How to execute TFS undo command only if there are files in Pending changes?

Question

Team Foundation Server

The build project comes with an undo command to exclude all files from Pending changes. Under certain conditions, there are no such files and undo does not work:

<Exec command="$(tfcommand) undo /recursive /noprompt &quot;$(SolutionRoot)&quot;"/>

I know that you can hack and add
IgnoreExitCode="true",
but I would like to know a more correct solution, i.e. run undo only if there are files in pending changes.

Answer 1

Ask TFS for a list of files in Pending Changes, determine its length.
Example . If necessary, you can drive the code into a PS script.