错误：该进程无法访问文件，因为在.NET Core上通过CLI构建项目时，该文件正被另一个进程使用 [英] Error the process cannot access the file because it is being used by another process while building project by CLI on .NET Core

问题描述

在.NET Core项目上运行 dotnet build 命令时遇到以下错误。

I got following error while running dotnet build command on my .NET Core project.

C:\Program Files\dotnet\sdk\2.1.2\Microsoft.Common.CurrentVersion.targets(4106,5
 ): warning MSB3026: Could not copy "obj\Debug\netcoreapp2.0\Blog-Yantra.dll" to
 "bin\Debug\netcoreapp2.0\Blog-Yantra.dll". Beginning retry 1 in 1000ms. The proc
 ess cannot access the file 'E:\learn\blog\Blog-Yantra\bin\Debug\netcoreapp2.0\Bl
 og-Yantra.dll' because it is being used by another process.  [E:\learn\blog\Blog
 -Yantra\Blog-Yantra.csproj]

我的csproj文件如下：

And my csproj file looks like:

<Project Sdk="Microsoft.NET.Sdk.Web">

  <PropertyGroup>
    <TargetFramework>netcoreapp2.0</TargetFramework>
    <TypeScriptToolsVersion>2.3</TypeScriptToolsVersion>
  </PropertyGroup>

  <ItemGroup>
    <Folder Include="wwwroot\" />
  </ItemGroup>

  <ItemGroup>
    <PackageReference Include="Microsoft.AspNetCore.All" Version="2.0.3" />
    <PackageReference Include="Microsoft.AspNetCore.Mvc" Version="2.0.1" />
    <PackageReference Include="Microsoft.AspNetCore.StaticFiles" Version="2.0.1" />
  </ItemGroup>
  <ItemGroup>
    <DotNetCliToolReference Include="Microsoft.DotNet.Watcher.Tools" Version="2.0.0" />
  </ItemGroup>
</Project>

推荐答案

所以，我在这里提出解决方案。 br>
有了进程运行和锁定程序集，因为我通过dotnet cli进行了 dotnet运行来运行项目，而我做了 Ctrl + c 终止正在运行的进程。但是 Ctrl + c 并没有杀死所有进程，Childs继续运行并锁定程序集，即kestrel服务器仍在同一端口上运行。

So, here I come up with the solution.
There was process running and lock assemblies, since I did dotnet run to run the project through dotnet cli and I did Ctrl + c to terminate the running process. But Ctrl + c didn't killed the all process and Childs continue running and lock assemblies i.e kestrel server was still running on the same port.

要杀死正在运行的kestrel服务器，我必须按照以下命令运行。

To kill the running kestrel server I had run following command.

C:\Users\Kiran>netstat -ano -p TCP | find /I "listening" | find /I "2492"
TCP    127.0.0.1:2492         0.0.0.0:0              LISTENING       820

C:\Users\Kiran>taskkill /F /PID 820
SUCCESS: The process with PID 820 has been terminated.

您需要运行的命令

netstat -ano -p TCP | find /I "listening" | find /I "{your port number}"
taskkill /F /PID {your process ID}

如何手动停止Kestrel服务器

某些参考

如何手动停止Kestrel服务器。在SO上问的问题

未释放端口localhost：5000，从而导致错误System.IO.IOException：无法绑定到地址http://127.0.0.1:5000：地址已在使用中。在github上发布的问题

终止 dotnet运行不会终止子级。在github上发布

terminating dotnet run doesn't terminate child. Issue on github

Windows：如何通过端口杀死进程。博客文章

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