customTasks.targets

<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
	<UsingTask TaskName="GetMetadataTask" TaskFactory="CodeTaskFactory" AssemblyFile="$(MSBuildToolsPath)\Microsoft.Build.Tasks.v4.0.dll" >
		<ParameterGroup>
			<Items ParameterType="Microsoft.Build.Framework.ITaskItem[]" Required="true" />
			<MetadataString Output="true" />
		</ParameterGroup>
		<Task>
			<Using Namespace="System"/>
			<Code Type="Fragment" Language="cs">
				<![CDATA[
    StringBuilder metadata = new StringBuilder();
foreach (var item in Items)
{
    metadata.AppendFormat("{0}\r\n", item);
    foreach (string name in item.MetadataNames)
    {
        metadata.AppendFormat("  {0}={1}\r\n", name, item.GetMetadata(name));
    }
    metadata.AppendFormat("\r\n");
}
MetadataString = metadata.ToString();
]]>
			</Code>
		</Task>
	</UsingTask>
</Project>