How to connect a PC and android?

I wanted to share files between my computer and android device but always connecting them with a cable is a trouble. Is there a way to use my phone's WLAN network and my PC's WLAN to do this(without any internet connection), kind of like how Filetransfer software works on two android devices? The file transfer software that I mention of only ranges for a short distance for android devices, I just want to use the two WLAN networks of my PC and android devices to share files between PC and my device and use no internet resources at all since the network here is not so good.