PowerShell Snippet To Find CSPROJ Files with Particular Package Reference

ContainsPackageReference.ps1

[string[]]$ReferenceAssemblies =
"System.Collections.Concurrent",
"System.IO.FileSystem",
"System.Linq",
"System.Linq.Parallel",
"System.Runtime.Extensions",
"System.Xml",
"System.Xml.Linq",
"System.Xml.ReaderWriter",
"System.Xml.XDocument"

Add-Type @'
using System;
using System.IO;
using System.Linq;
using System.Xml.Linq;

public static class MsBuildProjectEvaluator
{
    public static string[] GetProjectsWithPackageReferenceTo(string targetDirectory, string packageReference)
    {
        return
            Directory
                .EnumerateFiles(targetDirectory, "*.csproj", SearchOption.AllDirectories)
                .AsParallel()
                .Where(projectFile => ProjectContainsPackageReference(projectFile, packageReference))
                .ToArray();
    }

    public static bool ProjectContainsPackageReference(string projectFile, string packageName)
    {
        XNamespace msbuildNS = @"http://schemas.microsoft.com/developer/msbuild/2003";

        var projXml = XDocument.Load(projectFile);
        bool containsPackageReference =
            projXml
                .Descendants(msbuildNS + "PackageReference")
                .Any(packageReference =>
                        packageReference
                        .Attribute("Include")
                        .Value
                        .Equals(packageName, StringComparison.InvariantCultureIgnoreCase)
                    );
        return containsPackageReference;
    }
}
'@ -ReferencedAssemblies $ReferenceAssemblies