What are ways to force users to commit certain files allways together in SVN? -

i have 3 files .xml .cs , . h want modified , committed together. in different directories. users forget modify/commit accordingly.

how can force them commit 3 files ?

i want them see error message explaining why commit rejected.

i can perhaps try pre-commit hook. if provide general hook-script example, helpful.

or there other effective ways ?

we use linux centos server + win/tortoise workstations.