msbuild 失败，缺少类型或命名空间名称

Question

I have a C# project (csproj) and a solution (sln), which I want to build via msbuild.exe .

$ msbuild.exe foo.sln /m /t:Build /p:Configuration="Release"

This fails with several errors like these here:

(CoreCompile target) ->
     AppComboCommand.cs(9,7): error CS0246: The type or namespace name 'EnvDTE' could not be found
(are you missing a using directive or an assembly reference?) [foo.csproj]

These errors go away after I opened the project in Visual Studio 2019 and then build again through command line again. VS seems to generate a few files while opening the project, and I am wondering what I miss here. Is this maybe a dependency problem?

Any help is highly appreciated

Answer 1

EnvDTE is just a vs sdk dll for extend visual studio functionality and it is usually stored in the vs local folder.

First, you should make sure that you have installed the Visual Studio extension development workloads first. If you use Build Tool for VS2019, you should also remember to check it.

Please follow these:

1) If you reference this dll in the local area, please make sure that you have referenced it by Right-click on project--> Add Reference -->reference C:\\Program Files (x86)\\Microsoft Visual Studio\\2019\\Community\\Common7\\IDE\\PublicAssemblies\\envdte.dll .

• This below approach is not recommended, and for vs SDK DLL references, using nuget is risky：

  If you use nuget to install it the EnvDTE which does exist in nuget.org , when you build it from command line, you should run nuget restore MySolution.sln first. MSBuild Command line will not restore the missing packages and it is not its job.

So please download nuget.exe first and then add this in script:

$nuget="xxxxx\nuget.exe(the local path of the nuget.exe)"

$nuget restore `xxxxx\MySolution.sln`

Then execute the build process.

2) I found that you use a powershell script to build the project, so please make sure that you use MSBuild for VS2019 not the one of Net Framework( C:\\Windows\\Microsoft.NET\\Framework64\\v4.0.30319\\MSBuild.exe ).

$msbuild.exe="C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\MSBuild\Current\Bin\MSBuild.exe"

If you install Build Tool for VS2019 , you should use this path:

C:\\Program Files (x86)\\Microsoft Visual Studio\\2019\\BuildTools\\MSBuild\\Current\\Bin\\MSBuild.exe