I'm not able to build my project When I upgraded my version of Visual Studio 2019 to the latest.
I'm using Splat 2.0.0 as I am user ACR.UserDialogs 6.5.1 as part of a shared project.
I got the following error message:
.nuget/packages/splat/2.0.0/lib/netstandard1.1/Splat.dll" could not be resolved because it was built against the ".NETPortable,Version=v5.0" framework. This is a higher version than the currently targeted framework ".NETPortable,Version=v4.5,Profile=Profile111".
My installed packages:
Xamarin.Mac Version: 5.10.0.153 (Visual Studio Community)
Xamarin.iOS Version: 12.10.0.153 (Visual Studio Community)
Xamarin Designer Version: 16.1.0.464
Xamarin.Android
Version: 9.3.0.22 (Visual Studio Community)
It's related to the Mono Framework version that this particular version of VS is forcing.
Please downgrade to 8.3.11 and install the minimum required version of mono for that and it will work.
Here's the link to VS:
https://download.visualstudio.microsoft.com/download/pr/be7eb138-bef6-460b-90c6-dacd3de18266/18dac98baf9b79fbba45016f59c0e0b0/visualstudioformac-8.3.11.1.dmg
and here's the link to mono:
http://download.mono-project.com/archive/6.4.0/macos-10-universal/MonoFramework-MDK-6.4.0.194.macos10.xamarin.universal.pkg
Related
When running dotnet build in my project, I have the following error:
/path/to/repo/Toolkit/My.Company.Toolkit.Platform.Android/My.Company.Toolkit.Platform.Android.csproj(91,3): error MSB4019: The imported project "/usr/local/share/dotnet/sdk/7.0.102/Xamarin/Android/Xamarin.Android.CSharp.targets" was not found. Confirm that the expression in the Import declaration "/usr/local/share/dotnet/sdk/7.0.102//Xamarin/Android/Xamarin.Android.CSharp.targets" is correct, and that the file exists on disk.
/path/to/repo/Toolkit/My.Company.Toolkit.Platform.iOS/My.Company.Toolkit.Platform.iOS.csproj(195,3): error MSB4019: The imported project "/usr/local/share/dotnet/sdk/7.0.102/Xamarin/iOS/Xamarin.iOS.CSharp.targets" was not found. Confirm that the expression in the Import declaration "/usr/local/share/dotnet/sdk/7.0.102//Xamarin/iOS/Xamarin.iOS.CSharp.targets" is correct, and that the file exists on disk.
I confirm that /usr/local/share/dotnet/sdk/7.0.102/Xamarin/iOS/Xamarin.iOS.CSharp.targets does not exist.
But I don't know how to install it there.
The reference to Xamarin is defined in the csproj like this <Import Project="$(MSBuildExtensionsPath)\Xamarin\Android\Xamarin.Android.CSharp.targets" />.
When I build from Visual Studio I have no issues. And if I try to re-install Xamarin, it says it is already installed.
I am on MacOS.
[UPDATE]
I uninstalled everything (Visual Studio, SDKs/Runtime, dotnet, etc).
Installed just Visual Studio 2022 for Mac.
➜ ~ dotnet --info
.NET SDK:
Version: 7.0.102
Commit: 4bbdd14480
Runtime Environment:
OS Name: Mac OS X
OS Version: 13.1
OS Platform: Darwin
RID: osx.13-arm64
Base Path: /usr/local/share/dotnet/sdk/7.0.102/
Host:
Version: 7.0.2
Architecture: arm64
Commit: d037e070eb
.NET SDKs installed:
6.0.405 [/usr/local/share/dotnet/sdk]
7.0.102 [/usr/local/share/dotnet/sdk]
.NET runtimes installed:
Microsoft.AspNetCore.App 6.0.13 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 7.0.2 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App]
Microsoft.NETCore.App 6.0.13 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]
Microsoft.NETCore.App 7.0.2 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]
Other architectures found:
None
Environment variables:
Not set
global.json file:
Not found
Learn more:
https://aka.ms/dotnet/info
Download .NET:
https://aka.ms/dotnet/download
Now if I try to build the project in the terminal I still have the same error. But if I try to build it from Visual Studio I have a different error.
I have this error in the build output
Target RazorGenerateComponentDeclaration:
/usr/local/share/dotnet/dotnet exec "/Users/redacted/Library/Caches/VisualStudio/17.0/MSBuild/36265_3/Sdks/Microsoft.NET.Sdk.Razor/build/netstandard2.0/../../tools/netcoreapp3.0/rzc.dll" generate
-s
/Users/redacted/Developer/repositories/bcee/Toolkit/MyCompany.Toolkit.Platform.Web/_Imports.razor
-r
_Imports.razor
-o
/Users/redacted/Developer/repositories/bcee/Toolkit/MyCompany.Toolkit.Platform.Web/obj/Debug/netstandard2.1/RazorDeclaration/_Imports.razor.g.cs
-k
component
-p
/Users/redacted/Developer/repositories/bcee/Toolkit/MyCompany.Toolkit.Platform.Web
-t
obj/Debug/netstandard2.1/MyCompany.Toolkit.Platform.Web.RazorComponents.declaration.json
-v
3.0
-c
Default
--root-namespace
MyCompany.Toolkit.Web
--csharp-language-version
8.0
--generate-declaration
The application to execute does not exist: '/Users/redacted/Library/Caches/VisualStudio/17.0/MSBuild/36265_3/Sdks/Microsoft.NET.Sdk.Razor/build/netstandard2.0/../../tools/netcoreapp3.0/rzc.dll'
/Users/redacted/Library/Caches/VisualStudio/17.0/MSBuild/36265_3/Sdks/Microsoft.NET.Sdk.Razor/build/netstandard2.0/Microsoft.NET.Sdk.Razor.Component.targets(106,5): error : rzc generate exited with code 129.
Done building target "RazorGenerateComponentDeclaration" in project "MyCompany.Toolkit.Platform.Web.csproj" -- FAILED.
Done building project "MyCompany.Toolkit.Platform.Web.csproj" -- FAILED.
Build FAILED.
The tools directory does not exists.
At fisrt, you said:
When I build from Visual Studio I have no issues.
The cause should be when you build from the Visual Studio. The framework your project used is .netstandard 2.0. You can check the project.csproj file and the SDK in the /usr/local/share/dotnet/sdk.
In addition, you can check this case which has the similar error as yours. According to it, if the .net version is not compatible with the xamarin will also get this error. dotnet/sdk/7.0.102 should be the .net 7 which is compatible with the .net maui not the xamarin. So you can't use the dotnet build the project.
You can try to find the right value of the MSBuildExtensionsPath and set it in the android and ios .csproj file according to this case which is about set the project's MSBuildExtensionsPath.
Finally, you can try the solution in this case which has the same error message.
The Xamarin tool chain was built upon Mono, so everything you triggered in VS for Mac is kindly processed by MSBuild for Mono (at Mac terminal you can use msbuild --version to learn more).
dotnet build, however, was designed exclusively for .NET Core based projects, so by default it won't be able to handle Xamarin projects, but only .NET MAUI.
As legacy Xamarin projects are going away soon, you should start to migrate to MAUI as soon as you can,
https://dotnet.microsoft.com/en-us/platform/support/policy/xamarin
I really hope someone here can help me out.
With a Xamarin.Forms application for one of our clients I currently have a major issue with the App freezing on iOS. This started as a random issue last year without a pattern behind it, different iOS models and different iOS versions were showing this issue.
The problem for me at the time was that no diagnostics event was triggered in Visual Studio App Center, so I did not have any error messages or crash logs in order to follow up on the issue. Now since upgrading to iOS 16 I have the problem on my phone as well now and strangely enough, we thought it would always trigger on Sundays, but this is not the case, it is random, and the only way to resolve the issue is to uninstall the app and then it will work for a while.
I basically ruled out all the probable causes from our application code, updated all the Nuget packages and even tried an older XCode version. Still, all of my attempts have gathered no results. From what I was able to glean while debugging, the App halts somewhere in Native Code where the Mono Debugger can not follow, so the iOS Device Log is my only hope to figure this out.
Current behaviour
App launches
All data is correctly pulled from Servers
Start page is properly updated
App remains unresponsive to touch inputs, no errors given
Visual Studio for Mac Information
Visual Studio Community 2022 for Mac
Version 17.3.6 (build 20)
Installation UUID: 88c2a03b-e426-4318-bd27-fe2b69128c38
Runtime
.NET 6.0.5 (64-bit)
Architecture: Arm64
Xamarin Designer
Version: 17.3.0.208
Hash: 0de472ea0
Branch: remotes/origin/d17-3
Build date: 2022-09-22 15:21:44 UTC
Roslyn (Language Service)
4.3.0-3.22312.2+52adfb8b2dc71ed4278debcf13960f2116868608
NuGet
Version: 6.2.1.2
.NET SDK (Arm64)
SDK: /usr/local/share/dotnet/sdk/6.0.401/Sdks
SDK Versions:
6.0.401
6.0.400
6.0.302
MSBuild SDKs: /Applications/Visual Studio.app/Contents/MonoBundle/MSBuild/Current/bin/Sdks
.NET SDK (x64)
SDK Versions:
3.1.423
3.1.422
3.1.421
.NET Runtime (Arm64)
Runtime: /usr/local/share/dotnet/dotnet
Runtime Versions:
6.0.9
6.0.8
6.0.7
.NET Runtime (x64)
Runtime: /usr/local/share/dotnet/x64/dotnet
Runtime Versions:
3.1.29
3.1.28
3.1.27
Xamarin.Profiler
Version: 1.8.0.19
Location: /Applications/Xamarin Profiler.app/Contents/MacOS/Xamarin Profiler
Updater
Version: 11
Xamarin.Android
Version: 13.0.0.0 (Visual Studio Community)
Commit: xamarin-android/d17-3/030cd63
Android SDK: /Users/ban/Library/Developer/Xamarin/android-sdk-macosx
Supported Android versions:
12.1 (API level 32)
12.0 (API level 31)
11.0 (API level 30)
9.0 (API level 28)
13.0 (API level 33)
SDK Command-line Tools Version: 7.0
SDK Platform Tools Version: 33.0.3
SDK Build Tools Version: 33.0.0
Build Information:
Mono: dffa5ab
Java.Interop: xamarin/java.interop/d17-3#7716ae53
SQLite: xamarin/sqlite/3.38.5#df4deab
Xamarin.Android Tools: xamarin/xamarin-android-tools/main#14076a6
Microsoft Build of OpenJDK
Java SDK: /Library/Java/JavaVirtualMachines/microsoft-11.jdk
11.0.12
Android Designer EPL code is available here:
https://github.com/xamarin/AndroidDesigner.EPL
Eclipse Temurin JDK
Java SDK: /Library/Java/JavaVirtualMachines/temurin-8.jdk
1.8.0.302
Android Designer EPL code is available here:
https://github.com/xamarin/AndroidDesigner.EPL
Android SDK Manager
Version: 17.3.0.23
Hash: 965bf40
Branch: remotes/origin/d17-3
Build date: 2022-09-22 15:21:49 UTC
Android Device Manager
Version: 0.0.0.1169
Hash: fafb1d5
Branch: fafb1d5
Build date: 2022-09-22 15:21:49 UTC
Apple Developer Tools
Xcode 14.0.1 (21336)
Build 14A400
Xamarin.Mac
Version: 8.12.0.2 (Visual Studio Community)
Hash: 87f98a75e
Branch: d17-3
Build date: 2022-07-25 20:18:54-0400
Xamarin.iOS
Version: 16.0.0.72 (Visual Studio Community)
Hash: 6756a1146
Branch: release/6.0.4xx-xcode14
Build date: 2022-09-21 08:51:06-0400
Build Information
Release ID: 1703060020
Git revision: f7a6334599543f127e737d6de1f362bbe36cebca
Build date: 2022-09-22 15:19:46+00
Build branch: release-17.3
Build lane: release-17.3
Operating System
Mac OS X 12.6.0
Darwin 21.6.0 Darwin Kernel Version 21.6.0
Mon Aug 22 20:19:52 PDT 2022
root:xnu-8020.140.49~2/RELEASE_ARM64_T6000 arm64
Below is a iPhone Console Log from the application starting, running and also crashing after tapping around on screen for a few seconds. All messages that are obvious to me I already checked via Google, but no real helpful information came out.
iOS Device Log
Due to the length, I published it as a Gist: iOS Device Log
I hope someone can point me in the right direction since we are approaching a major update for the App and we would like to ensure that the App works as intended.
Thank you very much in advance for all the support.
I am using Visual Studio 2019 Version 16.3.7. I assume it is the latest update.
When I try to compile a basic .NET Core 2.2 console application:
...I get the following error:
It was not possible to find any compatible framework version
The specified framework 'Microsoft.NETCore.App', version '2.2.0' was not found.
- The following frameworks were found:
1.0.1 at [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
2.0.9 at [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
2.1.11 at [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
2.1.12 at [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
2.1.13 at [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
3.0.0 at [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
You can resolve the problem by installing the specified framework and/or SDK.
The .NET Core frameworks can be found at:
- https://aka.ms/dotnet-download .
My understanding is that .NET Core 3.0 is backward compatible. Why Visual Studio installer installed all versions of .NET Core except 2.2?
How do I solve this problem?
For whatever reason, .NET Core 2.2 is not installed by the ".NET Core cross-platform development" workload.
Open up the Visual Studio installer then go to the "Individual components" tab and you can install it from there:
In my case was missing x86 .NET Core 2.2.x Platform SDK (Visual Studio .NET 16.4 + .NET Core 3.1 SDK ; xUnit Test Project).
You can try this:
Exist directory 2.2.x in: C:\Program Files (x86)\dotnet\shared\Microsoft.NETCore.App ?
When no, try Download latest 2.2.x SDK for x86 platform from this URL: https://dotnet.microsoft.com/download/dotnet-core/2.2
Install and try ...
For more info about installed SDK and Runtime you can use command: dotnet --info
For those trying to deploy a file to a non-developer machine and you see this error, use the Project -> Publish option with a Folder Profile and update the settings to be "Deployment mode: Self-contained". Then "Publish" it.
This will embed the runtime into the .exe, making it much larger, but also simple to "just work" on a client machine.
You can install x86 .NET Core 2.2.x Platform SDK as #Martin said.
If you do not need x86 version like me, you can also set
<PlatformTarget>AnyCPU</PlatformTarget>
to
<PlatformTarget>x64</PlatformTarget>
in both main project and test project 's .csproj file
to avoid this problem.
Two options are to run the Visual Studio Update application to see if any missing requirements will be installed for you or to install the net core 2.2 SDK manually from https://dotnet.microsoft.com/download/dotnet-core/2.2 (or https://aka.ms/dotnet-download as mentioned in the error message).
.NET Core 2.2.0 is not supported anymore.
Waiting for the .NET 5
I have three versions of .NET Core installed on my machine:
However, both VS2017 and VS 2019 return the following error when I execute dotnet --version command:
PM> dotnet --version
dotnet : Did you mean to run dotnet SDK commands? Please install dotnet SDK from:
I can create a solution targeting .NET Core but when I create a Console App targeting .NET Core, for example, the Debug button is labeled Attach instead of Start as usual, and Start Debugging and Start Without Debugging commands in the Debug menu are disabled.
What I tried so far:
Added "C:\ProgramFiles\dotnet" to system PATH variable.
Modified VS2019 using VS Installer.
Restarted several times.
I did have several other version of .NET Core but uninstalled them since I had no solutions targeting these versions and wanted to clean up.
I only left 2.2.300 and 3.0.100 and when I used VS Installer to modify VS2019 it added SDK 2.1.700.
Any ideas on how to resolve this issue without completely removing Visual Studio and installing from scratch?
Apparently x86 version(s) of .NET Core SDKs must be installed as well. After installing 3.0.100 x86 dotnet --version command works fine and I can build and debug .NET Core projects...
I have a simple project which builds with "dotnet build" and with msbuild from the Visual Studio 2019 Developer prompt, but not from the Visual Studio 2017 prompt or IDE. I would like to understand how msbuild 15 finds the installed SDKs and why they are not up to date, while msbuild 16 in VS 2019 works ok.
It appears that the .NET Core SDKs are not registered with msbuild 15 but I don't know how that registration occurs. I have tried reinstalling the SDK, installing different versions of the SDK, but no luck so far.
Unfortunately just switching to 2019 is difficult because what I really want is to compile a large code base with a build script which assumes 2017 - this is a cut-down repro.
<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<OutputType>Exe</OutputType>
<TargetFramework>netcoreapp2.0</TargetFramework>
</PropertyGroup>
</Project>
Compiling from VS2017 developer prompt:
msbuild foo.csproj /nologo
Build started 5/20/2019 7:22:06 AM.
Project "C:\Users\edwin\Source\Repos\foo\foo.csproj" on node 1 (default targets).
C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\MSBuild\Sdks\Microsoft.NET.Sdk\build\Microsoft.NET.TargetFrame
workInference.targets(112,5): error : The current .NET SDK does not support targeting .NET Core 2.0. Either target .NET Cor
e 1.1 or lower, or use a version of the .NET SDK that supports .NET Core 2.0. [C:\Users\edwin\Source\Repos\foo\foo.csproj]
Done Building Project "C:\Users\edwin\Source\Repos\foo\foo.csproj" (default targets) -- FAILED.
Compiling in same window with "dotnet build" succeeds, as does "msbuild foo.csproj" in the 2019 developer prompt (which uses msbuild 16).
dotnet --info shows
.NET Core SDK (reflecting any global.json):
Version: 2.2.204
Commit: 8757db13ec
Runtime Environment:
OS Name: Windows
OS Version: 10.0.17763
OS Platform: Windows
RID: win10-x64
Base Path: C:\Program Files\dotnet\sdk\2.2.204\
Host (useful for support):
Version: 2.2.5
Commit: 0a3c9209c0
.NET Core SDKs installed:
1.0.3 [C:\Program Files\dotnet\sdk]
2.1.104 [C:\Program Files\dotnet\sdk]
2.1.202 [C:\Program Files\dotnet\sdk]
2.1.402 [C:\Program Files\dotnet\sdk]
2.1.403 [C:\Program Files\dotnet\sdk]
2.1.604 [C:\Program Files\dotnet\sdk]
2.2.204 [C:\Program Files\dotnet\sdk]
I experienced this issue 4 days ago when I was using Visual Studio 2017. And I spent all the days to solve it. After searching, on internet,I realised that it was a versioning issue.
verytime, I tried to create a new project I had this message:
The SDK 'Microsoft.NET.Sdk.Web' specified could not be found.
So, I decided to delete all the .Net Core SDK versions and installed the compatible one as indicated on the download Page. See the image below.
[
After installing it, everything started working fine.