我正在尝试模块化Visual Studio项目文件，但它不起作用。 这适用于带有 .Net 3.5 的 Visual Studio 2008。
如下所示，第一个示例有效，但第二个示例无效。我怎样才能让它工作..？
我是这个话题的新手，可能错过了一些东西。我在阅读第 3 方博客时第一次意识到它，然后在文档中也找到了它。我已经用谷歌搜索了更多帮助，但信息太多，我找不到相关的答案。
主项目文件：
...
<!-- main project file -->
<Import Project="$(MSBuildToolsPath)Microsoft.VisualBasic.targets" />
<Target Name="AfterBuild">
<Message Text="This is a message from the *.vbproj file."/> ... this works
</Target>
</Project>
。但是，如果使用<Import>，在导入的文件中使用相同的<Target>和<Message>，则不起作用。MSBuild 似乎可以正确处理所有内容，但没有任何反应......
主项目文件：
...
<Import Project="$(MSBuildToolsPath)Microsoft.VisualBasic.targets" />
<Import Project="$(MSBuildProjectDirectory)CustomBuildEvents.targets" /> ... new tag
<Target Name="AfterBuild">
<Message Text="This is a message from the *.vbproj file."/> ... this still works
</Target>
</Project>
导入的目标文件：
<?xml version="1.0" encoding="utf-8"?>
<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
<Target Name="AfterBuild">
<Message Text="Hello from the imported file." Importance ="high"/> ... doesn't work
</Target>
</Project>
以及构建输出，Verbosity设置为Diagnostic：
### Halfway through the output, this is the only mention of the imported file. ###
None
CustomBuildEvents.targets ... custom file
My ProjectApplication.myapp
My ProjectSettings.settings
### And then at the end, no mention of the imported file or its message. ###
Done building target "CoreBuild" in project "MsBuildCustomTargetTester.vbproj".
Target "AfterBuild" in file "C:Visual Studio 2008SolutionsMsBuildCustomTargetTesterMsBuildCustomTargetTesterMsBuildCustomTargetTester.vbproj":
Task "Message"
Hello from the *.vbproj file. ... message from main file
Done executing task "Message".
Done building target "AfterBuild" in project "MsBuildCustomTargetTester.vbproj".
Target "Build" in file "c:WINDOWSMicrosoft.NETFrameworkv3.5Microsoft.Common.targets":
Building target "Build" completely.
No input files were specified.
Done building target "Build" in project "MsBuildCustomTargetTester.vbproj".
Done building project "MsBuildCustomTargetTester.vbproj".
Project Performance Summary:
109 ms C:Visual Studio 2008SolutionsMsBuildCustomTargetTesterMsBuildCustomTargetTesterMsBuildCustomTargetTester.vbproj 1 calls
AfterBuild的问题在于它只能定义一次。因此，如果导入它，然后稍后在项目文件中再次定义它，则最后一个定义优先并成为唯一的定义。
要解决此问题，您需要使用更高级的方式来注册事件。假设您使用的是 Visual Studio 2008(为什么？！(，您需要对自定义目标文件使用更高级的语法：
<Project>
<!--
Redefines the original build order, includes the standard targets and
adds your new custom target to the end of the list.
-->
<PropertyGroup>
<BuildDependsOn>
$(BuildDependsOn);
CustomTarget
</BuildDependsOn>
</PropertyGroup>
<CustomTarget>
<!-- Imported after Build -->
<Message Text="Hello from the imported file." Importance ="high"/>
</CustomTarget>
</Project>
还有其他方法可以做到这一点，这些方法在MsBuild 4中引入了任何目标上的BeforeTargets和AfterTargets属性，但是如果我没记错的话，上面的语法也应该适用于Visual Studio 2008附带的MsBuild版本。
另请参阅：
"依赖目标">- 和"后目标"有什么区别？
- https://blogs.msdn.microsoft.com/msbuild/2006/02/10/how-to-add-custom-process-at-specific-points-during-build-method-2/