Question : PowerShell string += question

Ok, so this is probably a simple one, but I have been staring at it for too long.

I am comparing 2 text files and want to put the differences into a string,  This works fine, but leaves me with a pesky blank line at the end.

Compare-Object (GC .\remote.txt) (GC .\complete.txt) | %{$strFilesToDownload += "$($_.InputObject)`n"}

Is there a way to avoid this without parsing out the new line after this?  For an array I would typically check if it was the last item, but this is not the case here.  Thank you for any information / hints.

Answer : PowerShell string += question

One quick way would be to use something like this:

SELECT * FROM mytable WHERE PATINDEX('%[^[ a-z0-9!@#$%^&*()-_=+]%' ,myfield)  > 0

You might have to add more characters to this, but this is just a quick example.