BarcodeReadSymbologyOperation Enumeration

Summary

Current barcode read operation.

Syntax

Objective-C

C++

Java

[SerializableAttribute()] 
public enum BarcodeReadSymbologyOperation

<SerializableAttribute()> 
Public Enum BarcodeReadSymbologyOperation

typedef NS_ENUM(NSInteger, LTBarcodeReadSymbologyOperation)

public enum BarcodeReadSymbologyOperation

[SerializableAttribute()] 
public enum class BarcodeReadSymbologyOperation

Members

Value	Member	Description
0	PreRead	The BarcodeReader object is about to read the barcode symbologies. The input parameters are: The symbologies to be read which can be obtained through the GetSymbologies method and the associated read options that are in the Options property.
1	PostRead	The BarcodeReader has finished reading the barcode symbologies. The input parameters are: The symbologies to be read which can be obtained through the GetSymbologies method and the associated read options that are in the Options property. The resulting parameters are: The barcode data found which is in the Data property that may contain a valid BarcodeData object or null (Nothing in Visual Basic) when an error occurs or no barcode of this type is found. In case of an error, the exception is in the Error property (Refer to BarcodeReader.ErrorMode for more information).

Value

Member

Description

PreRead

The BarcodeReader object is about to read the barcode symbologies.

The input parameters are: The symbologies to be read which can be obtained through the GetSymbologies method and the associated read options that are in the Options property.

PostRead

The BarcodeReader has finished reading the barcode symbologies.

The input parameters are: The symbologies to be read which can be obtained through the GetSymbologies method and the associated read options that are in the Options property.

The resulting parameters are: The barcode data found which is in the Data property that may contain a valid BarcodeData object or null (Nothing in Visual Basic) when an error occurs or no barcode of this type is found. In case of an error, the exception is in the Error property (Refer to BarcodeReader.ErrorMode for more information).

Remarks

This enumeration is used as the type for the BarcodeReadSymbologyEventArgs.Operation property that can be used to determine the current barcode read stage.

Example

For an example, refer to BarcodeReader.ReadSymbology.

Requirements

Target Platforms