Build fails 'WindowsXaml\v15.0\Microsoft.Windows.UI.Xaml.CSharp.targets' was not found.

Description

Build of 7472b43265c1f237f3ba0bd23a2b448c7adc7474 using build.cmd fails out-of-the-box.

Steps to reproduce

Clone repo of the mentioned commit. Try running build.cmd from shell.

Expected behavior

Builds and tests succeed out-of-the-box.

Actual behavior

Builds fails. Seems to be missing something, but what exactly?

D:\oss\testfx [master ≡]> .\Build.cmd
... Perform-Restore: Started.
...     Starting toolset restore...
All packages listed in packages.config are already installed.
D:\oss\testfx\scripts\build\TestFx.targets(4,11): error MSB4226: The imported project "C:\Program Files (x86)\Microsoft
 Visual Studio\2017\Professional\MSBuild\Microsoft\WindowsXaml\v15.0\Microsoft.Windows.UI.Xaml.CSharp.targets" was not
found. Also, tried to find "Microsoft\WindowsXaml\v15.0\Microsoft.Windows.UI.Xaml.CSharp.targets" in the fallback searc
h path(s) for $(MSBuildExtensionsPath) - "C:\Program Files (x86)\MSBuild" . These search paths are defined in "C:\Progr
am Files (x86)\Microsoft Visual Studio\2017\Professional\MSBuild\15.0\bin\MSBuild.exe.Config". Confirm that the path in
 the <Import> declaration is correct, and that the file exists on disk in one of the search paths. [D:\oss\testfx\src\A
dapter\PlatformServices.Universal\PlatformServices.Universal.csproj]
D:\oss\testfx\scripts\build\TestFx.targets(4,11): error MSB4226: The imported project "C:\Program Files (x86)\Microsoft
 Visual Studio\2017\Professional\MSBuild\Microsoft\WindowsXaml\v15.0\Microsoft.Windows.UI.Xaml.CSharp.targets" was not
found. Also, tried to find "Microsoft\WindowsXaml\v15.0\Microsoft.Windows.UI.Xaml.CSharp.targets" in the fallback searc
h path(s) for $(MSBuildExtensionsPath) - "C:\Program Files (x86)\MSBuild" . These search paths are defined in "C:\Progr
am Files (x86)\Microsoft Visual Studio\2017\Professional\MSBuild\15.0\bin\MSBuild.exe.Config". Confirm that the path in
 the <Import> declaration is correct, and that the file exists on disk in one of the search paths. [D:\oss\testfx\src\T
estFramework\Extension.UWP\Extension.UWP.csproj]

Environment

Windows 10, Visual Studio 15.4.4 installed. List of components installed attached:

components.txt

[jayaranigarg]

@spottedmahn : Raised this PR. After this change, any Windows 10 SDK(10240 to 17134) installed on the machine should work fine.

[nietras]

@jayaranigarg sorry I didn’t reply. Installing the workload you mentioned helped, but I had to install the “Windows 10 SDK (10.0.14393.0)” component too. This is why I asked for list of all individual components needed. When I said I had UWP for C# installed I meant I had the component “Windows 10 SDK (10.0.16299.0) for UWP: C#, VB, JS” installed.

It seems a little weird that perhaps the workload installs something that is not listed as an individual component.

Anyway, I am fine with closing this, but perhaps consider updating documentation with regards to what needs to be installed and test it.