I have a Xamarin iOS project that used to, but no longer compiles.
The same code, same component and nuget package references no longer compiles.
The error messages are like:
The type or namespace 'xamarin' could not be found. Are you missing an assembly reference?
(Yes, it cannot find Xamarin. I've also had this with Google.Maps and Newtonsoft.Json).
Xamarin studio shows packages with updates available. If I choose to update the package, the build progresses a bit further (or complains about a different missing library).
I don't want to update the packages. The ones we are using are stable for our use and known good.
How do I tell Xamarin Studio that I don't want to update, and in fact, I'd like to continue to use the version that's known to work?
Thanks
How do I tell Xamarin Studio that I don't want to update, and in fact, I'd like to continue to use the version that's known to work?
The simplest approach is to do nothing. Xamarin Studio will not automatically update your NuGet packages. You need to trigger the update yourself.
You can also disable the checking for NuGet package updates in Preferences - NuGet - General.
Finally if you want to make sure that the NuGet packages are not updated then you can put restriction in the packages.config file:
<packages>
<package id="SomePackage" version="2.1.0" allowedVersions="[2,3)" />
</packages>
There is more information on the supported allowedVersions syntax on the NuGet site
However all the above will not fix your build errors if you are getting an error without modifying the NuGet packages.
Related
I created a setup project using Microsoft Visual Studio Installer Projects (0.9.3, this is latest for Visual Studio 2019). After setup is executed it installs Nuget package assemblies that are different from the assemblies generated during build.
Why is it doing that and how can I make it to chose assemblies consistent with build assemblies?
My application is for 4.7.2 framework. Typical example is System.ValueTuple.dll (4.0.2)
Build retrieves assembly from:
C:\Users\.nuget\packages\system.valuetuple\4.5.0\lib\net47\System.ValueTuple.dll
Install retrieves assembly from:
C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework.NETFramework\v4.7.2\Facades\System.ValueTuple.dll
While install based on 4.0.2 creates a concern but works, when I upgrade nuget package to version 4.6 (and assembly to 4.0.3) install switches to using assembly C:\Users\vgdev.nuget\packages\system.valuetuple\4.5.0\ref\net47\System.ValueTuple.dll
If you look closer, you will notice path above has \ref folder and it contains "reference" assembly. Reference assemblies are not meant to be installed and cause errors BadImageformatException.
The build after Nuget package upgrade continues to pull packages from the correct \lib folder and application works fine. So what I want to do is to make installer work consistently with build. Any advice?
Install retrieves assembly from: C:\Program Files (x86)\Reference
Assemblies\Microsoft\Framework.NETFramework\v4.7.2\Facades\System.ValueTuple.dll
Which way do you reference that package? I can only reproduce this issue when I add reference manually.(Right-click project=>Add reference=>Browse...) If you're doing so, please remove that reference, and add that reference back by Nuget Package Manager UI.
My application is for 4.7.2 framework. Typical example is
System.ValueTuple.dll (4.0.2). When I upgrade nuget package to version 4.6 (and assembly to 4.0.3)
I can only find it with latest 4.5.0 here. And I think it contains the assembly version 4.0.3 instead of 4.0.2.
(I guess something corrupts the process when VS recognize your assembly version cause in most machines it displays 4.0.3 while in one machine, it displays 4.0.2, quite strange...)
The build after Nuget package upgrade continues to pull packages from
the correct \lib folder and application works fine. So what I want to
do is to make installer work consistently with build. Any advice?
Cause of the issue:
This strange behavior may have something to do with Setup project. I can reproduce same situation and I found this issue only occurs when I use PackageReference format to manage nuget packages in my application.(.net 4.7.2)
PackageReference format is the new nuget package manage format after VS2017. I'm not sure if the Setup project fully support for it.
Here're two suggestions which may help:
1.I found this issue only occurs when using PackageReference format. So you can try using Packages.config format in your application. And I've checked the setup project can recognize this format well.
Uninstall all PackageReference format packages, and go Tools=>Nuget Packages Manager=>Nuget Package Manager to set the Allow format selection... to true.
Clean all nuget cache and click ok. After that delete bin and obj folders, then restart VS to add those packages back using Packages.config format.
2.If you continue to use PackageReference format. Try excluding the assembly from ref folder, and manually add that from lib folder by Add=>Assembly=>Browse.
Note: Since Setup project may not fully support packageReference format projects, actually I think #1 could be more suitable for your situation. And you can create a new simple project with packages.config format to check if the issue can be resolved by Packages.config format. Hope it helps :)
It seems that the root cause of the problem is the usage of the BuiltProjectOutputGroupDependencies target by visual studio setup projects instead of the ReferenceCopyLocalPathsOutputGroup target (see PackageReferences put ref instead of lib assemblies in the output group used by VS installer projects).
The proposed workaround is to overwrite the BuiltProjectOutputGroupDependencies target at the end in the project file of your main project:
<Target
Name="BuiltProjectOutputGroupDependencies"
DependsOnTargets="$(BuiltProjectOutputGroupDependenciesDependsOn)"
Returns="#(BuiltProjectOutputGroupDependency)">
<ItemGroup>
<BuiltProjectOutputGroupDependency Include="#(ReferenceCopyLocalPaths->'%(FullPath)');
#(ReferenceDependencyPaths->'%(FullPath)');
#(NativeReferenceFile->'%(FullPath)');
#(_DeploymentLooseManifestFile->'%(FullPath)');
#(ResolvedIsolatedComModules->'%(FullPath)');
#(ReferenceComWrappersToCopyLocal->'%(FullPath)')"/>
</ItemGroup>
</Target>
I am trying out Xamarin Forms on Visual Studio for Mac.
When I create a new project, I see VS is trying to add packages to the solution, but every single time- it fails at the same place...
Here is the Package Console output:
https://drive.google.com/open?id=1-KfdWC2hub4YuEOHfJ_LICL86o6zkecytmMAi0emDeQ
On this new project, after the package installer fails, it always fails to build with the default assets:
Is it possible other dev environments are affecting Visual Studio?
Is there a more stable way I can use Xamarin forms on a Mac?
Thanks in advance!
One of the errors I see in your Package Console is:
Could not install package 'Xamarin.Android.Support.v4 23.3.0'. You are
trying to install this package into a project that targets
'MonoAndroid,Version=v2.3', but the package does not contain any
assembly references or content files that are compatible with that
framework.
NuGet looks at your project's target framework and version to see if the NuGet packages are compatible. As far as NuGet is aware your project is targeting MonoAndroid version 2.3. Check what you have selected as the Compile using Android version in the project properties and ensure that it's compatible with the package you want to add.
Also, a "more stable" way to use Xamarin Forms on a Mac is not available unless you want to try Xamarin Studio but that is almost the same as Visual Studio for Mac (which is based on it).
I'm working on a project that uses nuget but does not use package restore. (This is a decision outside of my control by the way, so any answers that involve enabling package restore aren't ones I'll be able to use.)
A handful of projects in the solution (4 out of a total of 34; a WinJS app store project, two ordinary .NET class library, and one of my Azure cloud projects) are reporting this infamous warning:
...packages\Microsoft.Bcl.Build.1.0.13\tools\Microsoft.Bcl.Build.targets(225,5): warning : All projects referencing Valhalla.Consumer.Core.csproj must install nuget package Microsoft.Bcl.Build. For more information, see http://go.microsoft.com/fwlink/?LinkID=317569.
That link assumes that I'll want to turn package restore on. So does every other bit of advice I've managed to find so far on this subject.
I tried disabling Package Restore in Options -> Package Manager -> General settings, by the way. That doesn't help (and even if it did, it would be undesirable - I use package restore in everything else I work on).
I don't really understand why I'm getting this in a solution that doesn't use package restore. As I understand it, the whole point of the package it's asking for is to support package restore. So in a solution in which package restore is not in use, it seems odd for this package to be present.
However, it appears that certain other nuget packages cause you to depend on this. I have a Windows Runtime Component project that uses Microsoft.Bcl, a nuget package that, for some reason, has a dependency on Microsoft.Bcl.Build. (Visual Studio seemed to add the Microsoft.Bcl package for me when I created the project. Presumably it's necessary.) Other projects seem to acquire a dependency on Microsoft.Bcl.Build via the HTTP client libraries.
So apparently, certain common nuget packages appear to force a dependency on Microsoft.Bcl.Build whether or not you're using package restore.
That would be fine if you could eliminate the warning simply by adding the relevant package to all projects that get this warning. But the vexing thing is that even if I add the Microsoft.Bcl.Build package to the consuming components (e.g., my WinJS Window Store app) I still get this warning! (So it continues to complain that I need to install the nuget package even after I have installed it.)
Does anyone know how to eliminate this warning in this situation? Doing what it asks me to do doesn't seem to be sufficient. What's missing?
I had the same issue. Updating the Microsoft.Bcl.Build package from 1.0.13 to 1.0.14 solved my problem.
We recently had the same issue. Using Nuget 2.8, BCL build 1.0.14, BCL 1.1.9, we had a project A using BCL build, that was referenced by another project B.
Short story: Project B compilation gave the mentioned error although the packaged were added to it. The solution was to remove the packages and re-add them. We ended up doing that for both project A and B.
I believe the cause of the problem was a mismatch in versions. The original project referenced BCL 1.1.8 (the latest version when it was created) was while project B automatically used the more recent BCL 1.1.9.
I am not sure if that's relevant but on the first time we added packages using the project->NuGet package manager, and on the 2'nd time we used the NuGet Console (Tools->Nuget->console).
The remove,add caused a distinct difference in the csproj of project B.
the following lines were added:
<Import Project="..\..\..\packages\Microsoft.Bcl.Build.1.0.14\tools\Microsoft.Bcl.Build.targets" Condition="Exists('..\..\..\packages\Microsoft.Bcl.Build.1.0.14\tools\Microsoft.Bcl.Build.targets')" />
I am trying to add a reference to a project in Visual Studio 2012, by using 'Manage Nuget References'. The package is 'Wiki .NET Parser' (version 2.5.2.0).
When I try to add it, I get the below:
Successfully installed 'WikiNetParser 2.5.2.0'.
Successfully uninstalled 'WikiNetParser 2.5.2.0'.
Install failed. Rolling back...
Failed to add reference to 'WikiNetParser'. Please make sure that it is in the Global Assembly Cache.
I have also tried to create a clean, blank console project - But I still get the same problem. Any ideas?
A search on Google returned nothing specific to this component
The package appears to have a malformed manifest. I've reported this issue to the author of the package.
Specifically: The Manifest contains this node:
<frameworkAssemblies>
<frameworkAssembly assemblyName="WikiNetParser" targetFramework=".NETFramework4.0" />
</frameworkAssemblies>
Which tells NuGet to look for the "WikiNetParser" in the Core .Net 4.0 libraries, which of course does not exist. The node can simply be removed and the package should install successfully. If you want to try cracking the package open yourself, you can try using NuGet Package Explorer.
As I add and remove references sometimes I don't always "uninstall" a package which appears like a reference. So it remains "installed" in the Nuget package explorer. It seem like I could really use something that cleans up the .csproj and the packages.config file -- is there something that does this?
This would be useful for both Visual Studio (VS) 2010 and VS 2012.
Uninstalling a package should be done as an explicit gesture.
If you want to know if a particular reference is part of a package, you can check the Path of the reference. If the hint path is something like "..\Packages\.." , you will know that the reference is part of a package.
I'm also looking for a tool to help with cleaning up the packages and at least identify unused Nuget packages for me. For now the manual way to check that a package is used or not is to uninstall the package and compile the project. If everything is still passing that means the package is not used. If things failed you can simply revert the changes in your source control system. You will need to repeat these steps for each package installed in your Visual Studio solution.