import clr
from System import *
clr.AddReference('PylonC.NET')
from PylonC.NET import Pylon
from PylonC.NET import PylonBuffer
from PylonC.NET import PylonGrabResult_t

hDev = Pylon.CreateDeviceByIndex(0)
imgBuf = PylonBuffer[Byte](None) #PylonBuffer<Byte> imgBuf = null; Is None correct here ?
grabResult = PylonGrabResult_t()

ret = Pylon.DeviceGrabSingleFrame(hDev, Int32(0), imgBuf, grabResult, UInt32(500))
# the above raises an exception:
# System.ArgumentException: PylonC.NET.PylonBuffer`1[System.Byte] value cannot be converted to PylonC.NET.PylonBuffer`1[T] in method
# Boolean DeviceGrabSingleFrame[T](PylonC.NET.PYLON_DEVICE_HANDLE, Int32, PylonC.NET.PylonBuffer`1[T] ByRef, PylonC.NET.PylonGrabResult_t ByRef, UInt32)