public async Task <bool> ReleaseScannerAsync(bool exit)
{
try
{
if (claimedScanner != null)
{
claimedScanner.DataReceived -= ClaimedScanner_DataReceivedAsync;
claimedScanner.ReleaseDeviceRequested -= OnClaimedScannerReleaseDeviceRequested;
claimedScanner.IsDecodeDataEnabled = false;
await claimedScanner.DisableAsync();
claimedScanner.Dispose();
}
scanner = null;
}
catch (Exception ex)
{
//Console.WriteLine(ex.Message);
return(false);
}
return(true);
}
protected override async void OnNavigatedFrom(NavigationEventArgs e)
{
using (ExitLocker)
{
await Task.Run(() =>
{
ExitLocker.WaitOne();
});
}
if (Capture != null)
{
using (Capture)
{
await Capture.StopPreviewAsync();
PreviewControl.Source = null;
}
}
if (ClaimedScanner != null)
{
using (ClaimedScanner)
{
await ClaimedScanner.StopSoftwareTriggerAsync();
await ClaimedScanner.DisableAsync();
ClaimedScanner.DataReceived -= ClaimedScanner_DataReceived;
}
}
BarcodeHistory.Clear();
BarcodeHistory = null;
ExitLocker = null;
Capture = null;
ClaimedScanner = null;
}