ImageAcquiring Event (Device)

In This Topic

Occurs when image acquisition starts.

Syntax

'Declaration

Public Event ImageAcquiring As System.EventHandler(Of ImageAcquiringEventArgs)

public event System.EventHandler<ImageAcquiringEventArgs> ImageAcquiring

public: __event System.EventHandler<ImageAcquiringEventArgs*>* ImageAcquiring

public:
event System.EventHandler<ImageAcquiringEventArgs^>^ ImageAcquiring

Remarks

Here is a sequence of events if scan is successfully completed:

for each acquired image
- ImageAcquiring event occurs before image is acquiring
- ImageAcquiringProgress events occurs during image acquisition (only if Memory transfer mode is used)
- ImageAcquired event occurs after image is acquired
ScanCompleted event occurs when scan is completed
UserInterfaceClosed event occurs when UI is closed
ScanFinished event occurs when scan is finished

Here is a sequence of events if scan is canceled:

for each acquired image
- ImageAcquiring event occurs before image is acquiring
- ImageAcquiringProgress events occurs during image acquisition (only if Memory transfer mode is used)
- ImageAcquired event occurs after image is acquired
ScanCanceled event occurs when scan is canceled
ScanFinished event occurs when scan is finished

Here is a sequence of events if scan is failed:

for each acquired image
- ImageAcquiring event occurs before image is acquiring
- ImageAcquiringProgress events occurs during image acquisition (only if Memory transfer mode is used)
- ImageAcquired event occurs after image is acquired
ScanFailed event occurs when scan is failed
ScanFinished event occurs when scan is finished

Requirements

Target Platforms: .NET 9; .NET 8; .NET 7; .NET 6; .NET Framework 4.8, 4.7, 4.6, 4.5, 4.0, 3.5

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