I am developing a software that is interfaced with a RFID device. The RFID device manufacturer provides me with a DLL file that contains various functions to communicate with the device. One of the simplest function in the dll file is "CommOpen". This function opens the selected PC serial port.
I have tried my best to get this function executed using VB.net <DLLImport>. But all efforts proves to be unsuccessful. Following exception is encountered
"Unable to load DLL 'Reader.dll': The specified module could not be found. (Exception from HRESULT: 0x8007007E)"
Attached herewith is a zip file that holds the code,dll file and the pdf file that shows the details of the functions and their prototypes.
Please let me know the solution to this problem.