Why does dotnet run launch 2 processes? - .net-core

When I run my dotnet core 2 app from my PowerShell I always see 2 processes launched.
This is annoying as in Visual Studio 2017 I cannot "reattach" a debugger as there are always 2 processes with the same name "dotnet".
Any way to change this?

dotnet run is a development command that builds the project and queries the project for the actual command to run. It then launches the program described in the program - which may be a dotnet some.dll or someapp.exe depending on the program type.
To work around your issue, run a command like
dotnet bin\Debug\netcoreapp2.0\mapp.dll
directly to avoid process noise.
You can also chain a build command before it so you can rebuild the project on changes and still have the process that runs msbuild terminate:
dotnet build; dotnet bin\Debug\netcoreapp2.0\mapp.dll

Related

How to force Rider to build with dotnet?

My build server is building my .NET6 project with dotnet build. The build fails (MSB3823) there but succeeds on my machine with Rider 2021.3.3. Running dotnet build from the command line gives me the same error, something intentionally changed for .NET Core, and msbuild succeeds. In an effort to diagnose the problem and sooner address future ones like it, how can I force Rider to use dotnet and not msbuild?
(essentially the opposite of this)
Edit: I have also tried checking/unchecking "Use Resharper Build"

Azure Devops BUild scripts Are Restore Build and Test Required

In Azure Devops for a .Net core application.
I have three steps
dotnet restore
dotnet build
dotnet test
But if I simply run dotnet test that forces a restore and build. Is there any reason to have the first two steps?
You can use them as follows:
dotnet restore
dotnet build --no-restore
dotnet test --no-build
In this way, you will speed up your build as it can use result of the previous command.
This is default behavior so you don't need to always run all commands to run dotent test for instance. It is convinient and still possible to opt-out from thah behavior.

VSCode hangs when attempting to build dotnet project

I had been using Visual Studio Code with a netcore 3.1 project without any issues.
After being away for about a week, I tried to continue development. However, when I run the build task from VSCode, the terminal shows
> Executing task: dotnet build /property:GenerateFullPaths=true /consoleloggerparameters:NoSummary <
and hangs indefinitely. Running dotnet build from the console works fine.
How can I use VSCode for debugging again?
This was a general issue with the terminal, and not specific to dotnet.
A temporary fix was to run vscode from the terminal (instead of clicking the desktop icon).
After system upgrades and restarting this problem disappeared.

What dotnet core cli command(or msbuild commands) does Visual Studio use when Building, Rebuilding and Cleaning the Solution?

I want to know the exact dotnet cli commands that Visual Studio uses when I Build/Rebuild and Clean solution in my dotnet core application?
I know that the dotnet core cli was build on top of msbuild so when you run Build/Rebuild or Clean Solution Visual Studio uses
msbuild commands directly and not the ones from dotnet core cli?
Is that correct?
If this is correct I would like to know which msbuild command or commands it uses with the three actions:
Build Solution
Rebuild Solution
Clean Solution
And which dotnet core cli commands would be equivalent to that?
I know from this post(Relationship between the dotnet cli and the new vs2017 msbuild)
that the following commands do the build, rebuild and clean in dotnet and msbuild.
Dotnet cli:
Build: dotnet build
Rebuild: dotnet build --no-incremental
Clean: dotnet clean
Msbuild:
Build: msbuild /t:build
Rebuild: msbuild /t:rebuild
Clean: msbuild /t:clean
I guess this is not all? This is fine but I would like to see what Visual Studio produces for the actions?
And I am wondering if Visual Studio behavior can be changed so it runs dotnet cli commands instead of msbuid?
Research:
I was building a asp.net core web api project in Visual Studio(Visual Studio 2017 Enterprise Version 15.9.11)
I was looking in Visual Studio Output when I Build/Rebuild and Clean the solution but I could not find anything related to
dotnet core cli or msbuild. Then I went to VisualStudio Tools/Option/"Project and Solution"/"Build and Run" and changed the options:
MSBuild project build output verbosity: tried both "Detailed" and "Diagnostics" options
MSBuild project build log file verbosity: tried both "Detailed" and "Diagnostics" options
The outcome was that the log that was produced in the Output window of Visual Studio was huge and it was difficult to find
the exact command which would be used for the actions. I can see msbuild used in many places in the output but it is a little confusing
to find the exact command.
I also saw this question (Does Visual Studio use MSBuild internally, and what is the exact command?)
This answer says that:
Quote:
"It appears that the MSBuild command line options are not specified,
but rather the MSBuild APIs are called within Visual Studio. Unless
you have the Visual Studio source code to reverse engineer, you cannot
get an equivalent command line."
Is that the same case for dotnet core cli msbuild as well?
Any help or clarification on this is appreciated.
I know that the dotnet core cli was build on top of msbuild so when
you run Build/Rebuild or Clean Solution Visual Studio uses msbuild
commands directly and not the ones from dotnet core cli?
For VS2017, I would think the VS IDE calls msbuild.exe directly when Clean, Build and Rebuild.You can easily check this point by Task Manager or Process Monitor.
As for what you mentioned above:It appears that the MSBuild command line options are not specified, but rather the MSBuild APIs are called within Visual Studio.
I think it's right but only for the eariler vs versions(2010,2013). I've tested with VS2010, when doing building-related actions in VS, it doesn't call MSBuild.exe. So the msbuild in VS2010 is not executed as a separate process.
But for VS2017, when I create projects which target .net core, when doing building-related actions(click the build, clean, rebuild button), it obviously calls the msbuild.exe like below:
About what msbuild commands VS actually executes:
Since now the VS2017 calls msbuild.exe to build .net core or .net fx projects.
In my opinion:
For the solution which only contains a project:
Build the Solution=> msbuild xxx.sln /t:build /p:Configuration=xxx;Platform=xxx
Rebuild the Solution=>msbuild xxx.sln /t:rebuild /p:Configuration=xxx;Platform=xxx=>msbuild xxx.sln /t:clean;build /p:Configuration=xxx;Platform=xxx
Clean the Solution=>msbuild xxx.sln /t:clean /p:Configuration=xxx;Platform=xxx=>msbuild xxx.sln /t:clean
I think every time when we click Build button in VS, it will pick the value of Configuration and Platform from this box, because these two parameters are sure to be passed to MSBuild.exe.
Also, one thing we can discover is that IDE has a check process before start build: It will check if the file is out-of-date and then determine if it need to build or not. But this is not what you ask in your issue and it not affects the command you want, so I skip it.
Also, see this page we can find there are some msbuild-related settings here:
So actually I think the command above should add some parameters like:msbuild ... -m:8 -v:M.
In addition: Though I find building-related action in VS will call msbuild.exe directly. I'm not certainly sure that my command above is 100% correct. I'm afraid no one can ensure that except the guys who develop the menu command in VS IDE. So if i misunderstand anything please feel free to correct me:)
And if you just want to get the exactly same thing like what in VS, you can also have a try devenv.exe. This is the only place in official document which confirms the build switch performs the same function as the Build Solution menu command within the integrated development environment (IDE).

setup teamcity with .core, run command fails

I am trying to migrate from Jenkins to Teamcity 2018
So far I have 4 build steps:
Dotnet restore
dotnet build
dotnet run
dotnet test
When teamcity runs 3rd step, it fails.
it tries to run :
dotnet.exe run --project .\Prime.csproj #D:\TeamCity\buildAgent\temp\agentTmp\5d23e7ecee784cabb12baefd7175c67d.rsp
and it gives error
Unhandled Exception: System.FormatException: Unrecognized argument format: '#D:\TeamCity\buildAgent\temp\agentTmp\5d23e7ecee784cabb12baefd7175c67d.rsp'.
I think, it because dotnet cli doesn't accept the # part..
Have anyone seen such error before?
Solution has 2 projects: Prime (the main code) and a tests project with all the tests. The tests project runs just with with 'dotnet test' command
Using dotnet core 2.0 .
So the only way forward which I found is to run .core app in Docker.
So, you need to publish the app to a folder and then put that code into a docker image and then set up your test project to run against docker instance of the app.

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