Building project with WPF UserControl Libraries Misses all references to WPF namespaces.

[NickMercer]

So I've got a large WPF app that has multiple wpf libraries inside of it and I'm trying to write a build script for it. It builds just fine in Visual Studio, but my cake build is giving me a bunch of missing reference issues.

181 missing references to anything built-in to WPF (user control names, InitializeComponent() calls, etc.)
My solution is .Net Framework 4.7.2 with 3 .NET Framework 4.7.2 WPF user control libraries
, some 4.7.2 class libraries, and some .NET Standard 2.0 class libraries.
The other assemblies all build fine, but the 3 WPF user control libraries have these missing reference errors.

[nils-a]

@NickMercer could you add the build script you're using? Maybe this might give someone a hint what the problem might be.

[NickMercer]

Sure, here's the script:

The Build Script:

var target = Argument("target", "FinalizePublish");
var configuration = Argument("configuration", "Release");
var solutionFolder = "./";

var assemblyInfo = ParseAssemblyInfo($"{solutionFolder}Version.cs");
var releaseFolder = $"{solutionFolder}RTIS.IT.Util.WPF/bin/x64/{configuration}/";
var lastOctetIndex = assemblyInfo.AssemblyVersion.LastIndexOf('.');
var version = assemblyInfo.AssemblyVersion.Substring(0, lastOctetIndex);
var outputFolder = $"C:/Users/n.mercer/Desktop/TestReleaseFolder/ITUtil/V.{version}";

Task("Clean")
    .Does(() => {
        DotNetRestore();
        DotNetClean(solutionFolder, new DotNetCleanSettings
        {
            Configuration = configuration
        });
    });

Task("Build")
    .IsDependentOn("Clean")
    .Does(() => {
        DotNetBuild(solutionFolder, new DotNetBuildSettings
        {
            Configuration = configuration
        });
    });

Task("Publish")
    .IsDependentOn("Build")
    .Does(() => {
        if(DirectoryExists(outputFolder))
        {
              throw new Exception("Attempted to overwrite an existing published version of the app. Either you need to increment the version number, or you need to manually delete the release folder for that version.");
        }

        CreateDirectory(outputFolder);
        CopyDirectory(releaseFolder, outputFolder);
        Information(outputFolder);
    });

    Task("FinalizePublish")
        .IsDependentOn("Publish")
        .Does(() => {
            var mapEditorReleaseFolder = "R:/ProjectMapEditor";
            
            var editorVersionFolders = GetSubDirectories(mapEditorReleaseFolder);
            var versionStrings = editorVersionFolders.Select(x => x.GetDirectoryName().Substring(2, x.GetDirectoryName().Length - 2));
            var versions = new List<Version>();
            try
            {
                foreach(var versionString in versionStrings)
                {
                    versions.Add(Version.Parse(versionString));
                }
            }
            catch
            {
                throw new Exception("Map Editor Release folder included an incorrect folder name.");
            }
            
            var maxVersion = versions.Max();
            var lastOctetIndex = maxVersion.ToString().LastIndexOf('.');
            var maxVersionString = maxVersion.ToString().Substring(0, lastOctetIndex);
            var mapEditorMaxVersionReleaseFolder = $"{mapEditorReleaseFolder}/V.{maxVersionString}";

            var mapEditorOutputFolder = $"{outputFolder}/MapEditor";
        
            if(DirectoryExists(mapEditorMaxVersionReleaseFolder) == false)
            {
                throw new Exception("Couldn't find the most recent Map Editor Release to include in the build.");
            }

            CreateDirectory(mapEditorOutputFolder);
            CleanDirectory(mapEditorOutputFolder);
            CopyDirectory(mapEditorMaxVersionReleaseFolder, mapEditorOutputFolder);
            Information("Copied Map Editor Files.");
        });

    RunTarget(target);

[NickMercer]

I'm still not sure what the issue is, but I got this build script working without any changes by updating the WPF solution from .net framework 4.7.2 to .net 6. Looks like it was version related somehow.