When I try to run the .NET Core Project on last version of Visual Studio Preview for Mac, I get next error:
The specified framework 'Microsoft.NETCore.App', version '1.0.1' was not found.
- Check application dependencies and target a framework version installed at:
/usr/local/share/dotnet/shared/Microsoft.NETCore.App
- The following versions are installed:
1.1.0
- Alternatively, install the framework version '1.0.1'.
The application was terminated by a signal: SIGQUIT
WARNING: The target process exited without raising a CoreCLR started event. Ensure that the target process is configured to use Microsoft.NETCore.App 1.0.0 or newer. This may be expected if the target process did not run .NET code.
I opened Project Settings, and in the 'Target Framework' Dropdown there is no .NETCoreApp 1.1, only 1.0 (which is not installed)
What should I change in project or Studio configs for project to run successfully? Or I just must wait for VS update?
Thanks for response.
Update your nuget packages i.e Project -> Update Nuget Packages. The Microsoft.NetCore.App package is out of date.
Step 1: setup .net Core
--> https://www.microsoft.com/net/core#macos
--> if you get donet new command not found, try this: ln -s /usr/local/share/dotnet/dotnet /usr/local/bin/
Step 2: update packages
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 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've been using Visual Studio Mac for a little while and have just updated it to the released version. I've also downloaded and installed .NET Core 2.0 Preview 1. From a shell prompt I can generate a new Web API project:
dotnet2 davec$ dotnet --version
2.0.0-preview1-005977
dotnet2 davec$ dotnet new webapi
The template "ASP.NET Core Web API" was created successfully.
This template contains technologies from parties other than Microsoft, see https://aka.ms/template-3pn for details.
Processing post-creation actions...
Running 'dotnet restore' on dotnet2/dotnet2.csproj...
Restore succeeded.
I can build and run that project from the shell. But when I open it in Visual Studio for Mac, the IDE tries and fails to restore:
Errors in dotnet2/dotnet2.csproj
Unable to resolve 'Microsoft.NETCore.App (>= 2.0.0)' for '.NETCoreApp,Version=v2.0'.
Unable to resolve 'Microsoft.NETCore.App (>= 2.0.0)' for '.NETCoreApp,Version=v2.0 (win)'.
Unable to resolve 'Microsoft.NETCore.App (>= 2.0.0)' for '.NETCoreApp,Version=v2.0 (win-x64)'.
Unable to resolve 'Microsoft.NETCore.App (>= 2.0.0)' for '.NETCoreApp,Version=v2.0 (win-x86)'.
NuGet Config files used:
~/.config/NuGet/NuGet.Config
Feeds used:
https://api.nuget.org/v3/index.json
Restore failed for 'Microsoft.NETCore.App (>= 2.0.0)'.
Restore failed.
For the sake of completeness, documenting the answer here following #jmoerdyk's comment:
My Environment:
MacOSX 10.12.4
dotnet version: 2.0.0-preview1-005977
Open the csproj file in a text editor (vi, TextEdit, VS Code)
Modify the Target framework and RuntimeFrameworkVersion to be this:
<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<OutputType>Exe</OutputType>
<TargetFramework>netcoreapp2.0</TargetFramework>
<RuntimeFrameworkVersion>2.0.0-preview1-002111-00</RuntimeFrameworkVersion>
</PropertyGroup>
</Project>
Run nuget restore, build the project and you should be good to go
Visual Studio for Mac 7.1 is compatible with .NET Core 2.0 Preview 2, but it is currently in beta. Select "Check for Updates" from the main menu and switch to "Beta" channel. See Xamarin docs and preview release notes.
Now you can get .NET Core 2.0 from here, and then install pkg. Next step is changing target framework in solution in vs. Have fun!
I have installed Microsoft Visual Studio 2015 Enterprise edition update 3 on my Windows 7 machine.I also installed .Net Core packages from this link:
https://www.microsoft.com/net/core#windows
I rebooted the machine after the installation. Now when I try and create a simple web application it throws errors related to project.json. The following are the errors thrown in Visual Studio 2015:
Severity Code Description Project File Line Suppression State
Error NU1001 The dependency Microsoft.NETCore.App >= 1.0.1 could not be resolved. WebApplication14 C:\WebApplication14\src\WebApplication14\project.json 3
I haves similar errors to all the dependencies in the project.json file. I tried many options mentioned online but it did not resolve the issue. I also tried uninstalling and installing .Net core and no luck. Could you let me know how I could fix this issue.
I was able to resolve the issue. I tried uninstalling and installing .Net core and it did not work. The problem was with the NuGet Cache. The cache is stored in different location and we need to clear it which will help the packages to be restored. Follow these steps:
Go to the directory where nuget.exe has been installed and run these commands:
1) nuget locals all -list
2) nuget locals all -clear
When you run the second command you will get a warning we can just ignore that.After executing these two commands restart Visual Studio and open the project solution and it should work.