Compare C# source trees

## Compare two C# source trees showing differences and new files - start in root of updated project

$pwd=(get-location).path;ls *.cs -force -recurse -PipelineVariable file | where fullname -NotMatch '\\obj\\' |% { $old = Join-Path 'path_to_original_code' $file.FullName.SubString($pwd.length) ; if( Test-Path $old ) { $n = get-filehash $file.FullName ; if (($o = Get-FileHash $old) -and $n.hash -ne $o.hash ) { if( $diff = compare-object (gc "$($file.FullName)") (gc $old) ) { '***** ' + $file.FullName ; '' ;  } } } else { '+++++ ' + $file.FullName }  }