asp.net Scanner in Both TWAIN and WIA

1) Download Source code from - https://sites.google.com/site/eduardfilefepositore/

2) Open ScannerAdapterFactory.cs

3) Check Below Method and update according to your situation

 public static ScannerAdapterBase GetScannerAdapter(nessScanning control, IMessageFilter messageFilter, IntPtr handle)
        {
            lock (locker)
            {
                bool isWiaDeviceSelected = false;
                bool isTwainDeviceSelected = false;

                if (m_ScannerAdapterBase != null)
                {
                    return m_ScannerAdapterBase;
                }

                try
                {
                    //commented by shekhar 6/2/2015 - If you want to use WIA then uncomment this
                    //Checks WIA Devices
                    //m_ScannerAdapterBase = new WiaScannerAdapter();
                    //m_ScannerAdapterBase.InitAdapter(control, messageFilter, handle);
                    //isWiaDeviceSelected = m_ScannerAdapterBase.SelectDevice();
                    //if (isWiaDeviceSelected)
                    //{
                    //    return m_ScannerAdapterBase;
                    //}
                    //end of commented by shekhar 6/2/2015 - If you want to use WIA then uncomment this

                    //Checks TWAIN Devices
                    m_ScannerAdapterBase = new TwainScannerAdapter();
                    m_ScannerAdapterBase.InitAdapter(control, messageFilter, handle);
                    isTwainDeviceSelected = m_ScannerAdapterBase.SelectDevice();
                    if (isTwainDeviceSelected)
                    {
                        return m_ScannerAdapterBase;
                    }
                }
                catch (ScannerException ex)
                {
                    throw ex;
                }

                return null;
            }
        }