public override void Open()
{
if (string.IsNullOrWhiteSpace(_oposDeviceName))
{
try
{
_oposDeviceName = GetConfigurationProperty("OposDeviceName");
_oposDeviceName.Trim();
}
catch
{
_oposDeviceName = "";
}
}
if (string.IsNullOrWhiteSpace(_oposDeviceName))
{
string strMessage = "OposDeviceName is not configured on " + DevicePath + ".";
throw new Microsoft.PointOfService.PosControlException(strMessage, ErrorCode.NoExist);
}
if (_cco == null)
{
try
{
// CCO object CreateInstance
_cco = new OpenPOS.Devices.OPOSElectronicValueRW();
// Register event handler
_cco.DataEvent += new _IOPOSElectronicValueRWEvents_DataEventEventHandler(_cco_DataEvent);
_cco.DirectIOEvent += new _IOPOSElectronicValueRWEvents_DirectIOEventEventHandler(_cco_DirectIOEvent);
_cco.ErrorEvent += new _IOPOSElectronicValueRWEvents_ErrorEventEventHandler(_cco_ErrorEvent);
_cco.OutputCompleteEvent += new _IOPOSElectronicValueRWEvents_OutputCompleteEventEventHandler(_cco_OutputCompleteEvent);
_cco.StatusUpdateEvent += new _IOPOSElectronicValueRWEvents_StatusUpdateEventEventHandler(_cco_StatusUpdateEvent);
_cco.TransitionEvent += new _IOPOSElectronicValueRWEvents_TransitionEventEventHandler(_cco_TransitionEvent);
}
catch
{
string strMessage = "Can not create Common ControlObject on " + DevicePath + ".";
throw new Microsoft.PointOfService.PosControlException(strMessage, ErrorCode.Failure);
}
}
VerifyResult(_cco.Open(_oposDeviceName));
}