MSBuild: Passing arrays between targets

In MSBuild, if you have a target that operates on a list of items of a specific type, and you want to call that operation several times with different lists, here is a way to do that using the DependsOnTargets attribute:

<Target Name="UserInterface">
  <MSBuild Projects="$(MSBuildProjectFile)" Targets="Service"
    Properties="ServiceDependsOn=PersonRepository-1" />
  <MSBuild Projects="$(MSBuildProjectFile)" Targets="Service"
    Properties="ServiceDependsOn=PersonRepository-2" />
</Target>

<Target Name="Service" DependsOnTargets="$(ServiceDependsOn)">
  <Message Text="Persons: @(Persons->'%(Name) (%(Identity))')" />
</Target>

<Target Name="PersonRepository-1">
  <ItemGroup>
    <Persons Include="Al"><Name>Al Omaha</Name></Persons>
    <Persons Include="Ben"><Name>Ben Patterson</Name></Persons>
  </ItemGroup>
</Target>

<Target Name="PersonRepository-2">
  <ItemGroup>
    <Persons Include="Adrian"><Name>Adrian Quist</Name></Persons>
    <Persons Include="Britta"><Name>Britta Ruud</Name></Persons>
  </ItemGroup>
</Target>

and here is sample output:

Project "C:\Projects\MSBuildItems.xml" on node 0 (default targets).
Project "C:\Projects\MSBuildItems.xml" (1) is building "C:\Projects\MSBuildItems.xml" (1:2) on node 0 (Service target(s)).
 Persons: Al Omaha (Al);Ben Patterson (Ben)
Done Building Project "C:\Projects\MSBuildItems.xml"
(Service target(s)).

Project "C:\Projects\MSBuildItems.xml" (1) is building "C:\Projects\MSBuildItems.xml" (1:3) on node 0 (Service target(s)).
 Persons: Adrian Quist (Adrian);Britta Ruud (Britta)
Done Building Project "C:\Projects\MSBuildItems.xml"
(Service target(s)).

Done Building Project "C:\Projects\MSBuildItems.xml" (default targets).