/// <summary>
/// Are there any images left? Are you using a Duplex or AutomaticDocumentFeeder scanner?
/// </summary>
public bool HasMorePages()
{
bool hasMorePages = false;
if (_scannerSettings.IsDuplex || _scannerSettings.IsAutomaticDocumentFeeder)
{
var status = _wiaScannerDeviceSettings.GetPropertyValue <int>("Document Handling Status");
hasMorePages = (status & WiaDpsDocumentHandlingStatus.FEED_READY) != 0;
}
return(hasMorePages);
}
/// <summary>
/// Lists the connected scanners to the system.
/// </summary>
public static IList <ScannerSettings> GetScannerDevices()
{
var scanners = new List <ScannerSettings>();
var deviceInfos = new DeviceManager().DeviceInfos;
for (var i = 1; i <= deviceInfos.Count; i++) // Using a regular for loop to avoid `System.IO.FileNotFoundException: Could not load file or assembly CustomMarshalers` in .NET Core 2x apps.
{
var info = deviceInfos[i];
if (info.Type != WiaDeviceType.ScannerDeviceType)
{
continue;
}
var device = info.Connect();
var scanner = device.Items[1];
var wiaSettings = new WiaSettings(device.Properties);
var defaultSettings = new WiaSettings(scanner.Properties);
var caps = wiaSettings.GetPropertyValue <int>("Document Handling Capabilities");
scanners.Add(new ScannerSettings
{
Name = info.Properties["Description"].get_Value().ToString(),
Id = info.DeviceID,
SupportedResolutions = getAvailableResolutions(defaultSettings),
ScannerDeviceSettings = wiaSettings.ExtendedProperties,
ScannerPictureSettings = defaultSettings.ExtendedProperties,
IsAutomaticDocumentFeeder = (caps & (int)WiaDpsDocumentHandlingSelect.FEEDER) != 0,
IsDuplex = (caps & (int)WiaDpsDocumentHandlingSelect.DUPLEX) != 0,
IsFlatbed = (caps & (int)WiaDpsDocumentHandlingSelect.FLATBED) != 0,
SupportedEvents = getDeviceEvents(device.Events),
SupportedTransferFormats = getSupportedTransferFormats(scanner)
});
Marshal.ReleaseComObject(device);
Marshal.ReleaseComObject(scanner);
}
return(scanners);
}
