I have an application written in WPF/C# that can take multiple files as command line arguments. When I run it from the command line with multiple files it opens all of them
Thats a problem with windows explorer, only operating on the last file selected. Maybe this might help: http://social.technet.microsoft.com/Forums/en-US/w7itproui/thread/1d2e6a3b-6abb-4be9-82ac-447ecdbce201