/// <summary>
/// Initializes a new instance of the <see cref="HardwareOnlyKey"/> class.
/// </summary>
/// <param name="hidApi"><see cref="HidApi"/> instance wrapping the hidapi library.</param>
public HardwareOnlyKey(HidApi hidApi)
{
if (hidApi == null)
{
throw new ArgumentNullException(nameof(hidApi));
}
this.hidApi = hidApi;
this.disposed = false;
this.deviceInfo = this.FindSoleOnlyKey();
this.device = this.hidApi.Open(this.deviceInfo.Path);
}
private static void DoSomethingWithHid()
{
IHidHandle hid1 = null;
try
{
try
{
hid1 = HidApi.Library.Open(deviceIds[0].VendorId, deviceIds[0].ProductId, null);
}
catch (InvalidOperationException e)
{
Console.WriteLine($"Could not open once ({e.Message}), retrying");
try
{
hid1 = HidApi.Library.Open(deviceIds[1].VendorId, deviceIds[1].ProductId, null);
}
catch (InvalidOperationException f)
{
Console.WriteLine($"No device found ({f.Message}), sorry.");
return;
}
}
if (hid1 == null)
{
Console.WriteLine("No device found, sorry, should not be reached.");
return;
}
try
{
Console.WriteLine("Manufacturer = {0}", hid1.GetManufacturerString());
}
catch (InvalidOperationException e)
{
Console.WriteLine($"Couldn't get manufacturer info: {e.Message}");
}
try
{
Console.WriteLine("Product = {0}", hid1.GetProductString());
}
catch (InvalidOperationException e)
{
Console.WriteLine($"Couldn't get product info: {e.Message}");
}
try
{
Console.WriteLine("Serial_number = {0}", hid1.GetSerialNumber());
}
catch (InvalidOperationException e)
{
Console.WriteLine($"Couldn't get serial number: {e.Message}");
}
}
finally
{
// NB: normally I should be using the `using' keyword and the
// hid1.Dispose would be implicit...
if (hid1 != null)
{
hid1.Dispose();
hid1 = null;
Console.WriteLine("Closed device");
}
}
}