AppInstallManager error - UWP

Question

Hello Hello.

I have a sample UWP and the following code is getting error:

private async void Button_ClickAsync(object sender, RoutedEventArgs e)
{
    AppInstallManager appInstallManager = new AppInstallManager();
}

WinUI works well.

Answer 1

Hello @Anderson Rodrigues Cavalcante ,

Welcome to Microsoft Q&A!

The WinUI3 project declares runFullTrust by default, so it worked.

If you want to call AppInstallManager from a UWP project, you need to declare runFullTrust capabilities and use Windows Application Packaging Project to package UWP and fulltrustprocess APP, then execute AppInstallManager in fulltrustprocess.

In your UWP solution, add a “Windows Classic Desktop” project to implement your extension. I am adding a C# Console project. Next you need to add a “Windows Application Packaging Project”.

Now to connect the two projects we need to declare the extension in the package manifest. For this open the Package.appxmanifest file in the Packaging project (“WapProjTemplate1”) in XML editing mode and add the following section within the <Application> node:

 <Extensions>
   <desktop:Extension
     xmlns:desktop="http://schemas.microsoft.com/appx/manifest/desktop/windows10"
     Category="windows.fullTrustProcess"
     Executable="ConsoleApp1\ConsoleApp1.exe" />
 </Extensions>

To invoke the extension, we are using the FullTrustProcessLauncher API from the UWP Desktop Extension SDK. Please add Windows Desktop Extension for the UWP in UWP project

In your UWP app code, add a line of code to invoke the desktop extension component. You can place the code below in the button click event.

if (ApiInformation.IsApiContractPresent("Windows.ApplicationModel.FullTrustAppContract", 1, 0))
{
  await FullTrustProcessLauncher.LaunchFullTrustProcessForCurrentAppAsync();
}

In Console App, Select Target OS version to 10.0.xxxxx.0 , add the code below in Program.cs.

using Windows.ApplicationModel.Store.Preview.InstallControl;
Console.WriteLine("Hello, World!");
string productId = "9WZDNCRFHVFW";  //Microsoft News
string skuId = "0010";
AppInstallManager installManager = new AppInstallManager();
var res = await installManager.StartAppInstallAsync(productId, skuId, false, false);
Console.WriteLine("App installation started.");

Set the WAPP("WapProjTemplate1") as the startup project, then you can debug the code.

Thank you.

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