*prerequisite Step to use 4850DR Imaging SDK Library* - Copy CommDrvDriver.exe to C:\windows folder CommDrvDriver.exe is an driver to communicate 4850DR device. 4850DR SDK Library will call it from C:\Windows to communicate with 4850DR device. Build steps: Copy the following 8 dll files to your executable file folder or [C:\Windows\System32]. The executable file will invoke these dll. The executable file will crash if you don't copy these files to the folder. 1. CommDrv.dll 2. hhiImgrSdk.dll 3. Honeywell.WinForms.HHI.CommPortComponent.dll 4. Honeywell.WinForms.HHI.SDK.dll 5. Honeywell.WinForms.HHI.SymbologyComponent.dll 6. Honeywell.WinForms.HHI.Utility.dll 7. Honeywell.WinForms.HHI.ImageControl.dll 8. Honeywell.WinForms.HHI.DecodeControl.dll Add reference of the following 3 files. 1. Honeywell.WinForms.HHI.CommPortComponent.dll 2. Honeywell.WinForms.HHI.SDK.dll 3. Honeywell.WinForms.HHI.Utility.dll Right click [References] of your solution, add the up 3 files.