Download PDF into device on tapping/clicking link button in Webview using Xamarin Forms

Hi Everyone,

In this post I will gonna be explaining about how to download PDF file into device on tapping/clicking the link button in webview Xamarin Forms.

Please follow the below steps to accomplish above task.

• Create a PCL/NET standard project. In my case I named it as “DownloadPDF”.
• Paste the following code in App.xaml.cs

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using Xamarin.Forms;

namespace DownloadPDF

{

       public partial class App : Application

       {

              public App ()

              {

                     InitializeComponent();

                     MainPage = new NavigationPage(new MainPage());

              }

              protected override void OnStart ()

              {

                     // Handle when your app starts

              }

              protected override void OnSleep ()

              {

                     // Handle when your app sleeps

              }

              protected override void OnResume ()

              {

                     // Handle when your app resumes

              }

       }

}

·         Paste the following code MainPage.xaml

<?xml version="1.0" encoding="utf-8" ?>

<ContentPage xmlns="http://xamarin.com/schemas/2014/forms"

             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"

             xmlns:local="clr-namespace:DownloadPDF"

      Title="Download PDF"

             x:Class="DownloadPDF.MainPage">

    <StackLayout>

        <WebView x:Name="Browser"

                 Source ="http://www.pdfpdf.com/samples.html"

                 Navigating="webOnNavigating"

                 HorizontalOptions="FillAndExpand"

                 VerticalOptions="FillAndExpand"/>

    </StackLayout>

</ContentPage>

              Here, I am giving http://www.pdfpdf.com/samples.html as source. Actually it contains some                - sample PDF files. I will try to download those PDF file(s).

•  Paste the following code MainPage.xaml.cs

            using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

using Xamarin.Forms;

namespace DownloadPDF

{

       public partial class MainPage : ContentPage

       {

              public MainPage()

              {

                     InitializeComponent();

              }

protected void webOnNavigating(object sender, WebNavigatingEventArgs e)

              {

                     if (e.Url.Contains(".pdf"))

                     {

                           // Retrieving the URL

                           var pdfUrl = new Uri(e.Url);

                           // Open PDF URL with device browser to download

                           Device.OpenUri(pdfUrl);

                           // Cancel the navigation on click actions

              // (retains in the same page.)

                           e.Cancel = true;

                     }

              }

       }

}

After then, set Android or iOS project as a startup project, run the application on the respective platforms.

To view full source code, please click here

Output:

Please raise your doubts in the comments section, will back to you with answers.

Thanks for reading the article.