在c#msbuild任务中检索同名的多个项元数据

如何在c#msbuild任务中获取具有相同名称的多个项元数据，例如，如果我有：

 <ItemGroup>    
   <Assemblies Include = "S:\SVN\SomeDirectory\src\">
     <excludeAssembly>AssemblyName_1</excludeAssembly>
     <excludeAssembly>AssemblyName_2</excludeAssembly>
     <excludeAssembly>AssemblyName_3</excludeAssembly>
     <excludeAssembly>AssemblyName_4</excludeAssembly>
   </Assemblies>
 </ItemGroup>

---

获取单个元数据值。我需要获得

值列表元数据与项不同，一个项可以有不同的元数据，但一个元数据只能有一个值

使用Microsoft.Build.Engine程序集（BuildItem.EvaluateAllItemMetadata（…）上的Reflector，可以看到项目的元数据存储在字典中，因此对于给定的元数据名称，只能有一个值

在您的情况下，一个解决方法是使用元数据作为项的名称，如下所示：

<ItemGroup>    
  <Assemblies Include = "S:\SVN\SomeDirectory\src\">
    <excludeAssembly>exludeAssemblySet</excludeAssembly>
  </Assemblies>
</ItemGroup>

<ItemGroup>
  <exludeAssemblySet Include="AssemblyName_1"/>
  <exludeAssemblySet Include="AssemblyName_2"/>
  <exludeAssemblySet Include="AssemblyName_3"/>
  <exludeAssemblySet Include="AssemblyName_4"/>
</ItemGroup>

// Approximative syntax, I don't know what you want to do
var itemData = itemTask.GetMetadata("excludeAssembly");
BuildItemGroup excludeAssemblies = project.GetEvaluatedItemsByName(itemData);

排除故障
//近似语法，我不知道你想做什么
var itemData=itemTask.GetMetadata（“excludeAssembly”）；
BuildItemGroup ExcludeAssemblys=project.GetEvaluatedItemsByName（itemData）；

<ItemGroup>    
  <Assemblies Include = "S:\SVN\SomeDirectory\src\">
    <excludeAssembly>exludeAssemblySet</excludeAssembly>
  </Assemblies>
</ItemGroup>

<ItemGroup>
  <exludeAssemblySet Include="AssemblyName_1"/>
  <exludeAssemblySet Include="AssemblyName_2"/>
  <exludeAssemblySet Include="AssemblyName_3"/>
  <exludeAssemblySet Include="AssemblyName_4"/>
</ItemGroup>

// Approximative syntax, I don't know what you want to do
var itemData = itemTask.GetMetadata("excludeAssembly");
BuildItemGroup excludeAssemblies = project.GetEvaluatedItemsByName(itemData);