//</SnippetSetupBarcodeScanner>
/// <summary>
/// Event handler for the Release Device Requested event fired when barcode scanner receives Claim request from another application
/// </summary>
/// <param name="sender"></param>
/// <param name="args"> Contains the ClaimedBarcodeScanner that is sending this request</param>
//<SnippetReleaseDeviceRequested>
async void claimedScanner_ReleaseDeviceRequested(object sender, ClaimedBarcodeScanner e)
{
await Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Normal, () =>
{
e.RetainDevice();
});
}
/// <summary>
/// Event handler for the Release Device Requested event fired when barcode scanner receives Claim request from another application
/// </summary>
/// <param name="sender"></param>
/// <param name="args"> Contains the ClamiedBarcodeScanner that is sending this request</param>
void claimedScanner_ReleaseDeviceRequested(object sender, ClaimedBarcodeScanner e)
{
// always retain the device
e.RetainDevice();
rootPage.NotifyUser("Event ReleaseDeviceRequested received. Retaining the barcode scanner.", NotifyType.StatusMessage);
}
/// <summary>
/// This method is called upon when a claim request is made on instance 2. If a retain request was placed on the device it rejects the new claim.
/// </summary>
/// <param name="instance"></param>
/// <returns></returns>
async void claimedBarcodeScannerInstance2_ReleaseDeviceRequested(object sender, ClaimedBarcodeScanner e)
{
await MainPage.Current.Dispatcher.RunAsync(
Windows.UI.Core.CoreDispatcherPriority.Normal,
() =>
{
//check if the instance wants to retain the device
if (Retain2.IsChecked == true)
{
try
{
//Retain the device
claimedBarcodeScannerInstance2.RetainDevice();
}
catch (Exception exception)
{
rootPage.NotifyUser("Retain instance 1 failed: " + exception.Message, NotifyType.ErrorMessage);
}
}
//Release the device
else
{
claimedBarcodeScannerInstance2.Dispose();
claimedBarcodeScannerInstance2 = null;
if (barcodeScannerInstance2 != null)
{
barcodeScannerInstance2.Dispose();
barcodeScannerInstance2 = null;
}
}
}
);
}
/// <summary>
/// This method is called upon when a claim request is made on instance 2. If a retain request was placed on the device it rejects the new claim.
/// </summary>
/// <param name="instance"></param>
/// <returns></returns>
async void claimedBarcodeScannerInstance2_ReleaseDeviceRequested(object sender, ClaimedBarcodeScanner e)
{
await MainPage.Current.Dispatcher.RunAsync(
Windows.UI.Core.CoreDispatcherPriority.Normal,
() =>
{
UpdateOutput(String.Format("\nReleaseDeviceRequested ({0})", claimedBarcodeScannerInstance2.DeviceId));
//check if the instance wants to retain the device
if (Retain2.IsChecked == true)
{
try
{
//Retain the device
claimedBarcodeScannerInstance2.RetainDevice();
UpdateOutput(String.Format("\t(Scanner Retained)"));
}
catch (Exception exception)
{
UpdateOutput(String.Format("\t(retain failed) ({0})", exception.ToString()));
}
}
//Release the device
else
{
claimedBarcodeScannerInstance2.Dispose();
claimedBarcodeScannerInstance2 = null;
UpdateOutput("Scanner Released.");
}
}
);
}
/// <summary>
/// Event handler for the Release Device Requested event fired when barcode scanner receives Claim request from another application
/// </summary>
/// <param name="sender"></param>
/// <param name="args"> Contains the ClamiedBarcodeScanner that is sending this request</param>
async void claimedScanner_ReleaseDeviceRequested(object sender, ClaimedBarcodeScanner e)
{
await Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Normal, () =>
{
// alsways retain the device
e.RetainDevice();
UpdateOutput("Event ReleaseDeviceRequest received. Retaining the Barcode Scanner.");
});
}
/// <summary>
/// Event handler for the Release Device Requested event fired when barcode scanner receives Claim request from another application
/// </summary>
/// <param name="sender"></param>
/// <param name="args"> Contains the ClamiedBarcodeScanner that is sending this request</param>
async void claimedScanner_ReleaseDeviceRequested(object sender, ClaimedBarcodeScanner e)
{
await Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Normal, () =>
{
// always retain the device
e.RetainDevice();
rootPage.NotifyUser("Event ReleaseDeviceRequested received. Retaining the barcode scanner.", NotifyType.StatusMessage);
});
}
async void claimedScanner_ReleaseDeviceRequested(object sender, ClaimedBarcodeScanner e)
{
await CoreApplication.GetCurrentView().CoreWindow.Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Normal, () =>
{
// always retain the device
e.RetainDevice();
Debug.WriteLine("Event ReleaseDeviceRequested received. Retaining the barcode scanner.");
});
}
/// <summary>
/// Event handler for the Release Device Requested event fired when barcode scanner receives Claim request from another application
/// </summary>
/// <param name="sender"></param>
/// <param name="args"> Contains the ClamiedBarcodeScanner that is sending this request</param>
async void claimedScanner_ReleaseDeviceRequested(object sender, ClaimedBarcodeScanner e)
{
// always retain the device
e.RetainDevice();
await Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Normal, () =>
{
rootPage.NotifyUser("Event ReleaseDeviceRequested received. Retaining the barcode scanner.", NotifyType.StatusMessage);
});
}
private void ClaimedScanner_ReleaseDeviceRequested(object sender, ClaimedBarcodeScanner e)
{
UpdateMessage("Another process is requesting barcode scanner device.");
e.RetainDevice();
}
void claimedBarcodeScanner_ReleaseDeviceRequested(object sender, ClaimedBarcodeScanner e)
{
e.RetainDevice(); // Retain exclusive access to the device
}
/// <summary>
/// Event handler for the Release Device Requested event fired when barcode scanner receives Claim request from another application
/// </summary>
/// <param name="sender"></param>
/// <param name="args"> Contains the ClamiedBarcodeScanner that is sending this request</param>
async void claimedScanner_ReleaseDeviceRequested(object sender, ClaimedBarcodeScanner e)
{
await Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Normal, () =>
{
// alsways retain the device
e.RetainDevice();
UpdateOutput("Event ReleaseDeviceRequest received. Retaining the Barcode Scanner.");
});
}
private void WhenScannerReleaseDeviceRequested(object sender, ClaimedBarcodeScanner args)
{
args.RetainDevice();
}