为什么'；是否删除MSBuild项组的内容工作？

我在csproj中定义了一个

AfterCompile

目标，它涉及缩小JS和CSS并将其组合。然后我将它们添加到ItemGroup

Content

并删除不必要的文件，但是remove参数似乎不起作用

<Target Name="AfterCompile">
  <ItemGroup>
    <JS_Combine Include="js\c??.*.min.js" />
    <CSS_Combine Include="css\c??.*.min.css" />
  </ItemGroup>
  <!-- Combine JS -->
  <ReadLinesFromFile File="%(JS_Combine.Identity)">
    <Output TaskParameter="Lines" ItemName="JSLines" />
  </ReadLinesFromFile>
  <WriteLinesToFile File="js\combined.min.js" Lines="@(JSLines)" Overwrite="true" />
  <!-- Combine CSS -->
  <ReadLinesFromFile File="%(CSS_Combine.Identity)">
    <Output TaskParameter="Lines" ItemName="CSSLines" />
  </ReadLinesFromFile>
  <WriteLinesToFile File="css\combined.min.css" Lines="@(CSSLines)" Overwrite="true" />
  <!-- Tidy up -->
  <ItemGroup>
    <Content Include="js\combined.min.js" />
    <Content Include="css\combined.min.css" />
    <Content Remove="@(JS_Combine)" />
    <Content Remove="@(CSS_Combine)" />
  </ItemGroup>
      <!-- DEBUG message -->
  <Message Text="DEBUG: @(Content)" Importance="high" />
</Target>

---

调试消息仍然将@（内容）显示为包含不必要的js文件。有人能告诉我发生了什么吗？

为了重现您的情况，我创建了这个示例脚本

<Project DefaultTargets="Demo" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">

  <Target Name="Demo">
    <ItemGroup>
      <JS_Combine Include="js\c01.min.js;js\c02.min.js;js\c03.min.js;" />
      <CSS_Combine Include="css\c01.min.css;css\c02.min.css;css\c03.min.css;" />
    </ItemGroup>
    <ItemGroup>
      <Content Include="@(JS_Combine);@(CSS_Combine)"/>
    </ItemGroup>

    <Message Text="Content Before: @(Content)" Importance="high" />
    <!-- Tidy up -->
    <ItemGroup>
      <Content Include="js\combined.min.js" />
      <Content Include="css\combined.min.css" />
      <Content Remove="@(JS_Combine)" />
      <Content Remove="@(CSS_Combine)" />
    </ItemGroup>

    <Message Text="-------------------------"/>
    <Message Text="Content After: @(Content)" Importance="high" />
  </Target>

</Project>

你还对此有意见吗

Project "C:\Data\Development\My Code\Community\MSBuild\RemoveTest\Remove01.proj" on node
1 (default targets).
Demo:
  Content Before: js\c01.min.js;js\c02.min.js;js\c03.min.js;css\c01.min.css;css\c02.min.c
  ss;css\c03.min.css
  -------------------------
  Content After: js\combined.min.js;css\combined.min.css
Done Building Project "C:\Data\Development\My Code\Community\MSBuild\RemoveTest\Remove01.
proj" (default targets).