The DotNetTestRunner is a command line application named TestRunner.exe. It is included in the dotnet folder of the standard FitNesse distribution.
It can be used as follows:
The sections below document the options. Expand them to learn more.
It can be used as follows:
Usage: TestRunner [options] <host> <port> <page name> [assembly[;assembly]]
-v verbose: prints test progress to colsole
-debug prints FitServer actions to console
-nopaths prevents addition of assemblies from remote FitNesse
-results <filename|'stdout'> sends test results data to the specified file or the console
The sections below document the options. Expand them to learn more.

The exit value if TestRunner is the number of failures and exceptions. So an exit value of 0 means that all the tests passed. Without any options the execution of the TestRunner is not all that exciting. As an example here is the command to execute all of the .NET FIT acceptance tests assuming that FitNesse is running on port 8080 of your computer:
C:\projects\fitnesse\dotnet>TestRunner localhost 8080 FitNesse.DotNet.SuiteAccepNotice that the exit value (ERRORLEVEL) is 0, meanning all tests passed in the first execution. In the second execution the -nopaths options prevented the assembly path from being loaded and the TestRunner was unable to find any of the Fixture classes. This resulted in 134 errors.
tanceTests
C:\projects\fitnesse\dotnet>echo %ERRORLEVEL%
0
C:\projects\fitnesse\dotnet>TestRunner -nopaths localhost 8080 FitNesse.DotNet.S
uiteAcceptanceTests
C:\projects\fitnesse\dotnet>echo %ERRORLEVEL%
134

Now let's run the same tests using the -v (verbose option):
C:\projects\fitnesse\dotnet>TestRunner -v localhost 8080 FitNesse.DotNet.SuiteAcThis generates readable output as you can see.
ceptanceTests
Adding assemblies: C:\projects\fitnesse\dotnet\acceptanceTests.dll;C:\projects\f
itnesse\dotnet\eg.dll;C:\projects\fitnesse\dotnet\fit.dll;fitnesse.jar;classes
................................................................................
................................................................................
................................................................................
...............................
Test Pages: 27 right, 0 wrong, 0 ignored, 0 exceptions
Assertions: 271 right, 0 wrong, 18 ignored, 0 exceptions

This is an option that'll you should never need. However, if you're encoutering unexpected behavior it may be usefull to see the protocol activity between FitNesse and TestRunner. This -debug option will print all the verbose output from FitServer to the console.
C:\projects\fitnesse\dotnet>TestRunner -debug localhost 8080 FitNesse.DotNet.Sui
teAcceptanceTests
HTTP request: GET /FitNesse.DotNet.SuiteAcceptanceTests?responder=fitCli
ent&includePaths=yes HTTP/1.1
Validating connection...
...ok
processing document of size: 5027
results: 21 right, 0 wrong, 0 ignored, 0 exceptions
processing document of size: 1542
results: 8 right, 0 wrong, 0 ignored, 0 exceptions
processing document of size: 1510
results: 3 right, 0 wrong, 0 ignored, 0 exceptions
processing document of size: 2429
results: 6 right, 0 wrong, 0 ignored, 0 exceptions
processing document of size: 2734
results: 5 right, 0 wrong, 0 ignored, 0 exceptions
processing document of size: 2901
results: 4 right, 0 wrong, 0 ignored, 0 exceptions
processing document of size: 4162
results: 1 right, 0 wrong, 0 ignored, 0 exceptions
processing document of size: 4203
results: 41 right, 0 wrong, 0 ignored, 0 exceptions
processing document of size: 1987
results: 6 right, 0 wrong, 0 ignored, 0 exceptions
processing document of size: 3414
results: 27 right, 0 wrong, 0 ignored, 0 exceptions
processing document of size: 2290
results: 18 right, 0 wrong, 0 ignored, 0 exceptions
processing document of size: 2323
results: 6 right, 0 wrong, 0 ignored, 0 exceptions
processing document of size: 2572
results: 4 right, 0 wrong, 0 ignored, 0 exceptions
processing document of size: 1675
results: 2 right, 0 wrong, 0 ignored, 0 exceptions
processing document of size: 3536
results: 8 right, 0 wrong, 0 ignored, 0 exceptions
processing document of size: 2256
results: 7 right, 0 wrong, 0 ignored, 0 exceptions
processing document of size: 1451
results: 1 right, 0 wrong, 0 ignored, 0 exceptions
processing document of size: 4189
results: 3 right, 0 wrong, 18 ignored, 0 exceptions
processing document of size: 1655
results: 3 right, 0 wrong, 0 ignored, 0 exceptions
processing document of size: 3315
results: 18 right, 0 wrong, 0 ignored, 0 exceptions
processing document of size: 2263
results: 3 right, 0 wrong, 0 ignored, 0 exceptions
processing document of size: 1656
results: 2 right, 0 wrong, 0 ignored, 0 exceptions
processing document of size: 3755
results: 39 right, 0 wrong, 0 ignored, 0 exceptions
processing document of size: 2845
results: 3 right, 0 wrong, 0 ignored, 0 exceptions
processing document of size: 2351
results: 3 right, 0 wrong, 0 ignored, 0 exceptions
processing document of size: 3133
results: 20 right, 0 wrong, 0 ignored, 0 exceptions
processing document of size: 2435
results: 9 right, 0 wrong, 0 ignored, 0 exceptions
completion signal recieved
exiting...
End results: 271 right, 0 wrong, 18 ignored, 0 exceptions

Without this option the TestRunner will throw away all of the processed HTML test documents. It can be very useful to keep them around so they be formatted into HTML or archived if you wish. The -results option allows you to print the results either to standard output or to a file. Here's the command to print them to standard output:
0000002439TestFieldsPropertiesAndMethods
3 right, 0 wrong, 0 ignored, 0 exceptions
<div class="setup">
SNIP - Lots of HTML is ommited here. You get the idea.
</div>
00000000000000000271000000000000000000180000000000

The .NET TestRunner doesn't fotmat the test results for you but it genereates output of the required format. Use the -results option to keep the results from a test execution. Then you can use the Java FormattingOption class to do the rest. Here's an example of how to execute a test with the TestRunner and format the results into and HTML file:
Have a look at the HTML that was generated.
http://docs.fitnesse.org/files/dotnet/dotnet.html
C:\projects\fitnesse\dotnet>TestRunner -results dotnet.results localhost 8080 Fi
tNesse.DotNet.SuiteAcceptanceTests
C:\projects\fitnesse\dotnet>java -cp ..\fitnesse.jar fitnesse.runner.FormattingOption
dotnet.results html dotnet.html localhost 8080 FitNesse.DotNet.SuiteAcceptanceT
ests
Have a look at the HTML that was generated.
http://docs.fitnesse.org/files/dotnet/dotnet.html
Add Child Page to DotNetTestRunner