Using NUnitForms with NUnit Framework 2.2.9

NUnitForms has been compiled to work with NUnit framework library 2.2.7. However, NUnit have released a new framework which can be made to work with NUnit 2.2.9 quite easily.

By default, if you put NUnitForms and NUnit Framework 2.2.9 into the same project, you will get the error message

Could not load file or assembly 'nunit.framework, Version=2.2.7.0, Culture=neutral, PublicKeyToken=96d09a1eb7f44a77' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)

along with a further error

WRN: Assembly binding logging is turned OFF. To enable assembly bind failure logging, set the registry value [HKLM\Software\Microsoft\Fusion!EnableLog] (DWORD) to 1. Note: There is some performance penalty associated with assembly bind failure logging.
To turn this feature off, remove the registry value [HKLM\Software\Microsoft\Fusion!EnableLog].

However, you can use NUnitForms with NUnit 2.2.9 if you get the test project to perform some assemble redirecting. In your test project, create an app.config file and add the following XML to redirect NUnitForms assemble to use the NUnit Framework 2.2.9 assembly:

<?xml version="1.0"?>
<configuration>
  <runtime>
      <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
          <dependentAssembly>
              <assemblyIdentity name="nunit.framework" publicKeyToken="96D09A1EB7F44A77" culture="neutral"/>
              <bindingRedirect oldVersion="0.0.0.0-2.4.0.2" newVersion="2.4.0.2"/>
          </dependentAssembly>
      </assemblyBinding>
  </runtime>
</configuration>

Recompile and run your NUnitForms tests and your working :)