Excel(.xlsx) file asynchronously with the saveAsync/loadAsync methods of the FlexGridXlsxConverter class.

import 'bootstrap.css'; import '@grapecity/wijmo.styles/wijmo.css'; import './style.css'; import * as wjCore from '@grapecity/wijmo'; import * as wjGrid from '@grapecity/wijmo.grid'; import * as wjGridXlsx from '@grapecity/wijmo.grid.xlsx'; import { getProductOrders } from './data'; document.readyState === 'complete' ? init() : window.onload = init; function init() { let data = getProductOrders(500); let customContent = false; let includeColumnHeader = false; let grid = new wjGrid.FlexGrid('#flexgrid', { itemsSource: data, itemFormatter: itemFormatter, columns: [ { binding: 'id', header: 'ID' }, { binding: 'start', header: 'Start Date', format: 'd' }, { binding: 'end', header: 'End Date', format: 'd' }, { binding: 'country', header: 'Country' }, { binding: 'product', header: 'Product' }, { binding: 'color', header: 'Color' }, { binding: 'amount', header: 'Amount', format: 'c', aggregate: 'Sum' }, { binding: 'amount2', header: 'Pending', format: 'c', aggregate: 'Sum' }, { binding: 'discount', header: 'Discount', format: 'p1', aggregate: 'Avg' }, { binding: 'active', header: 'Active', width: 185 } ] }); updateGroup(); onClick('customCellContent', (e) => { customContent = e.target.checked; grid.invalidate(); }); onClick('importIncludeColumnHeader', (e) => { includeColumnHeader = e.target.checked; document.querySelector('#exportIncludeColumnHeader').checked = includeColumnHeader; }); onClick('exportIncludeColumnHeader', (e) => { includeColumnHeader = e.target.checked; document.querySelector('#importIncludeColumnHeader').checked = includeColumnHeader; }); onClick('loadXlsx', () => { let inputEle = document.querySelector('#importFile'); if (inputEle.files[0]) { wjGridXlsx.FlexGridXlsxConverter.loadAsync(grid, inputEle.files[0], { includeColumnHeaders: includeColumnHeader }); } }); onClick('saveXlsx', () => { wjGridXlsx.FlexGridXlsxConverter.saveAsync(grid, { includeColumnHeaders: includeColumnHeader, includeCellStyles: false, formatItem: customContent ? exportFormatItem : null }, 'FlexGrid.xlsx'); }); // update group setting for the flex grid function updateGroup() { let groupNames = ['Product', 'Country', 'Amount'], cv, propName, groupDesc; if (grid) { // get the collection view, start update cv = grid.collectionView; cv.beginUpdate(); // clear existing groups cv.groupDescriptions.clear(); // add new groups for (let i = 0; i < groupNames.length; i++) { propName = groupNames[i].toLowerCase(); if (propName == 'amount') { // group amounts in ranges // (could use the mapping function to group countries into continents, // names into initials, etc) groupDesc = new wjCore.PropertyGroupDescription(propName, function (item, prop) { let value = item[prop]; if (value > 1000) return 'Large Amounts'; if (value > 100) return 'Medium Amounts'; if (value > 0) return 'Small Amounts'; return 'Negative'; }); cv.groupDescriptions.push(groupDesc); } else if (propName) { // group other properties by their specific values groupDesc = new wjCore.PropertyGroupDescription(propName); cv.groupDescriptions.push(groupDesc); } } // done updating cv.endUpdate(); } } function itemFormatter(panel, r, c, cell) { if (panel.cellType === wjGrid.CellType.Cell) { let binding = grid.columns[c].binding, row = grid.rows[r]; if (row instanceof wjGrid.GroupRow) { if (row._level <= 2) { if (binding === "active") { if (customContent) { let amount_val = grid.getCellData(r, c - 3, false), pending_val = grid.getCellData(r, c - 2, false), persentage_val = (pending_val / amount_val); cell.innerHTML = 'Amount/Pending: ' + Math.round(persentage_val * 100) / 100; } else { cell.innerHTML = ''; } } } } else { if (binding === 'color') { if (customContent) { cell.style.color = grid.getCellData(r, c, true); } else { cell.style.color = ''; } } } } } function exportFormatItem(args) { let p = args.panel, row = args.row, col = args.col, xlsxCell = args.xlsxCell, cell, color; if (p.cellType === wjGrid.CellType.Cell) { if (p.columns[col].binding === 'color') { if (xlsxCell.value) { if (!xlsxCell.style.font) { xlsxCell.style.font = {}; } xlsxCell.style.font.color = xlsxCell.value.toLowerCase(); } } else if (p.columns[col].binding === 'active' && p.rows[row] instanceof wjGrid.GroupRow) { cell = args.getFormattedCell(); xlsxCell.value = cell.textContent.trim(); } } } function onClick(id, fn) { document.querySelector('#' + id).addEventListener('click', fn); } }
<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <title>GrapeCity Wijmo FlexGrid Import Export Excel Asynchronous</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"> <!-- the flex grid --> <div class="row"> <div id="flexgrid"></div> </div> <div class="row"> <div class="col-md-6 col-xs-12"> <div class="form-inline well well-lg"> <input type="file" class="form-control" style="width: 250px;" id="importFile" accept="application/vnd.openxmlformats-officedocument.spreadsheetml.sheet, application/vnd.ms-excel.sheet.macroEnabled.12" /> <button id="loadXlsx" class="btn btn-default">Import</button> <div class="checkbox"> <label> <input id="importIncludeColumnHeader" type="checkbox"> Include Column Header </label> </div> </div> </div> <div class="col-md-6 col-xs-12"> <div class="form-inline well well-lg"> <button id="saveXlsx" class="btn btn-default">Export</button> <div class="checkbox"> <label> <input id="exportIncludeColumnHeader" type="checkbox"> Include Column Header </label> </div> <div class="checkbox"> <label> <input id="customCellContent" type="checkbox"> Custom Cell Content </label> </div> </div> </div> </div> </div> </body> </html>
// data used to generate random items let countries = ['US', 'Germany', 'UK', 'Japan', 'Italy', 'Greece'], products = ['Widget', 'Gadget', 'Doohickey'], colors = ['Black', 'White', 'Red', 'Green', 'Blue']; export function getProductOrders(count) { let data = [], dt = new Date(); // add count items for (let i = 0; i < count; i++) { // constants used to create data items let date = new Date(dt.getFullYear(), i % 12, 25), countryId = Math.floor(Math.random() * countries.length), productId = Math.floor(Math.random() * products.length), colorId = Math.floor(Math.random() * colors.length); // create the item let item = { id: i, start: date, end: date, country: countries[countryId], product: products[productId], color: colors[colorId], amount: Math.random() * 10000, amount2: Math.random() * 10000, discount: Math.random() / 4, active: i % 4 == 0, }; // add the item to the list data.push(item); } return data; }
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