Sample drivers to implement IOCTL in KMDF Bus Driver

I am new to KMDF Bus Driver.But I already had experience in writing Network miniport driver using NDIS Wrapper.In the case of NDIS,we can achieve kernel-user interaction by using OID Call.But in the case of KMDF, i got the information from sites that it can be achieved by using EvtIoRead/EvtIoWrite/EvtIoDeviceControl.But,i haven’t get any sample driver for clear understanding to implement. I referred Toaster Sample driver, in that i could see only the skeleton for IOCTL.So, Could anyone please tell me ,where i can get the sample driver to achieve IOCTL in KMDF.