Custom Check in policy in TFS?

Question

We have some xml files in the our project and whenever we check-in these xml files into TFS, We have make sure before checking-in that we have added those xml files to propr

Answer 1

It's not appropriate to raise UI in a custom check-in policy - the lifecycle of a check-in policy is very short, and they will be evaluated frequently and not necessarily in a UI context or on the UI thread.

Can you determine programmatically whether the appropriate XML files are being checked in? If so, you could create a custom check-in policy that fails if the XML files are not pended for add.

Gated Check-in may be the best solution to this problem: does the build fail if these XML files do not exist - or would unit tests fail if these files are missing? If so, this is a perfect candidate for Gated Check-in, which will prevent these check-ins from occurring.