public static byte[] ReadWithRetry(CAENRFIDTag tag, short memBank,
short address, short length)
{
int retry_count = 0;
bool retry = true;
byte[] result = null;
while (retry)
{
try
{
result = tag.Source.ReadTagData_EPC_C1G2(tag, memBank,
address, length);
retry = false;
}
catch (CAENRFIDException err)
{
retry_count++;
if (retry_count == MAX_RETRY)
{
retry = false;
}
}
}
return(result);
}
private void timerRecord_Tick(object sender, EventArgs e)
{
try
{
string EPC;
int scanStatus = 0;
CAENRFIDTag[][] MyTags = new CAENRFIDTag[4][];
if (checkBox0.Checked == true)
{
CAENRFIDLogicalSource MySource = MyReader.GetSource("Source_0");
MyTags[0] = MySource.InventoryTag(new byte[] { }, 0, 0, (short)1); //All tag with rssi
}
if (checkBox1.Checked == true)
{
CAENRFIDLogicalSource MySource1 = MyReader.GetSource("Source_1");
MyTags[1] = MySource1.InventoryTag(new byte[] { }, 0, 0, (short)1);
}
if (checkBox2.Checked == true)
{
CAENRFIDLogicalSource MySource2 = MyReader.GetSource("Source_2");
MyTags[2] = MySource2.InventoryTag(new byte[] { }, 0, 0, (short)1);
}
if (checkBox3.Checked == true)
{
CAENRFIDLogicalSource MySource3 = MyReader.GetSource("Source_3");
MyTags[3] = MySource3.InventoryTag(new byte[] { }, 0, 0, (short)1);
}
for (int i = 0; i < 4; i++)
{
if (MyTags[i] != null)
{
if (MyTags[i].Length > 0)
{
for (int j = 0; j < MyTags[i].Length; j++)
{
EPC = BitConverter.ToString(MyTags[i][j].GetId());
foreach (ListViewItem item in this.listViewInventory.Items)
{
if (item.Text.Equals(EPC)) // if the tags is read before , we do not search in datebase
{
scanStatus++;
}
}
if (scanStatus == 0)
{
scanner_datebase(EPC,MyTags[i][j]);
}
}
}
}
}
}
catch
{
CheckTotTagsTimer.Stop();
timerRecord.Stop();
toolStripStatusLabelMain.Text = "Record stop! ";
buttonStart.Text = "start record";
}
}
private void scanner_datebase(string id, CAENRFIDTag tag)
{
int Flags =0;
string idTags = "";
string prenom = "";
string nom = "";
string No = "";
string major = "";
try
{
OleDbCommand sqlcmd = new OleDbCommand(@"SELECT * FROM infos WHERE ID = '" + id + "'", objConnection);
using (OleDbDataReader reader = sqlcmd.ExecuteReader())
{
if (reader.Read()) // s'il existe dans base de donnee, on l'ajoute dans le ListViewInventory
{
idTags = reader["ID"].ToString();
prenom = reader["prenomStu"].ToString();
nom = reader["nomStu"].ToString();
No = reader["NumberStu"].ToString();
major = reader["MajorStu"].ToString();
ListViewItem lvi = new ListViewItem(new string[] { idTags, prenom, nom, No, major, DateTime.Now.ToString(), tag.GetReadPoint() });
lvi.Tag = reader;
listViewInventory.Items.Add(lvi);
}
else // sinon on demande pour enregistrer par une fenetre FormAlert
{
if (!SessionList.Contains(id))
{
SessionList.Add(id);
}
else
{
Flags++;
}
if(Flags == 0)
{
FormAlert fa = new FormAlert();
fa.Owner = this;
fa.StartPosition = FormStartPosition.CenterScreen;
fa.labelAlertID.Text = id;
fa.ShowDialog();
}
}
}
}
catch
{
}
}
public static bool WriteTag(CAENRFIDTag tag, MemoryBankType MemType, int nStartAddr, int nLength, byte[] data)
{
try
{
source.WriteTagData_EPC_C1G2(tag, (short)MemType, (short)nStartAddr, (short)nLength, data);
return true;
}
catch
{
return false;
}
}
public static bool ReadTag(CAENRFIDTag tag, MemoryBankType MemType, int nStartAddr, int nLength, out byte[] data)
{
try
{
data = source.ReadTagData_EPC_C1G2(tag, (short)MemType, (short)nStartAddr, (short)nLength);
}
catch
{
data = null;
return false;
}
return true;
}
public static bool GetSelectedTag(out CAENRFIDTag tag)
{
try
{
CAENRFIDTag[] tags;
tags = source.InventoryTag();
if (tags != null)
{
tag = tags[0];
return true;
}
else
{
tag = null;
return false;
}
}
catch
{
tag = null;
return false;
}
}
