Handle keyboard interrupt, execute end block

I have a powershell function that processes a list of files. I use the begin, process and end blocks for this:

begin {
    # prepate some stuff
}
process {
    # process each file
}
end {
    # clean up
}

Now, when I hit Ctrl+C, the whole script just terminates right at the spot where it was. That’s not really a problem for the process part as that will only do permanent changes on the very last command.

I do however still want to execute what’s in the end block to clean it up a bit, and to print some statistics about the files that did manage to get processed.

Is there a clean way to catch keyboard interrupts, while keeping the begin/process/end structure?