private void card_read_proc()
{
NfcTag tag = null;
string msg = null;
try
{
if (NfcTagType2.RecognizeAtr(_cardchannel))
{
if (NfcTagType2.Recognize(_cardchannel))
{
tag = NfcTagType2.Create(_cardchannel);
if (tag == null)
{
WarnNotify("Warning|An error has occured while reading the Tag's content");
}
}
else
{
msg = "From the ATR it may be a NFC type 2 Tag, but the content is invalid";
WarnNotify("Warning|" + msg);
}
}
else
{
if (NfcTagType4.Recognize(_cardchannel))
{
tag = NfcTagType4.Create(_cardchannel);
if (tag == null)
{
msg = "An error has occured while reading the Tag's content";
WarnNotify("Warning|" + msg);
}
}
else
{
msg = "Unrecognized or unsupported card";
WarnNotify("Warning|" + msg);
}
}
if (tag != null)
{
this.BeginInvoke(new OnTagReadInvoker(OnTagRead), tag);
}
else
{
this.BeginInvoke(new OnErrorInvoker(OnError), msg, "This is not a valid NFC Tag");
}
}
catch (Exception ex)
{
ErrorHandler.TreatError(ex);
}
}
void BtnWriteClick(object sender, EventArgs e)
{
if (control == null)
{
return;
}
NfcTag nfcTag = null;
SCardChannel channel = new SCardChannel(reader);
if (!channel.Connect())
{
MessageBox.Show("Failed to connect to the card.");
return;
}
if (rbType2.Checked)
{
if (NfcTagType2.Recognize(channel))
{
Trace.WriteLine("This card is a NFC type 2 Tag");
nfcTag = NfcTagType2.Create(channel);
}
else
{
Trace.WriteLine("This card is not a NFC type 2 Tag, sorry");
}
}
else
if (rbType4.Checked)
{
if (NfcTagType4.Recognize(channel))
{
Trace.WriteLine("This card is a NFC type 4 Tag");
nfcTag = NfcTagType4.Create(channel);
}
else
{
Trace.WriteLine("This card is not a NFC type 4 Tag, sorry");
}
}
if (nfcTag == null)
{
channel.Disconnect();
MessageBox.Show("This card is not supported. Are you sure the emulution mode is running?");
return;
}
if (!nfcTag.IsFormatted())
{
channel.Disconnect();
MessageBox.Show("The card is not formatted as a NFC Tag.");
return;
}
nfcTag.Content.Clear();
Ndef ndef = control.GetContent();
nfcTag.Content.Add(ndef);
if (!nfcTag.Write(true))
{
channel.Disconnect();
MessageBox.Show("Failed to write the NFC Tag.");
return;
}
channel.Disconnect();
}
