Package Data Access Layer (DAL)

The Package DAL provides mechanisms for UWP applications to access and manage data related to installed packages, their properties, and dependencies.

PackageInfo Class

Represents a specific installed package on the system.

Methods

GetPackageByName(string packageName)

static PackageInfo GetPackageByName(string packageName)

Retrieves information about a package by its name.

Parameters

  • packageName: System.String
    The name of the package to retrieve.

Returns

PackageInfo: An object representing the found package, or null if not found.

GetAllPackages()

static global::System.Collections.Generic.IEnumerable<PackageInfo> GetAllPackages()

Retrieves a collection of all installed packages.

Returns

global::System.Collections.Generic.IEnumerable<PackageInfo>: An enumerable collection of all installed packages.

Properties

Name
string Name { get; }

Gets the name of the package.

Version
global::Windows.System.Version Version { get; }

Gets the version of the package.

InstallLocation
string InstallLocation { get; }

Gets the installation directory of the package.

PackageDependency Class

Represents a dependency relationship between packages.

Properties

DependentPackageName
string DependentPackageName { get; }

Gets the name of the package that has the dependency.

DependencyPackageName
string DependencyPackageName { get; }

Gets the name of the package that is depended upon.

Example Usage


using Windows.UI.Xaml;
using Windows.UI.Xaml.Controls;
using System;
using System.Collections.Generic;
using System.Linq;

// Assuming PackageInfo and PackageDependency are defined elsewhere or in a common library

public sealed partial class MainPage : Page
{
    public MainPage()
    {
        this.InitializeComponent();
    }

    private void LoadPackageInfo_Click(object sender, RoutedEventArgs e)
    {
        string targetPackageName = "Microsoft.NET.CoreRuntime.1.1"; // Example package name
        PackageInfo package = PackageDAL.PackageInfo.GetPackageByName(targetPackageName);

        if (package != null)
        {
            PackageInfoTextBlock.Text = $"Package Name: {package.Name}\n" +
                                        $"Version: {package.Version}\n" +
                                        $"Install Location: {package.InstallLocation}";
        }
        else
        {
            PackageInfoTextBlock.Text = $"Package '{targetPackageName}' not found.";
        }
    }

    private void ListAllPackages_Click(object sender, RoutedEventArgs e)
    {
        IEnumerable<PackageInfo> allPackages = PackageDAL.PackageInfo.GetAllPackages();
        PackageInfoTextBlock.Text = "All Installed Packages:\n";
        foreach (var pkg in allPackages)
        {
            PackageInfoTextBlock.Text += $"- {pkg.Name} (v{pkg.Version})\n";
        }
    }

    // Dummy implementation for PackageDAL classes for demonstration purposes
    public static class PackageDAL
    {
        public static class PackageInfo
        {
            public static PackageInfo GetPackageByName(string packageName)
            {
                // In a real scenario, this would query the system
                if (packageName.Equals("Microsoft.NET.CoreRuntime.1.1", StringComparison.OrdinalIgnoreCase))
                {
                    return new PackageInfo { Name = "Microsoft.NET.CoreRuntime.1.1", Version = new Windows.System.Version(1, 1, 30612, 0), InstallLocation = "C:\\Program Files\\WindowsApps\\..." };
                }
                return null;
            }

            public static IEnumerable<PackageInfo> GetAllPackages()
            {
                // In a real scenario, this would query the system
                return new List<PackageInfo>
                {
                    new PackageInfo { Name = "Microsoft.NET.CoreRuntime.1.1", Version = new Windows.System.Version(1, 1, 30612, 0), InstallLocation = "C:\\Program Files\\WindowsApps\\..." },
                    new PackageInfo { Name = "Microsoft.VCLibs.140.00", Version = new Windows.System.Version(14.0, 0, 24215, 0), InstallLocation = "C:\\Program Files\\WindowsApps\\..." }
                };
            }

            public string Name { get; set; }
            public Windows.System.Version Version { get; set; }
            public string InstallLocation { get; set; }
        }

        public static class PackageDependency
        {
            public string DependentPackageName { get; set; }
            public string DependencyPackageName { get; set; }
        }
    }
}