Uno.dll :: Could not load file or assembly 'Uno, Version=255.255.255.255' - prism

Trying to reference Windows.Devices.Geolocation to use the Geolocator class from a .NET 6 core WinUI desktop head. I suspect - I am not sure - maybe the NetStandard flavor of Uno.dll intending to load here and that is why FileNotFoundException ?
FileNotFoundException: Could not load file or assembly 'Uno, Version=255.255.255.255, Culture=neutral, PublicKeyToken=null'. The system cannot find the file specified.
<PackageReference Include="Uno.WinUI" Version="4.2.6" />
Perhaps a little bit of WinDBG helps anything ? For me nothing.
What is more, it is not just a run time issue, even Visual Studio can't locate the assembly in source :
Procmon reveils, the assembly is found in the right nuget folder but the respective application process log not found:

I made a PR to your GitHub repro, but the steps needed were as follows.
First, the library had to be switched to multi-targeted by changing to <TargetFrameworks> in the .csproj:
<PropertyGroup>
<TargetFrameworks>net6.0;net6.0-windows10.0.19041.0</TargetFrameworks>
</PropertyGroup>
Now the net6.0 target is for all Uno targets and the net6.0-windows10.0.19041.0 is specifically for WinAppSDK on Windows desktop.
Secondly, the Uno.WinUI needs to be referenced only on Uno targets, so:
<ItemGroup Condition="'$(TargetFramework)' != 'net6.0-windows10.0.19041.0'">
<PackageReference Include="Uno.WinUI" Version="4.2.6" />
</ItemGroup>
After these changes, the Windows project will no longer try to access the Geolocator type from Uno.dll and will use the proper Windows SDK Geolocator:

Related

Create nuget package that references referenced .dlls without using .nuspec

Problem: Top level project references MyLibrary nuget which references several vendor.dll files. Vendor.dll files should be able to be referenced by top level project when MyLibrary nuget package is added to top level project but they are not.
When I run the top level project I receive this error:
FileNotFoundException: Could not load file or assembly 'Vendor.A, Culture=neutral, PublicKeyToken=b88d1754d700e49a'. The system cannot find the file specified.
Vendor .dll files are not copied to bin folder.
I hope to find a resolution to this problem that does not require me to create a .nuspec file.
Structure of generated MyLibrary nuget package (observed with Nuget package explorer):
lib
net5.0-windows
Vendor.a.dll
Vendor.b.dll
net5.0-windows7.0
MyLibrary.dll
I do not understand where net5.0-windows7.0 comes from. It does not exist in TFM list referenced below. Also, if net5.0-windows7.0 is for some reason necessary, why does MyLibrary.dll exist there but not the .dlls it depends on?
Looking at the package from within Visual Studio 2019 it appears as follows (vendor dlls do not appear):
Packages
MyLibrary
Compile Time Assemblies
MyLibrary.dll
MyLibrary.csproj:
<Project Sdk="Microsoft.NET.Sdk.WindowsDesktop">
<PropertyGroup>
<TargetFramework>net5.0-windows</TargetFramework>
<UseWPF>true</UseWPF>
<GeneratePackageOnBuild>true</GeneratePackageOnBuild>
</PropertyGroup>
<PropertyGroup>
<AssemblyVersion>1.0.0.1</AssemblyVersion>
<FileVersion>1.0.0.1</FileVersion>
<Version>1.0.0.3</Version>
</PropertyGroup>
<ItemGroup>
<Content Include="$(OutputPath)\Vendor.*.dll">
<Pack>true</Pack>
<PackagePath>lib\$(TargetFramework)</PackagePath>
</Content>
</ItemGroup>
<ItemGroup>
<Reference Include="Vendor.a">
<HintPath>VendorLib\Vendor.a.dll</HintPath>
</Reference>
<Reference Include="Vendor.b">
<HintPath>VendorLib\Vendor.b.dll</HintPath>
</Reference>
</ItemGroup>
TopLevel.csproj
<Project Sdk="Microsoft.NET.Sdk.WindowsDesktop">
<PropertyGroup>
<OutputType>WinExe</OutputType>
<TargetFramework>net5.0-windows</TargetFramework>
<UseWPF>true</UseWPF>
</PropertyGroup>
<ItemGroup>
<PackageReference Include="MyLibrary" Version="1.0.0.3" />
</ItemGroup>
Target Framework Monikers
Similar question
Similar question requiring nuspec
Similar question requiring nuspec
Possibly related issue
I also found an issue about this strange behavior and still did not know where the net5.0-windows7.0 from. Since the issue is still open and the Team does not know it is normal or a strange issue, as my opinion, net5.0-windows7.0 is the special version for wpf project's frameowork of nuget, so you should pack your dlls into such folder of nupkg.
Although this is not the best function, but is a workaround now. You can keep tracking the issue to get the explanation from the Product Team.
Or try my suggestions:
function one
1) change the targetframwork of your nuget project to
<TargetFramework>net5.0-windows7.0</TargetFramework>
As the Team said, net5.0-windows is the same as net5.0-windows7.0. However, they treat them differently in terms of packaging into nuget.
function two
2) still use <TargetFramework>net5.0-windows</TargetFramework>.
change this to:
<ItemGroup>
<Content Include="$(OutputPath)\Vendor.*.dll">
<Pack>true</Pack>
<PackagePath>lib\$(TargetFramework)7.0</PackagePath>
</Content>
</ItemGroup>
Besides, when you finish packing nuget project, please delete nuget caches first or delete all files under C:\Users\xxx\.nuget\packages, then install the new release version of the nuget package into the main project.
vendor is my custom nuget project name.

Visual Studio New project wont run tests

Visual Studio 2019 is not detecting or discovering NUNit nor MSTest unit tests at all. I installed it fresh just a week ago. The MS guide here https://learn.microsoft.com/en-us/visualstudio/test/getting-started-with-unit-testing?view=vs-2019&tabs=mstest does not work.
A few threads hold possible solutions, but none that I've tried helped have helped. I'm new to C# so much of the steps have taken a long time to figure out, but while my application is progressing nicely I really want to work and learn in a TDD style.
Even if a create a new blank MSTest project, with no application code or libs in the solution at all, the example/template project does not work, so I'm missing something big someplace. (I have .NET Core SDKs installed - my intent is to target macOS and linux at a future point.)
<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<TargetFramework>netcoreapp3.1</TargetFramework>
<IsPackable>false</IsPackable>
<LangVersion>latest</LangVersion>
</PropertyGroup>
<ItemGroup>
<PackageReference Include="nunit" Version="3.13.0" />
<PackageReference Include="NUnit3TestAdapter" Version="3.17.0" />
</ItemGroup>
</Project>
Threads I have tried: Tests not running in Test Explorer Why will Visual Studio 2019 will not run my unit tests? Visual Studio 2019 Test Explorer puts all tests under "Not Run Tests"
If I create a project targeting .NET 4.7 all is good, it's when I want to target Core that I'm unstuck, if that helps.
Stuck again
I had to install a component called "NUnit 3", https://marketplace.visualstudio.com/items?itemName=NUnitDevelopers.NUnitTemplatesforVisualStudio worked for a moment... but when I added a testcase, it all broke again.
Did the nuget package updates, still not working.
I cloned. from git this project https://github.com/dotnet/samples/tree/master/core/getting-started/unit-testing-using-nunit
And it does not work either.
I then re-installed 2019, and emailed my project to a friend, who merely removed the nunit nuget modules, added them back and then it worked for him, but the project he sent me back did not work. Module versions unchanged
I opened the same project in the Microsoft developer VM/iso image and the project works just fine. so it's my environment that is incompatible with nunit somehow. Is there a way to see some traces?
Changed the installation drive from D: to C: I get this error now
Testhost process exited with error: A fatal error occurred, the required library hostfxr.dll could not be found.
If this is a self-contained application, that library should exist in [C:\Users\zapho\src\c#\tutorials\working\ConsoleApp1\ConsoleApp1\NUnit.Tests2\bin\Debug\netcoreapp3.1\].
If this is a framework-dependent application, install the runtime in the default location [C:\Program Files\dotnet] or use the DOTNET_ROOT environment variable to specify the runtime location.
. Please check the diagnostic logs for more information.
Testhost process exited with error: A fatal error occurred, the required library hostfxr.dll could not be found.
If this is a self-contained application, that library should exist in [C:\Users\zapho\src\c#\tutorials\working\ConsoleApp1\ConsoleApp1\NUnit.Tests2\bin\Debug\netcoreapp3.1\].
If this is a framework-dependent application, install the runtime in the default location [C:\Program Files\dotnet] or use the DOTNET_ROOT environment variable to specify the runtime location.
. Please check the diagnostic logs for more information.
You need to add the Microsoft.NET.Test.Sdk NuGet package to your solution to run tests in Visual Studio.
Modify your project file,
<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<TargetFramework>netcoreapp3.1</TargetFramework>
<IsPackable>false</IsPackable>
<LangVersion>latest</LangVersion>
</PropertyGroup>
<ItemGroup>
<PackageReference Include="nunit" Version="3.13.0" />
<PackageReference Include="NUnit3TestAdapter" Version="3.17.0" />
<PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.9.1" />
</ItemGroup>
</Project>
Fixed it by eventually setting environment variable
DOTNET_ROOT=D:\Program Files\dotnet\
as per an answer
https://stackoverflow.com/a/61453119/337598

How should I include Package References in a VSIX project

My solution creates a Visual Studio Package from multiple projects, using multiple NuGet packages.
All of the Nuget packages are specified in the project files using PackageReference (rather than the older packages.config file). I am using Visual Studio 2019.
I have had a problem, that the DLLs referenced by NuGet Packages are not included in the VSIX installation.
There is a solution to this problem, described in this article by Daniel Cazzulino, by adding the following code to the project file:
<PropertyGroup>
<GetVsixSourceItemsDependsOn>$(GetVsixSourceItemsDependsOn);IncludeNuGetResolvedAssets</GetVsixSourceItemsDependsOn>
</PropertyGroup>
<Target Name="IncludeNuGetResolvedAssets" DependsOnTargets="ResolveNuGetPackageAssets">
<ItemGroup>
<VSIXCopyLocalReferenceSourceItem Include="#(ReferenceCopyLocalPaths)" />
</ItemGroup>
</Target>
This does work, but it blows up the size of the installation from about 20MB to about 40MB.
The installation now includes a lot of PDB files, which I don't really need.
More significantly, it brings in about 46MB of Visual Studio DLLs which are not necessary, because they are part of Visual Studio.
Is there a better way to ensure that the referenced NuGet packages are included in the VSIX, without inflating the installation with these other files?
You can use a simple script like this:
<Target Name="IncludeNuGetPackageReferences" AfterTargets="GetVsixSourceItems">
<ItemGroup>
<VSIXSourceItem Include="#(ReferenceCopyLocalPaths)" Condition="'%(ReferenceCopyLocalPaths.NuGetPackageId)' == 'Newtonsoft.Json'" />
<VSIXSourceItem Include="#(ReferenceCopyLocalPaths)" Condition="'%(ReferenceCopyLocalPaths.NuGetPackageId)' == 'xxx'" />
... </ItemGroup>
</Target>
You can specify what assemblies should be included into .vsix . And it won't copy the unnecessary VS assemblies after tests in my machine. Hint from smourier, thanks to him.
Hope it helps:)

Reference system nuget from .net standard library

I tried adding some standard nugets to my .Net standard 2.0 library project. But when compiling I get the following type of errors:
The type 'IDisposable' exists in both 'System.Runtime, Version=4.1.0.0,
Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' and
'netstandard, Version=2.0.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51'
and
Predefined type 'System.Object' is not defined or imported
Here is my project file:
<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<TargetFramework>netstandard2.0</TargetFramework>
</PropertyGroup>
<ItemGroup>
<PackageReference Include="System.Net.WebSockets" Version="4.3.0" />
<PackageReference Include="System.Threading.Tasks.Dataflow" Version="4.7.0" />
</ItemGroup>
</Project>
Both nugets declare support for .Net Standard. I used VS 15.3 preview 2.
Is there some magic setting for .Net Standard 2.0 libraries I need to be aware of? What do I need to do to get a .Net standard 2.0 library compiling?
This happens due to a bug in the conflict resolution targets / infrastructure that is fixed in current 2.0.0-preview2 builds. These aren't included in VS 2017 15.3 preview 2.0 and need to be installed separately (e.g. from the links in https://github.com/dotnet/cli/tree/release/2.0.0).
Note that VS 2017 15.3 now uses an "SDK resolver" that looks for a global.json in the opened project and uses the SDK version it resolves to (or latest) instead of the bundled SDKs.

TransformXml task could not be loaded from Microsoft.Web.Publishing.Tasks.dll

Has anyone seen this error and know how to fix it?
The "TransformXml" task could not be loaded from the assembly C:\Program Files (x86)\MSBuild\Microsoft\VisualStudio\v11.0\Web\Microsoft.Web.Publishing.Tasks.dll.
Could not load file or assembly 'file:///C:\Program Files (x86)\MSBuild\Microsoft\VisualStudio\v11.0\Web\Microsoft.Web.Publishing.Tasks.dll' or one of its dependencies. The system cannot find the file specified.
Confirm that the declaration is correct, that the assembly and all its dependencies are available, and that the task contains a public class that implements Microsoft.Build.Framework.ITask.
I read elsewhere that the problem is when you don't have SQL Server installed. But I do have SQL Express 2012 x64 installed with SP1. I am also running VS 2013 Professional.
I have ran this exact same solution in VS 2012 express with no problems.
The answers provided by Dai Bok and emalamisura work fine as long as you use Visual Studio 2012.
For VS 2013 this fails as well. In order to make this work with all versions of Visual Studio you should:
Open the project file (.csproj) of the project failing to load
Search for <Import Project="$(MSBuildExtensionsPath)\Microsoft\VisualStudio\v10.0\Web\Microsoft.Web.Publishing.targets" />
Change it to <Import Project="$(MSBuildExtensionsPath)\Microsoft\VisualStudio\v$(VisualStudioVersion)\Web\Microsoft.Web.Publishing.targets" />
Reload the project
That will set the correct version of Visual Studio dynamically and properly.
To get mine to work, I just copied my v10.0 folder and renamed it to v11.0, and things seems to work well from then on. That's the quick fix for now.
As this is probably not the best solution, and although it works, I was going to try installing the Microsoft Windows SDK for Windows 7 and .NET Framework 4 Windows SDK for Windows 7 and .NET Framework 4, but it is taking to long to download.
To fix the issue,
Find the Visual studio Installer in your computer
Click or tap to start the installer, and then select Modify.
From the Individual Components screen, select Asp.net and web development tools and then select Modify/Install.
This solved the issue as it creates the dll's in the mentioned path.
I've been combating this problem on our build server for several days, so I figured I'd document the resolution I came to. First, my build server has the web publishing extensions installed. I can use the TransformXml task to my heart's content inside of a web application project.
To use it outside of a web application project, I tried to add the UsingTask element to my project and point it to the right place using ms build properties (as Benjamin demonstrated). However, they weren't there on my build server (those with easy access to the file system of their build server can probably skip this and just install the relevant package to Visual Studio). I even went so far as to hard code visual studio versions, but it always dropped that error on me.
I finally gave up, pulled the DLLs from my local PC:
C:\Program Files (x86)\MSBuild\Microsoft\VisualStudio\v12.0\Web\Microsoft.Web.Publishing.Tasks.dll
C:\Program Files (x86)\MSBuild\Microsoft\VisualStudio\v12.0\Web\Microsoft.Web.XmlTransform.dll
I uploaded them to source control and added that folder to my build's workspace (Edit Build Definition -> Source Settings -> Source Control Folder). From there, I don't even need to reference the folder -- here's what my UsingTask looks like:
<UsingTask TaskName="TransformXml" AssemblyFile="Microsoft.Web.Publishing.Tasks.dll" />
Now I can use the TransformXml task to my heart's content from any project.
For VS2019
<UsingTask TaskName="TransformXml" AssemblyFile="$(MSBuildExtensionsPath32)\Microsoft\VisualStudio\v$(MSBuildToolsVersion
I replaced MSBuildToolsVersion with VisualStudioVersion.
Because there are only v12.0, v14.0 and v15.0 in my VisualStudio folder, I edit my project file and change the reference path from v10.0 to v14.0. Then the project builds successfully.
Before:
<UsingTask TaskName="TransformXml" AssemblyFile="$(MSBuildExtensionsPath)\Microsoft\VisualStudio\v10.0\Web\Microsoft.Web.Publishing.Tasks.dll" />
After:
<UsingTask TaskName="TransformXml" AssemblyFile="$(MSBuildExtensionsPath)\Microsoft\VisualStudio\v14.0\Web\Microsoft.Web.Publishing.Tasks.dll" />
Solutions provided seem to work for using VS as an IDE, but if you use DotnetCore via CLI or on a unix based system this does not work.
I found that the following seem to work
<PropertyGroup>
<XmlTransformDllPath Condition="'$(XmlTransformDllPath)' == '' AND '$(MSBuildRuntimeType)' == 'core'">$(MSBuildSDKsPath)/Microsoft.NET.Sdk.Publish/tools/net5.0/Microsoft.NET.Sdk.Publish.Tasks.dll</XmlTransformDllPath>
<XmlTransformDllPath Condition="'$(XmlTransformDllPath)' == '' AND '$(MSBuildRuntimeType)' != 'core'">$(MSBuildSDKsPath)/Microsoft.NET.Sdk.Publish/tools/net472/Microsoft.NET.Sdk.Publish.Tasks.dll</XmlTransformDllPath>
<XmlTransformDllPath Condition="!Exists($(XmlTransformDllPath))">$(MSBuildExtensionsPath32)\Microsoft\VisualStudio\v$(VisualStudioVersion)\Web\Microsoft.Web.Publishing.Tasks.dll</XmlTransformDllPath>
</PropertyGroup>
<UsingTask TaskName="TransformXml" AssemblyFile="$(XmlTransformDllPath)" />
This solution takes into account netcore, full .net
For some reason MSBuildSDKsPath and MSBuildExtensionsPath32 are different on windows when using CLI vs VS2019
CLI:
MSBuildSDKsPath = C:\Program Files\dotnet\sdk\5.0.103\Sdks
MSBuildExtensionsPath32 = C:\Program Files\dotnet\sdk\5.0.103
Vs2019
MSBuildSDKsPath = C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\MSBuild\Sdks
MSBuildExtensionsPath32 = C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\MSBuild
Which on my Mac returns /usr/local/share/dotnet/sdk/5.0.201
Only problem I see is with the tools/net5.0 part of the name which changes ever release
Also created https://github.com/dotnet/sdk/issues/16469 and answers this on The "TransformXml" task was not found (error MSB4036) on TeamCity build
The correct answer to this is to unload the project in question and then edit the csproj file, look for an entry where they are referencing the 10.0 path and change it to point to 11.0 instead.
You need two things to make it work:
1) Install Visual Studio Build Tools (You don't need the whole Visual Studio, only the VS Build Tools) with selected "Web development build tools" option on your build server
https://www.visualstudio.com/pl/thank-you-downloading-visual-studio/?sku=BuildTools&rel=15
2) Ensure that path to Microsoft.Web.Publishing.Tasks.dll is correct
<UsingTask TaskName="TransformXml" AssemblyFile="$(MSBuildExtensionsPath32)\Microsoft\VisualStudio\v$(MSBuildToolsVersion)\Web\Microsoft.Web.Publishing.Tasks.dll" />
For me it started working just by adding reference to the NuGet package MSBuild.Microsoft.VisualStudio.Web.targets v14.0.0.3
Even no need to add UsingTask element to the project file as it mentioned by the package author
https://github.com/pdonald/nuget-webtargets
Just install the NuGet package. The package automatically sets the
$(VSToolsPath) property to use the targets file in the tools folder.
And then I was able to use TransformXml and other tasks, defined in the package, for instance to transform app.config
<Target Name="app_config_AfterCompile" AfterTargets="AfterCompile" Condition="Exists('app.$(Configuration).config')">
<!--Generate transformed app config in the intermediate directory-->
<TransformXml Source="app.config" Destination="$(IntermediateOutputPath)$(TargetFileName).config" Transform="app.$(Configuration).config" />
<!--Force build process to use the transformed configuration file from now on.-->
<ItemGroup>
<AppConfigWithTargetPath Remove="App.config" />
<AppConfigWithTargetPath Include="$(IntermediateOutputPath)$(TargetFileName).config">
<TargetPath>$(TargetFileName).config</TargetPath>
</AppConfigWithTargetPath>
</ItemGroup>
</Target>
Just in case someone is using an SDK-style csproj, you can achieve this without having to install Visual Studio on the build server.
First you should install the SlowCheetah nuget package to your project. Once you install it, you'll see the following in your SDK-style project.
<PackageReference Include="Microsoft.VisualStudio.SlowCheetah" Version="3.2.20">
<PrivateAssets>all</PrivateAssets>
<IncludeAssets>runtime; build; native; contentfiles; analyzers</IncludeAssets>
</PackageReference>
Then make sure you add the GeneratePathProperty="true" attribute (see below). This is very important for the next part because it'll help you grab the path of where the nuget package is restored on your machine. George Dangl explains it in his article here.
<PackageReference Include="Microsoft.VisualStudio.SlowCheetah" Version="3.2.20" GeneratePathProperty="true">
<PrivateAssets>all</PrivateAssets>
<IncludeAssets>runtime; build; native; contentfiles; analyzers</IncludeAssets>
</PackageReference>
Import the SlowCheetah targets into your project:
<Import Project="$(PkgMicrosoft_VisualStudio_SlowCheetah)\build\Microsoft.VisualStudio.SlowCheetah.targets" />
You can now use an target command (in this case after publish) to apply some custom transformations. If you need to, you can always hard-code the file names below instead of using the variables in the below example.
<Target Name="AfterPublishs" AfterTargets="Publish">
<TransformTask Source="Web.config" Transform="Web.$(Configuration).MyCustomTransformFile.config" Destination="$(PublishDir)\Web.config" />
</Target>
If you haven't used SlowCheetah before, I recommend checking it out. They have a Visual Studio extension that will make it easier for you to preview transform files.

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