Print in Angular Treegrid component
27 Apr 202416 minutes to read
To print the TreeGrid, use the print
method from treegrid instance. The print option can be displayed on the toolbar
by adding the print
toolbar item.
import { NgModule,ViewChild } from '@angular/core'
import { BrowserModule } from '@angular/platform-browser'
import { TreeGridModule } from '@syncfusion/ej2-angular-treegrid'
import { PageService, SortService, FilterService,EditService,ToolbarService } from '@syncfusion/ej2-angular-treegrid'
import {ButtonModule} from '@syncfusion/ej2-angular-buttons'
import { DropDownListAllModule } from '@syncfusion/ej2-angular-dropdowns'
import { Component, OnInit } from '@angular/core';
import { sampleData } from './datasource';
import { ToolbarItems } from '@syncfusion/ej2-angular-treegrid';
@Component({
imports: [
TreeGridModule,
ButtonModule,
DropDownListAllModule,
],
providers: [PageService,
SortService,
FilterService,
EditService,
ToolbarService],
standalone: true,
selector: 'app-container',
template: `<ejs-treegrid [dataSource]='data' height='265' [treeColumnIndex]='1' childMapping='subtasks' [toolbar]='toolbarOptions'>
<e-columns>
<e-column field='taskID' headerText='Task ID' textAlign='Right' width=90></e-column>
<e-column field='taskName' headerText='Task Name' textAlign='Left' width=180></e-column>
<e-column field='startDate' headerText='Start Date' textAlign='Right' format='yMd' width=120></e-column>
<e-column field='duration' headerText='Duration' textAlign='Right' width=110></e-column>
</e-columns>
</ejs-treegrid>`
})
export class AppComponent implements OnInit {
public data?: Object[];
public toolbarOptions?: ToolbarItems[];
ngOnInit(): void {
this.data = sampleData;
this.toolbarOptions = ['Print'];
}
}
import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));
Page setup
Some of the print options cannot be configured through JavaScript code. So, you have to customize the layout, paper size, and margin options using the browser page setup dialog. Please refer to the following links to know more about the browser page setup:
Print using an external button
To print the treegrid from an external button, invoke the print
method.
import { NgModule,ViewChild } from '@angular/core'
import { BrowserModule } from '@angular/platform-browser'
import { TreeGridModule } from '@syncfusion/ej2-angular-treegrid'
import { PageService, SortService, FilterService } from '@syncfusion/ej2-angular-treegrid'
import {ButtonModule} from '@syncfusion/ej2-angular-buttons'
import { Component, OnInit } from '@angular/core';
import { sampleData } from './datasource';
import { TreeGridComponent } from '@syncfusion/ej2-angular-treegrid';
@Component({
imports: [
TreeGridModule,
ButtonModule
],
providers: [PageService,
SortService,
FilterService],
standalone: true,
selector: 'app-container',
template: `
<button ejs-button cssClass="btn btn-default" content="Print" (click)="onClicked()"></button>
<ejs-treegrid [dataSource]='data' height='265' #treegrid [treeColumnIndex]='1' childMapping='subtasks'>
<e-columns>
<e-column field='taskID' headerText='Task ID' textAlign='Right' width=90></e-column>
<e-column field='taskName' headerText='Task Name' textAlign='Left' width=180></e-column>
<e-column field='startDate' headerText='Start Date' textAlign='Right' format='yMd' width=120></e-column>
<e-column field='duration' headerText='Duration' textAlign='Right' width=110></e-column>
</e-columns>
</ejs-treegrid>`
})
export class AppComponent implements OnInit {
public data?: Object[];
@ViewChild('treegrid')
public treeGridObj?: TreeGridComponent;
ngOnInit(): void {
this.data = sampleData;
}
onClicked(): void {
(this.treeGridObj as TreeGridComponent).print();
}
}
import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));
Print the visible page
By default, the treegrid prints all the pages. To print the current page alone, set the printMode
to CurrentPage
.
import { NgModule,ViewChild } from '@angular/core'
import { BrowserModule } from '@angular/platform-browser'
import { TreeGridModule } from '@syncfusion/ej2-angular-treegrid'
import { PageService, SortService, FilterService,EditService,ToolbarService } from '@syncfusion/ej2-angular-treegrid'
import {ButtonModule} from '@syncfusion/ej2-angular-buttons'
import { DropDownListAllModule } from '@syncfusion/ej2-angular-dropdowns'
import { Component, OnInit } from '@angular/core';
import { sampleData } from './datasource';
import { ToolbarItems } from '@syncfusion/ej2-angular-treegrid';
@Component({
imports: [
TreeGridModule,
ButtonModule,
DropDownListAllModule,
],
providers: [PageService,
SortService,
FilterService,
EditService,
ToolbarService],
standalone: true,
selector: 'app-container',
template: `<ejs-treegrid [dataSource]='data' height='220' [allowPaging]='true' pageSettings='pager' printMode='CurrentPage' [treeColumnIndex]='1' childMapping='subtasks' [toolbar]='toolbarOptions'>
<e-columns>
<e-column field='taskID' headerText='Task ID' textAlign='Right' width=90></e-column>
<e-column field='taskName' headerText='Task Name' textAlign='Left' width=180></e-column>
<e-column field='startDate' headerText='Start Date' textAlign='Right' format='yMd' width=120></e-column>
<e-column field='duration' headerText='Duration' textAlign='Right' width=110></e-column>
</e-columns>
</ejs-treegrid>`
})
export class AppComponent implements OnInit {
public data?: Object[];
public toolbarOptions?: ToolbarItems[];
public pager?: Object;
ngOnInit(): void {
this.data = sampleData;
this.toolbarOptions = ['Print'];
this.pager = { pageSize: 8 }
}
}
import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));
Print large number of columns
By default, the browser uses A4 as page size option to print pages and to adapt the size of the page the browser print preview will auto-hide the overflowed contents. Hence treegrid with large number of columns will cut off to adapt the print page.
To show large number of columns when printing, adjust the scale option from print option panel based on your content size.
Show or Hide columns while Printing
You can show a hidden column or hide a visible column while printing the treegrid using toolbarClick
and printComplete
events.
In the toolbarClick
event, based on args.item.text
as Print
. We can show or hide columns by setting column.visible
property to true
or false
respectively.
In the printComplete event, We have reversed the state back to the previous state.
In the below example, we have Duration
as a hidden column in the treegrid. While printing, we have changed Duration
to visible column and StartDate
as hidden column.
import { NgModule,ViewChild } from '@angular/core'
import { BrowserModule } from '@angular/platform-browser'
import { TreeGridModule } from '@syncfusion/ej2-angular-treegrid'
import { PageService, SortService, FilterService,EditService,ToolbarService } from '@syncfusion/ej2-angular-treegrid'
import {ButtonModule} from '@syncfusion/ej2-angular-buttons'
import { DropDownListAllModule } from '@syncfusion/ej2-angular-dropdowns'
import { Component, OnInit, ViewChild } from '@angular/core';
import { sampleData } from './datasource';
import { ClickEventArgs } from '@syncfusion/ej2-navigations';
import { Column, ToolbarItems, TreeGridComponent } from '@syncfusion/ej2-angular-treegrid';
@Component({
imports: [
TreeGridModule,
ButtonModule,
DropDownListAllModule,
],
providers: [PageService,
SortService,
FilterService,
EditService,
ToolbarService],
standalone: true,
selector: 'app-container',
template: `<ejs-treegrid [dataSource]='data' (toolbarClick)='toolbarClick($event)' #treegrid height='265' [allowPaging]='true' pageSettings='pager' printMode='CurrentPage' [treeColumnIndex]='1'
(printComplete)='printComplete()' childMapping='subtasks' [toolbar]='toolbarOptions'>
<e-columns>
<e-column field='taskID' headerText='Task ID' textAlign='Right' width=90></e-column>
<e-column field='taskName' headerText='Task Name' textAlign='Left' width=180></e-column>
<e-column field='startDate' headerText='Start Date' textAlign='Right' format='yMd' width=120></e-column>
<e-column field='duration' headerText='Duration' textAlign='Right' width=110></e-column>
</e-columns>
</ejs-treegrid>`
})
export class AppComponent implements OnInit {
public data?: Object[];
public toolbarOptions?: ToolbarItems[];
@ViewChild('treegrid')
public treeGridObj?: TreeGridComponent;
ngOnInit(): void {
this.data = sampleData;
this.toolbarOptions = ['Print'];
}
toolbarClick(args: ClickEventArgs): void {
if (args.item.text === 'Print') {
let cols: Column[] = (this.treeGridObj as TreeGridComponent).columns as Column[];
for (var i = 0; i < cols.length; i++) {
if (cols[i].field == "duration") {
cols[i].visible = true;
}
else if (cols[i].field == "startDate") {
cols[i].visible = false;
}
}
}
}
printComplete(): void {
let cols: Column[] = (this.treeGridObj as TreeGridComponent).columns as Column[];
for (var i = 0; i < cols.length; i++) {
if (cols[i].field == "duration") {
cols[i].visible = false;
}
else if (cols[i].field == "startDate") {
cols[i].visible = true;
}
}
}
}
import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));
Limitations of Printing Large Data
When treegrid contains large number of data, printing all the data at once is not a best option for the browser performance. Because to render all the DOM elements in one page will produce performance issues in the browser. It leads to browser slow down or browser hang.
If printing of all the data is still needed, we suggest to Export the treegrid to Excel
or CSV
or Pdf
and then print it from another non-web based application.
You can refer to our
Angular Tree Grid
feature tour page for its groundbreaking feature representations. You can also explore ourAngular Tree Grid example
to knows how to present and manipulate data.