问题
I changed the project type I am packaging from .net framework v4.6 to .net standard 2.0, now the build definition is failing in Nuget packager step and I am getting this error message.
[error]The default XML namespace of the project must be the MSBuild XML namespace. If the project is authored in the MSBuild 2003 format, please add xmlns="http://schemas.microsoft.com/developer/msbuild/2003" to the element. If the project has been authored in the old 1.0 or 1.2 format, please convert it to MSBuild 2003 format.
After researching about this error I understand that the NuGet packer step doesn't work on SDK-based csproj formats.
What is the best alternative available? I found the same issue here, but I can not find the command pack within the available commands.
回答1:
While the pack command does not appear in the dropdown, you can enter it manually into the field.
回答2:
This is how I resolved this issue:
1- Add package metadata to .csproj file.
2- Go to project properties -> package and check "Generate NuGet package on build".
3- In Build definition add the following tasks:
a- NuGet Restore:
Set path to solution.
Select Feeds in my NuGet.config as Feeds to use.
Set path to Nuget.config (Usually project root "src\nuget.config").
b- Visual Studio Build:
Set path to solution.
Platform: something like $(BuildPlatform).
Configuration: something like $(BuildConfiguration).
c- Copy and Publish Build Artifacts:
- In contents enter *.nupkg.
- Set Copy Root, Artifact name, and Artifact type.
来源：https://stackoverflow.com/questions/48078195/nuget-packager-the-default-xml-namespace-of-the-project-must-be-the-msbuild-xml