Implement PDF Viewer Control in UWP app

This guide goes over the steps to implement the Viewer Control in a UWP application

1. To begin working with ViewerControl, you must have first initialize the Apryse's UWP SDK by calling pdftron.PDFNet.Initialize("your_key") at the initialization of your application.

2. Add WinUI 2 resources to the application

   When using WinUI library it is necessary to call it's resource dictionary and add it to the application's resources otherwise the application might crash with a missing resource (style or theme) not found issue

<Application.Resources>
        <ResourceDictionary>
            <ResourceDictionary.MergedDictionaries>
                <XamlControlsResources xmlns="using:Microsoft.UI.Xaml.Controls"/>
            </ResourceDictionary.MergedDictionaries>
        </ResourceDictionary>
    </Application.Resources>

3. Enable Share Document Feature by adding runtime directives

   In order to use the Share feature, it is necessary to add System.Collections.Generic.List{} directive to the Default.rd file

<Directives xmlns="http://schemas.microsoft.com/netfx/2013/01/metadata">
    <Application>
        <!--
        An Assembly element with Name="*Application*" applies to all assemblies in
        the application package. The asterisks are not wildcards.
        -->
        <Assembly Name="*Application*" Dynamic="Required All" />
        
        
        <!-- Add your application specific runtime directives here. -->
        <Type Name="System.Collections.Generic.List{}" MarshalObject="Required All"/>

    </Application>
    </Directives>

4. Enable support for MS Office Conversion by adding the required resource files to the project. To do this go into the solution explorer, right click your solution, and click Add -> Existing Item.... Go to the UWP SDK folder -> Resources and add the files pdftron_exotic_font_resources.plugin, pdftron_layout_resources_.plugin, and pdftron_smart_substitution.plugin. For each file, right click the file and click properties and change the Build Action to Content.

   For more information on MS Office Conversion, you can look here .

5. Add ViewerControl to a page

   ViewerControl can be easily added to a UWP App page.

<Page
        x:Class="MyUWPApp.MainPage"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:viewer="using:pdftron.PDF.Tools.Controls.Viewer"
        mc:Ignorable="d">

        <viewer:ViewerControl/>
    </Page>

6. Check the ViewerControl sample app

   You can also check a sample project that implements the ViewerControl