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| Leadtools.Barcode Namespace > BarcodeReadSymbologyEventArgs Class : Operation Property |
public BarcodeReadSymbologyOperation Operation {get;}
'Declaration
Public ReadOnly Property Operation As BarcodeReadSymbologyOperation
'Usage
Dim instance As BarcodeReadSymbologyEventArgs Dim value As BarcodeReadSymbologyOperation value = instance.Operation
public BarcodeReadSymbologyOperation Operation {get;}
@property (nonatomic, assign, readonly) LTBarcodeReadSymbologyOperation operation
public BarcodeReadSymbologyOperation getOperation()
get_Operation();
public: property BarcodeReadSymbologyOperation Operation { BarcodeReadSymbologyOperation get(); }
The value of Operation is set by the BarcodeReader object as follows:
| Value | Description |
|---|---|
| BarcodeReadSymbologyOperation.PreRead |
The BarcodeReader object is about to read the barcode symbologies in GetSymbologies. The input parameters are: The symbologies to be read can be obtained through the GetSymbologies method and the associated read options are in the Options property. |
| BarcodeReadSymbologyOperation.PostRead |
The BarcodeReader has finished reading the barcode symbologies. The input parameters are: The symbologies to be read can be obtained through the GetSymbologies method and the associated read options are in the Options property. The resulting parameters are: The barcode data found which is in the Data property and 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). |
For an example, refer to BarcodeReader.ReadSymbology.