我曾尝试阅读 Microsoft 文档以及 Nuget 和 Dotnet,但无法理解相应的行为。
在与我一起处理 C# 项目时,.csproj
我遇到了以下情况,这是我想要实现的示例:
例如,我正在使用以下.csproj
文件:
<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<ProjectTypeGuids>{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
<Authors>Confluent Inc.;Andreas Heider</Authors>
<Description>Confluent's .NET Client for Apache Kafka</Description>
<Copyright>Copyright 2016-2020 Confluent Inc., Andreas Heider</Copyright>
<PackageProjectUrl>https://github.com/confluentinc/confluent-kafka-dotnet/</PackageProjectUrl>
<PackageLicenseUrl>https://github.com/confluentinc/confluent-kafka-dotnet/blob/master/LICENSE</PackageLicenseUrl>
<PackageIconUrl>https://raw.githubusercontent.com/confluentinc/confluent-kafka-dotnet/master/confluent_logo.png</PackageIconUrl>
<PackageReleaseNotes>https://github.com/confluentinc/confluent-kafka-dotnet/releases</PackageReleaseNotes>
<PackageTags>Kafka;Confluent;librdkafka</PackageTags>
<PackageId>Confluent.Kafka</PackageId>
<Title>Confluent.Kafka</Title>
<AssemblyName>Confluent.Kafka</AssemblyName>
<VersionPrefix>1.4.3</VersionPrefix>
<TargetFrameworks>net45;net46;netcoreapp2.1;netstandard1.3;netstandard2.0</TargetFrameworks>
<AllowUnsafeBlocks>true</AllowUnsafeBlocks>
<GenerateDocumentationFile>true</GenerateDocumentationFile>
<SignAssembly>true</SignAssembly>
<AssemblyOriginatorKeyFile>Confluent.Kafka.snk</AssemblyOriginatorKeyFile>
</PropertyGroup>
<ItemGroup>
<PackageReference Include="librdkafka.redist" Version="1.4.2">
<PrivateAssets Condition="'$(TargetFrameworkIdentifier)' == '.NETFramework'">None</PrivateAssets>
</PackageReference>
<PackageReference Include="System.Memory" Version="4.5.0" />
</ItemGroup>
<ItemGroup>
<PackageReference Include="PeterO.Cbor" Version="3.5.0" />
</ItemGroup>
<ItemGroup Condition=" '$(TargetFramework)' == 'netstandard1.3' ">
<PackageReference Include="System.Console" Version="4.3.0" />
<PackageReference Include="System.Linq" Version="4.3.0" />
<PackageReference Include="System.Runtime.InteropServices" Version="4.3.0" />
<PackageReference Include="System.Runtime.Extensions" Version="4.3.0" />
<PackageReference Include="System.Threading" Version="4.3.0" />
</ItemGroup>
</Project>
正如您在最后看到ItemGroup
的那样Condition=" '$(TargetFramework)' == 'netstandard1.3'
,我想要弄清楚的是 dotnet 是从哪里得到这个论点$(TargetFramework)
的。
顺便说一句,它似乎是变量表示法$(SomeVariable)
(不仅仅是TargetFramework
),我很高兴能理解这些变量是从哪里以及如何被提取出来的。
有什么线索吗?
谢谢!