c# - 每次在我的 VS 2008 解决方案中重建项目

Question

我在 VS 2008 中有一个 C# 项目，每次我构建解决方案时都会重新构建该项目，即使此项目及其任何依赖项中的任何内容都未更改。这导致了一个巨大的问题，因为解决方案非常大(>100 个项目)，而这个项目在依赖链中非常低，所以它现在导致大多数其他项目也重建，而重建本不应该有有必要。 (我正在做“构建解决方案”而不是“重建解决方案”。)

我知道这个项目是罪魁祸首，因为我将“MSBuild 项目构建输出冗长”设置为“诊断”。然后，我两次构建解决方案而不更改构建之间的任何内容。在第二个构建中，这是正在重建的解决方案中的第一个项目，通过注意到 Csc.exe 正在执行来确定。

这是我在构建输出中看到的内容:

------ Build started: Project: COS.BusinessEntities, Configuration: Debug Any CPU ------

...

Target "CoreCompile" in file "c:\WINDOWS\Microsoft.NET\Framework\v3.5\Microsoft.CSharp.targets":
 Building target "CoreCompile" completely.
 Output file "bin\Debug\COS.BusinessEntities.XML" does not exist.
 Task "Csc"
  Command:
  c:\WINDOWS\Microsoft.NET\Framework\v3.5\Csc.exe /noconfig /nowarn:1591,1573,0219,0168,1572,1587,1570,1701,1702 /errorreport:prompt /warn:4 /doc:bin\Debug\COS.BusinessEntities.XML /define:DEBUG;TRACE ...

所以看起来当它到达 COS.BusinessEntities 项目时，它没有找到“bin\Debug\COS.BusinessEntities.XML”文件。但是我已经验证了这个文件在第一次构建之后确实存在，而且我不相信它会被删除并重新创建(但我愿意接受有关如何验证这一点的建议)。我在进行第二次构建时尝试查看该文件夹，但我从未看到它消失。

另一个线索是此行为始于特定的 checkin ，其中开发人员向项目添加了两个文件:OptionsEntities.edmx 文件和 OptionsEntities.Designer.cs。 COS.BusinessEntities.prj 文件中还添加了以下内容:

  <Compile Include="Options\Entities\OptionsEntities.Designer.cs">
   <AutoGen>True</AutoGen>
   <DesignTime>True</DesignTime>
   <DependentUpon>OptionsEntities.edmx</DependentUpon>
  </Compile>

  ...

  <EntityDeploy Include="Options\Entities\OptionsEntities.edmx">
   <Generator>EntityModelCodeGenerator</Generator>
   <LastGenOutput>OptionsEntities.Designer.cs</LastGenOutput>
  </EntityDeploy>

显然，这些条目对于 edmx 文件是必需的，但我想知道是否某些值不正确，从而导致此行为。我确定这是罪魁祸首，就好像我得到了以前的变更集一样，这个问题就消失了；在没有代码更改后构建解决方案时，项目不会自行重建。

感谢任何帮助!这几天我一直在绞尽脑汁!

谢谢，

克里斯

编辑:从项目中删除 XML 文档 XML 文件后，我仍然遇到同样的问题，但这是新的输出:

Target "CoreCompile" in file "c:\WINDOWS\Microsoft.NET\Framework\v3.5\Microsoft.CSharp.targets":
  Building target "CoreCompile" completely.
  Input file "C:\Documents and Settings\<my username>\Local Settings\Temp\tmp6D36.tmp" is newer than output file "obj\Debug\COS.BusinessEntities.pdb".
  Task "Csc"
    Command:
    c:\WINDOWS\Microsoft.NET\Framework\v3.5\Csc.exe /noconfig /nowarn:1591,1573,0219,0168,1572,1587,1570,1701,1702 /errorreport:prompt /warn:4 /define:DEBUG;TRACE ...

...而且那个临时文件每次都不一样!哎呀!现在尝试什么？

编辑 2:以下是构建输出的相关部分，与此临时文件相关(这些从 BusinessEntities 项目开始):

Target "SplitResourcesByCulture" in file "c:\WINDOWS\Microsoft.NET\Framework\v3.5\Microsoft.Common.targets":
  Task "Warning" skipped, due to false condition; ('@(ResxWithNoCulture)'!='') was evaluated as (''!='').
  Task "Warning" skipped, due to false condition; ('@(ResxWithCulture)'!='') was evaluated as (''!='').
  Task "Warning" skipped, due to false condition; ('@(NonResxWithCulture)'!='') was evaluated as (''!='').
  Task "Warning" skipped, due to false condition; ('@(NonResxWithNoCulture)'!='') was evaluated as (''!='').
  Task "AssignCulture"
    Culture of "" was assigned to file "C:\Documents and Settings\<my username>\Local Settings\Temp\tmp6D36.tmp".
    Culture of "" was assigned to file "C:\Documents and Settings\<my username>\Local Settings\Temp\tmp6D38.tmp".
    Culture of "" was assigned to file "C:\Documents and Settings\<my username>\Local Settings\Temp\tmp6D37.tmp".
  Done executing task "AssignCulture".
Done building target "SplitResourcesByCulture" in project "COS.BusinessEntities.csproj".
Target "CreateManifestResourceNames" in file "c:\WINDOWS\Microsoft.NET\Framework\v3.5\Microsoft.CSharp.targets":
  Task "CreateCSharpManifestResourceName"
    Root namespace is 'COS.BusinessEntities'.
    Resource file 'C:\Documents and Settings\<my username>\Local Settings\Temp\tmp6D36.tmp' doesn't depend on any other file.
    Resource file 'C:\Documents and Settings\<my username>\Local Settings\Temp\tmp6D36.tmp' gets manifest resource name 'COS.BusinessEntities.tmp6D36.tmp'.
    Resource file 'C:\Documents and Settings\<my username>\Local Settings\Temp\tmp6D38.tmp' doesn't depend on any other file.
    Resource file 'C:\Documents and Settings\<my username>\Local Settings\Temp\tmp6D38.tmp' gets manifest resource name 'COS.BusinessEntities.tmp6D38.tmp'.
    Resource file 'C:\Documents and Settings\<my username>\Local Settings\Temp\tmp6D37.tmp' doesn't depend on any other file.
    Resource file 'C:\Documents and Settings\<my username>\Local Settings\Temp\tmp6D37.tmp' gets manifest resource name 'COS.BusinessEntities.tmp6D37.tmp'.
  Done executing task "CreateCSharpManifestResourceName".
  Task "CreateCSharpManifestResourceName" skipped, due to false condition; ('%(EmbeddedResource.ManifestResourceName)' == '' and '%(EmbeddedResource.WithCulture)' == 'true' and '%(EmbeddedResource.Type)' == 'Non-Resx') was evaluated as ('' == '' and 'false' == 'true' and 'Non-Resx' == 'Non-Resx').
Done building target "CreateManifestResourceNames" in project "COS.BusinessEntities.csproj".

然后再往下一点:

Target "_GenerateCompileInputs" in file "c:\WINDOWS\Microsoft.NET\Framework\v3.5\Microsoft.Common.targets":
  Task "Warning" skipped, due to false condition; ('@(ManifestResourceWithNoCulture)'!='' and '%(ManifestResourceWithNoCulture.EmittedForCompatibilityOnly)'=='') was evaluated as (''!='' and ''=='').
  Task "Warning" skipped, due to false condition; ('@(ManifestNonResxWithNoCultureOnDisk)'!='' and '%(ManifestNonResxWithNoCultureOnDisk.EmittedForCompatibilityOnly)'=='') was evaluated as ('C:\Documents and Settings\<my username>\Local Settings\Temp\tmp6D36.tmp;C:\Documents and Settings\<my username>\Local Settings\Temp\tmp6D38.tmp;C:\Documents and Settings\<my username>\Local Settings\Temp\tmp6D37.tmp'!='' and 'true'=='').
Done building target "_GenerateCompileInputs" in project "COS.BusinessEntities.csproj".

所以看起来还有一些其他临时文件，但我不确定为什么要生成它们，或者为什么将它们视为项目的输入。

非常感谢迄今为止的帮助!

Answer 1

好吧，我终于明白了。为后代张贴答案。

在解决方案资源管理器中，我双击导致此问题的 .edmx 文件以打开模型浏览器。在模型浏览器中，我选择了我的模型，并在“属性”窗口中，将“元数据工件处理”更改为“复制到输出目录”。

在那之后，它工作正常(没有不必要的重建)!

另外，有人告诉我这不会发生在 VS2010 中(虽然还没有测试过)。