It seems to be issue with DotnetDocsTools.LocateProjects which does not set <UseWPF>true</UseWPF> for .NET 6 projects

@kant2002 Thank you for contributing to the docs! We have requirements to code edits that must be addressed, and it fixes those errors the LocateProjects tool is giving you.

First, the repo is split into two areas: .NET Framework and everything else. The article referenced in the issue is a .NET Framework article and thus the code would be written for .NET Framework, not upgraded to .NET 6.

Second, our repo has been redesigned and the .NET Framework code you're working with is an older design from 10+ years ago. With fixing code from these old articles, the code being referenced lives in the dotnet-desktop-guide\samples\snippets\ folder, which is the old-old-old snippet framework. We've upgraded our design to be a lot more cleaner, and when we edit code here it needs to be migrated out of that old dotnet-desktop-guide\samples\snippets\ folder and into a new folder along side the article itself. This structure is documented at https://docs.microsoft.com/en-us/contribute/dotnet/dotnet-contribute#example-folder-structure I'll explain it though to save you time from reading that article, but if it sounds confusing, check out the article because it gives some examples.

In this case the article referencing the code you edited is framework/wpf/advanced/how-to-draw-text-to-a-control-background.md. It's parent folder, framework/wpf/advanced, needs to have (if it doesn't exist) a set of child folders for the code to be migrated to. this is in the following format: snippets/article-name giving you a folder of framework/wpf/advanced/how-to-draw-text-to-a-control-background/. In here a csharp and vb folder is created and the project code is put in there and modified to fix the issue. You end up with two final folders for the code to live in:

framework/wpf/advanced/how-to-draw-text-to-a-control-background/csharp
framework/wpf/advanced/how-to-draw-text-to-a-control-background/vb

I'll close this for now. If you get a chance to get back to this, feel free to reopen this. Thanks again!