Debug Your Application

Troubleshooting

Color or Grayscale Images - Barcode Xpress works with 1, 8, or 24-bit images.
Not able to read Barcodes when you know they exist due to poor image quality - There is no set process for cleanup of images. What may work on one image for clean-up, may not work on another.
Issues with barcode recognition - Some reasons why your barcode may not be detected could be due to poor resolution, resolutions of horizontal and vertical are not the same, the barcode wasn't made correctly according to the standard, bad scanning quality, bad image quality (see bullet two above), or the barcode is a type that Barcode Xpress doesn't read.
Confidence values - Confidence values are programmed into the component. Barcode Xpress is conservative on confidence values compared to other competitive components so the developer understands when a barcode may not be 100% accurate. This ensures the barcode recognized is producing accurate data.

Event Handling

Barcode Xpress may throw a number of exceptions if it comes across errors or events that need to be handled by the application. These exceptions are tabulated below:

Exception	Description
ImageNotAvailableException	Thrown whenever there is no image available for an operation that requires one.
InternalErrorException	Thrown whenever an unhandled exception is encountered.
InvalidAreaException	Thrown whenever an invalid area is used in barcode recognition.
InvalidBitmapException	Thrown if an invalid bitmap is detected.
InvalidIndexException	Thrown if a request for results is outside the valid range.
InvalidLicenseException	Thrown if an invalid license is detected.
InvalidParameterException	Thrown if a parameter is invalid.
OutOfMemoryException	Thrown if the creation of the bitmap to draw the barcode fails.
ParameterOutOfRangeException	Thrown if a parameter is out of range.
StringParseErrorException	Thrown if a parse error is encountered in the ReadFromStream method.
TimeoutErrorException	This exception is not used.
UnableReadBarcodeTypeException	Thrown if an unsupported barcode type is detected.
UnableReadBitmapException	Thrown when a bitmap cannot be read, possibly because of an invalid bitmap handle.

Error Codes

Listed below is a cross reference of error codes and their corresponding descriptions.

Error Codes	Error	Description
9000	OutOfMemoryException	There is not enough memory to continue the operation.
9001	InvalidParameterException	Invalid parameter.
9002	ParameterOutOfRangeException	Parameter out of range.
9003	InvalidBitmapException	Invalid bitmap.
9004	UnableReadbitmapException	Unable to read bitmap.
9006	InvalidIndexException	Invalid index.
9011	InvalidLicenseException	Invalid license.
9012	TimeoutErrorException	Timeout Error.
9013	ImageNotAvailableException	Image not available.
9014	InternalErrorException	Internal error.
9015	InvalidAreaException	Area is outside required range.
9200	StreamParseException	An error was encountered while parsing the stream data in the ReadFromStream method.