Vim errorformat for Visual Studio

I want to use Vim's quickfix features with the output from Visual Studio's devenv build process or msbuild.

I've created a batch file called build.bat which executes the devenv build like this:

devenv MySln.sln /Build Debug

In vim I've pointed the :make command to that batch file:

:set makeprg=build.bat

When I now run :make, the build executes successfully, however the errors don't get parsed out. So if I run :cl or :cn I just end up seeing all the output from devenv /Build. I should see only the errors.

I've tried a number of different errorformat settings that I've found on various sites around the net, but none of them have parsed out the errors correctly. Here's a few I've tried:

set errorformat=%*\\d>%f(%l)\ :\ %t%[A-z]%#\ %m
set errorformat=\ %#%f(%l)\ :\ %#%t%[A-z]%#\ %m
set errorformat=%f(%l,%c):\ error\ %n:\ %f

And of course I've tried Vim's default.

Here's some example output from the build.bat:

C:\TFS\KwB Projects\Thingy>devenv Thingy.sln /Build Debug 

Microsoft (R) Visual Studio Version 9.0.30729.1.
Copyright (C) Microsoft Corp. All rights reserved.
------ Build started: Project: Thingy, Configuration: Debug Any CPU ------
c:\WINDOWS\Microsoft.NET\Framework\v3.5\Csc.exe /noconfig /nowarn:1701,1702 /errorreport:prompt /warn:4 /define:DEBUG;TRACE /reference:"C:\Program Files\Reference Assemblies\Microsoft\Framework\v3.0\PresentationCore.dll" /reference:"C:\Program Files\Reference Assemblies\Microsoft\Framework\v3.0\PresentationFramework.dll" /reference:"C:\Program Files\Reference Assemblies\Microsoft\Framework\v3.5\System.Core.dll" /reference:"C:\Program Files\Reference Assemblies\Microsoft\Framework\v3.5\System.Data.DataSetExtensions.dll" /reference:c:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\System.Data.dll /reference:"C:\Program Files\Reference Assemblies\Microsoft\Framework\v3.5\System.Data.Linq.dl