FlexGrid Import Export Excel Asynchronous (Angular)

The FlexGrid control allows users to import and export content to/from an Excel (.xlsx) file asynchronously. This sample demonstrates how to do so using the saveAsync/loadAsync methods of the FlexGridXlsxConverter class.

Learn about FlexGrid | FlexGrid API Reference

This example uses Angular.

import 'bootstrap.css'; import '@mescius/wijmo.styles/wijmo.css'; import './styles.css'; import '@angular/compiler'; import { Component, enableProdMode, NgModule, Inject, ViewChild } from '@angular/core'; import { platformBrowserDynamic } from '@angular/platform-browser-dynamic'; import { BrowserModule } from '@angular/platform-browser'; import { FormsModule } from '@angular/forms'; import { WjGridModule } from '@mescius/wijmo.angular2.grid'; import * as wjcCore from '@mescius/wijmo'; import * as wjcGrid from '@mescius/wijmo.grid'; import * as wjcXlsx from '@mescius/wijmo.xlsx'; import * as wjcGridXlsx from '@mescius/wijmo.grid.xlsx'; import { DataService } from './app.data'; @Component({ selector: 'app-component', templateUrl: 'src/app.component.html' }) export class AppComponent { data: any[]; includeColumnHeader = false; customContent = false; @ViewChild('flex', { static: true }) flex: wjcGrid.FlexGrid; constructor(@Inject(DataService) dataSvc: DataService) { this.data = dataSvc.getProductOrders(500); } initializeFlexSheet(flex: wjcGrid.FlexGrid) { let groupNames = ['Product', 'Country', 'Amount'], cv = flex.collectionView; // start update cv.beginUpdate(); // clear existing groups cv.groupDescriptions.clear(); // add new groups for (let i = 0; i < groupNames.length; i++) { let 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) let groupDesc = new wjcCore.PropertyGroupDescription(propName, (item: any, prop: string) => { 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 let groupDesc = new wjcCore.PropertyGroupDescription(propName); cv.groupDescriptions.push(groupDesc); } } // done updating cv.endUpdate(); } save() { wjcGridXlsx.FlexGridXlsxConverter.saveAsync(this.flex, { includeColumnHeaders: this.includeColumnHeader, includeStyles: false, formatItem: this.customContent ? this._exportFormatItem : null }, 'FlexGrid.xlsx'); } load() { let fileInput = <HTMLInputElement>document.getElementById('importFile'); if (fileInput.files[0]) { this.customContent = false; wjcGridXlsx.FlexGridXlsxConverter.loadAsync(this.flex, fileInput.files[0], { includeColumnHeaders: this.includeColumnHeader }); } } private _exportFormatItem(args: wjcGridXlsx.XlsxFormatItemEventArgs) { var p = args.panel, row = args.row, col = args.col, xlsxCell = args.xlsxCell, cell: HTMLElement; if (p.cellType === wjcGrid.CellType.Cell) { if (p.columns[col].binding === 'color') { if (xlsxCell.value) { if (!xlsxCell.style.font) { xlsxCell.style.font = {}; } xlsxCell.style.font.color = (<string>xlsxCell.value).toLowerCase(); } } else if (p.columns[col].binding === 'active' && p.rows[row] instanceof wjcGrid.GroupRow) { cell = args.getFormattedCell(); xlsxCell.value = cell.textContent.trim(); xlsxCell.style.hAlign = wjcXlsx.HAlign.Left; } } } } @NgModule({ imports: [WjGridModule, BrowserModule, FormsModule], providers: [DataService], declarations: [AppComponent], bootstrap: [AppComponent] }) export class AppModule { } enableProdMode(); // Bootstrap application with hash style navigation and global services. platformBrowserDynamic().bootstrapModule(AppModule);
<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <title>MESCIUS Wijmo FlexGrid Import Export Excel Asynchronous</title> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <!-- Polyfills --> <script src="node_modules/core-js/client/shim.min.js"></script> <script src="node_modules/zone.js/fesm2015/zone.min.js"></script> <!-- 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> // workaround to load 'rxjs/operators' from the rxjs bundle System.import('rxjs').then(function (m) { System.set(SystemJS.resolveSync('rxjs/operators'), System.newModule(m.operators)); System.import('./src/app.component'); }); </script> </head> <body> <app-component></app-component> </body> </html>
<div class="container-fluid"> <div class="row"> <!-- the grid --> <wj-flex-grid #flex [(itemsSource)]="data" (initialized)="initializeFlexSheet(flex)"> <wj-flex-grid-column header="ID" binding="id"></wj-flex-grid-column> <wj-flex-grid-column header="Start Date" binding="start" format="d"></wj-flex-grid-column> <wj-flex-grid-column header="End Date" binding="end" format="d"></wj-flex-grid-column> <wj-flex-grid-column header="Country" binding="country"></wj-flex-grid-column> <wj-flex-grid-column header="Product" binding="product"></wj-flex-grid-column> <wj-flex-grid-column header="Color" binding="color" [width]="70"> <ng-template wjFlexGridCellTemplate [cellType]="'Cell'" let-cell="cell" *ngIf="customContent"> <div [ngStyle]="{color: cell.item.color.toLowerCase()}"> {{cell.item.color}} </div> </ng-template> </wj-flex-grid-column> <wj-flex-grid-column header="Amount" binding="amount" format="c" aggregate="Sum"></wj-flex-grid-column> <wj-flex-grid-column header="Pending" binding="amount2" format="c2" aggregate="Sum"></wj-flex-grid-column> <wj-flex-grid-column header="Discount" binding="discount" format="p1" aggregate="Avg"></wj-flex-grid-column> <wj-flex-grid-column header="Active" binding="active" [width]="170"> <ng-template wjFlexGridCellTemplate [cellType]="'Group'" let-cell="cell" *ngIf="customContent"> <div style="text-align:left"> Amount/Pending: {{ cell.row.grid.getCellData(cell.row.index, 'amount', false) / cell.row.grid.getCellData(cell.row.index, 'amount2', false) | number:'1.2-2' }} </div> </ng-template> </wj-flex-grid-column> </wj-flex-grid> </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 (click)="load()" class="btn btn-default">Import</button> <div class="checkbox"> <label> <input [(ngModel)]="includeColumnHeader" 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 (click)="save()" class="btn btn-default">Export</button> <div class="checkbox"> <label> <input [(ngModel)]="includeColumnHeader" type="checkbox"> Include Column Header </label> </div> <div class="checkbox"> <label> <input [(ngModel)]="customContent" type="checkbox"> Custom Cell Content </label> </div> </div> </div> </div> </div>
import { Injectable } from '@angular/core'; @Injectable() export class DataService { getProductOrders(count: number) { let countries = ['US', 'Germany', 'UK', 'Japan', 'Italy', 'Greece'], products = ['Widget', 'Gadget', 'Doohickey'], colors = ['Black', 'White', 'Red', 'Green', 'Blue'], 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; } }
.wj-flexgrid { height: 400px; margin: 6px 0; } .checkbox label input[type=checkbox] { margin-right: 5px; } .checkbox label { margin-right: 10px; } .btn { margin-right: 5px; }
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packages: { "./src": { defaultExtension: 'ts' }, "node_modules": { defaultExtension: 'js' }, wijmo: { defaultExtension: 'js', } } }); })(this);