Download File in Angular 2 (Download Pop-up not coming) - file

Question

I have a view button and on click I am calling Web API to download the word document file.
WebAPI is working fine, when I paste the download URL in browser (for example http://localhost:50963/api/Download/1022), browser is showing a pop-up to save/cancel.
I wanted to have the same behavior, i.e. when user click on View button, I need to show above download pop-up. API is getting called successfully, see below screenshot
download.service.ts
export class DownloadService {
constructor(private http: Http) {}
private downloadUrl = 'http://localhost:50963/api/Download/';
//Fetch all existing Templates
DownloadDocument(Doc_Id: number){
return this.http.get(this.downloadUrl + Doc_Id.toString())
}
}
document-list.component.ts
DownloadArticle(Doc: ArticleModel){
console.log("inside downloadarticle()",Doc.Doc_Id);
this.downloadservice.DownloadDocument(Doc.Doc_Id)
.subscribe(
err => {
console.log(err);
});
}

Answer 1

You need to do some workaround here. Angular 'http' service cannot give what you want. I pasted all my workable code here. You need to pick the part of your need.
retrieveJquery(fileId: number, fileName: string): void {
let that = this;
let useBase64 = false;
let iOS = false;
if (navigator.platform)
iOS = /iPad|iPhone|iPod/.test(navigator.platform);
else if (navigator.userAgent)
iOS = /iPad|iPhone|iPod/.test(navigator.userAgent);
let android = false;
if (navigator.platform)
android = /android/.test(navigator.platform);
else if (navigator.userAgent)
android = /android/.test(navigator.userAgent);
//useBase64 = iOS;
if (iOS || android) {
window.open('cloud/api/file/retrieve?fileId=' + fileId + '&base64=-1&_access_token=' + this.utilsSvc.getToken(), '_blank');
}
else {
$.ajax({
type: "GET",
headers: { 'Authorization': this.utilsSvc.getToken() },
url: 'cloud/api/file/retrieve',
data: {
'fileId': fileId,
'base64': useBase64 ? '1' : '0'
}
,
xhrFields: {
responseType: 'blob'
}
}).fail(function (jqXHR, textStatus) {
if (jqXHR.status === 501)
alert('Please configure service url first.');
else if (jqXHR.status === 404)
alert('File not found');
else
alert('Retrieving file failed: ' + textStatus + " : " + jqXHR.responseText);
}).done(function (data) {
if (useBase64)
window.open('data:' + that.utilsSvc.getMimeType(fileName) + ';base64, ' + data, '_blank');
else {
let blob = new Blob([data]);
if (window.navigator && window.navigator.msSaveOrOpenBlob)
window.navigator.msSaveOrOpenBlob(blob, fileName);
else {
let link = document.createElement('a');
link.target = '_blank';
link.href = window.URL.createObjectURL(blob);
link.setAttribute("download", fileName);
link.click();
}
}
});
}
}