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PosExplorer.DeviceRemovedEvent Event (POS for .NET v1.12 SDK Documentation)

  • Article

2/27/2008

Notifies the application when a POS device has been removed from the system.

Namespace: Microsoft.PointOfService
Assembly: Microsoft.PointOfService (in microsoft.pointofservice.dll)

Syntax

'Declaration
Public Event DeviceRemovedEvent As DeviceChangedEventHandler

public event DeviceChangedEventHandler DeviceRemovedEvent

public:
event DeviceChangedEventHandler^ DeviceRemovedEvent {
    void add (DeviceChangedEventHandler^ value);
    void remove (DeviceChangedEventHandler^ value);
}

/** @event */
public void add_DeviceRemovedEvent (DeviceChangedEventHandler value)

/** @event */
public void remove_DeviceRemovedEvent (DeviceChangedEventHandler value)

Example

The following example demonstrates how an application might handle a DeviceRemovedEventevent:

posExplorer.DeviceRemovedEvent += new (DeviceChangedEventHandler(OnDeviceRemoved);

Msr msr = (Msr) posExplorer.CreateInstance(deviceInfo);
msr.Open();
...

private void OnDeviceRemoved(object source, DeviceChangedEventArgs e)
{
      if (e.Device.IsDeviceInfoOf(msr))
           msr.Close();
}

Remarks

DeviceRemovedEvent only notifies for POS devices for which there is a service object installed.

The event handler receives an argument of type DeviceChangedEventArgs which contains a DeviceInfo object for the removed device.

See Also

Reference

PosExplorer Class
PosExplorer Members
Microsoft.PointOfService Namespace
DeviceInfo Class
DeviceChangedEventArgs Class