// -----------------------------------------------------------------------------------
// Main functions for fingerprint recognition management
// -----------------------------------------------------------------------------------
// Initializes GrFinger ActiveX and all necessary utilities.
public int InitializeGrFinger()//GrFingerXLib.GrFingerXCtrl grfingerx)
{
int result = 0;
axGrFingerXCtrl = new GrFingerXCtrl();
//axGrFingerXCtrl = grfingerx;
////Create a new Template
if (FPTemplate == null)
{
FPTemplate = new FingerPrintTemplate();
}
////Create a new raw image
RawFPImg = new RawFingerPrintImage();
//Initialize library
result = axGrFingerXCtrl.Initialize();
if (result < 0)
{
return(result);
}
//return (int)axGrFingerXCtrl.CapInitialize();
return(0);
}
// Identify current fingerprint on our database
public long Identify(ref int score)
{
GRConstants result;
FingerPrintTemplate tptRef;
// Checking if template is valid.
if (!TemplateIsValid())
{
return((long)ERR_INVALID_TEMPLATE);
}
// Starting identification process and supplying query template.
result = (GRConstants)axGrFingerXCtrl.IdentifyPrepare(ref FPTemplate.ImageData,
(int)GRConstants.GR_DEFAULT_CONTEXT);
// error?
if (result < 0)
{
return((long)result);
}
// Getting enrolled templates from database.
var cmd = "SELECT [MemberFingerPrintID],[MemberID],[FingerPrint1],[FingerPrint2] FROM [MemberFingerPrints]";
using (var r = SqlHelper.ExecuteReader(cmd))
{
while (r.Read())
{
long readBytes;
byte[] temp;
if (!r.IsDBNull(2))
{
temp = new byte[10000];
readBytes = r.GetBytes(2, 0, temp, 0, temp.Length);
tptRef = new FingerPrintTemplate();
System.Array.Copy(temp, 0, tptRef.ImageData, 0, (int)readBytes);
// Comparing current template.
result = (GRConstants)axGrFingerXCtrl.Identify(ref tptRef.ImageData, ref score, (int)GRConstants.GR_DEFAULT_CONTEXT);
// Checking if query template and the reference template match.
if (result == GRConstants.GR_MATCH)
{
//memFP.MemberFingerPrintID = ds.DataReader.GetInt64(0);
//memFP.MemberID = ds.DataReader.GetInt64(1);
//ds.Dispose();
return(-1); //memFP.MemberID;
}
}
if (!r.IsDBNull(3))
{
temp = new byte[10000];
readBytes = r.GetBytes(3, 0, temp, 0, temp.Length);
tptRef = new FingerPrintTemplate();
System.Array.Copy(temp, 0, tptRef.ImageData, 0, (int)readBytes);
result = (GRConstants)axGrFingerXCtrl.Identify(ref tptRef.ImageData, ref score, (int)GRConstants.GR_DEFAULT_CONTEXT);
if (result == GRConstants.GR_MATCH)
{
//memFP.MemberFingerPrintID = ds.DataReader.GetInt64(0);
//memFP.MemberID = ds.DataReader.GetInt64(1);
//ds.Dispose();
return(-1); //memFP.MemberID;
}
}
}
}
//ds.Dispose();
// Closing recordset.
return((long)GRConstants.GR_NOT_MATCH);
}
