Fall back to WebBrowser controls when running as admin

[Andreas-Hjortland]

Fixes #13

PR Type

What kind of change does this PR introduce?

• Bugfix

What is the current behavior?

The current behavior is that if you run an application which contains a WebViewCompatible control as administrator the WebViewCompatible controller will not show up (will just be a blank view). See #13 for more details

What is the new behavior?

With this change, the application will fall back to using WebBrowser (legacy) controls when running the application elevated as administrator so that it the views will still work.

PR Checklist

Please check if your PR fulfills the following requirements:

• [x] Tested code with current supported SDKs
  • I ran the test suite on x86 and x64 both in .net Framweork and in .net core 3.0, but I don't have any windows ARM devices to run the test suite on. Note that you need to run the test as administrator for it to pass (otherwise it will be inconclusive), and that will make all the other WebView tests fail
• [ ] Pull Request has been submitted to the documentation repository instructions. Link:
  • I have not changed any public APIs, so I am not sure it is neccessary to update the documentation
• [ ] Sample in sample app has been added / updated (for bug fixes / features)
  • [ ] Icon has been created (if new sample) following the [Thumbnail Style Guide and templates (https://github.com/windows-toolkit/WindowsCommunityToolkit-design-assets)
  • As mentioned, this does not have any public changes so I am not sure if we need to add a sample
• [X] Tests for the changes have been added (for bug fixes / features) (if applicable)
• [X] Header has been added to all new source files (run build/UpdateHeaders.bat)
• [X] Contains NO breaking changes

Other information

Just to reiterate for the new tests to pass, we need to run the test suite as administrator, and that will unfortunately make the other tests fail since WebView does not work when running as administrator.

[ghost]

Thanks Andreas-Hjortland for opening a Pull Request! The reviewers will test the PR and highlight if there is any merge conflict or changes required. If the PR is approved we will proceed to merge the pull request 🙌

[dnfclas]

All CLA requirements met.

[Andreas-Hjortland]

It would be better if we could support Edge WebView when running as an administrator, but I think this could be a good compromise if that is not possible, or a stopgap solution until we do support running Edge WebView as administrator

[Andreas-Hjortland]

Done, you can check it out at https://github.com/MicrosoftDocs/WindowsCommunityToolkitDocs/pull/336