Where to download C#

I use Microsoft Visual C# 2008 Express Edition with SP1 which can be freely downloaded from here.

hiddemo.exe and OScope.exe

this file is compatible with the example ex_usb_hid.c which is mentioned in ccs:
CCS DELPHI HOST DEMO

USB test with pic18f4550

just program .hex file to the chip the code was written in mcc18 :
Generic HID pic side
Generic HID pc side