我在SQL Server中存储fpt模板时遇到了麻烦。
这是我的代码：
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.IO;
//imports
using DHELTASSys.AuditTrail;
using DHELTASSys.Modules;
namespace Enrollment
{
delegate void Function(); // a simple delegate for marshalling calls from event handlers to the GUI thread
public partial class CreateAccount : Form
{
HRModuleBL obj = new HRModuleBL();
DHELTASSysAuditTrail audit = new DHELTASSysAuditTrail();
public CreateAccount(int emp_id)
{
InitializeComponent();
audit.Emp_id = emp_id;
}
protected void EmptyFields()
{
}
private void CloseButton_Click(object sender, EventArgs e)
{
Close();
}
private void OnTemplate(DPFP.Template template)
{
this.Invoke(new Function(delegate()
{
Template = template;
VerifyButton.Enabled = SaveButton.Enabled = (Template != null);
if (Template != null)
MessageBox.Show("The fingerprint template is ready for verification and saving", "Fingerprint Enrollment");
else
MessageBox.Show("The fingerprint template is not valid. Repeat fingerprint enrollment.", "Fingerprint Enrollment");
}));
}
private DPFP.Template Template;
private void EnrollButton_Click(object sender, EventArgs e)
{
EnrollmentForm Enroller = new EnrollmentForm();
Enroller.OnTemplate += this.OnTemplate;
Enroller.ShowDialog();
}
private void SaveButton_Click(object sender, EventArgs e)
{
obj.Last_name = txtLastname.Text;
obj.First_name = txtFirstName.Text;
obj.Middle_name = txtMiddleName.Text;
obj.Position_name = cmbPosition.Text;
obj.Company_name = cmbCompany.Text;
obj.Password = txtTempPassword.Text;
obj.Department_name = cmbDepartment.Text;
if (obj.Last_name == string.Empty) //Validation for empty texts
{
MessageBox.Show("Last name can't be empty!");
} else if (obj.First_name == string.Empty)
{
MessageBox.Show("First name can't be empty!");
}
else if (obj.Middle_name == string.Empty)
{
MessageBox.Show("Middle name can't be empty!");
}
else if (obj.Position_name == string.Empty)
{
MessageBox.Show("Position name can't be empty!");
}
else if (obj.Department_name == string.Empty)
{
MessageBox.Show("Deparment can't be empty!");
}
else if (obj.Company_name == string.Empty)
{
MessageBox.Show("Company name can't be empty!");
}
else if (obj.Password == string.Empty)
{
MessageBox.Show("Password can't be empty!");
}
else if (txtConfirmTempPassword.Text == string.Empty)
{
MessageBox.Show("Please verify your input password!");
}
else
{
if (txtTempPassword.Text != txtConfirmTempPassword.Text)
{
MessageBox.Show("Password does not match", "Password Mismatch",
MessageBoxButtons.OK);
}
else
{
MemoryStream fingerprintData = new MemoryStream();
Template.Serialize(fingerprintData);
fingerprintData.Position = 0;
BinaryReader br = new BinaryReader(fingerprintData);
byte[] bytes = br.ReadBytes((Int32)fingerprintData.Length);
obj.Biometric_code = bytes;
obj.AddAccountSetTempPassword();
audit.AddAuditTrail("Created account for " + obj.First_name + " " + obj.Last_name + ".");
MessageBox.Show("Account Created for " + txtLastname.Text + "," + txtFirstName.Text);
txtConfirmTempPassword.Text = "";
txtFirstName.Text = "";
txtLastname.Text = "";
txtMiddleName.Text = "";
txtTempPassword.Text = "";
cmbCompany.Text = "";
cmbDepartment.Text = "";
cmbPosition.Text = "";
}
}
}
private void VerifyButton_Click(object sender, EventArgs e)
{
VerificationForm Verifier = new VerificationForm();
Verifier.Verify(Template);
}
}
}
其中我已经为用于向SQL Server插入数据的类启动了对象obj。
使用AddAccountSetTempPassword()方法，我将数据存储到数据库中。
问题是，当我查看数据库时，所有指纹数据的图像字段都写为0x53797374656D2E427974655B5D。
更新＃1 这是我用来将数据插入数据库的类。
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
//Imports
using System.Data;
using DHELTASSys.DataAccess;
using DHELTASSys.AuditTrail;
namespace DHELTASSys.Modules
{
class HRModuleBL
{
DHELTASSysAuditTrail audit = new DHELTASSysAuditTrail();
private int emp_id;
public int Emp_id
{
get { return emp_id; }
set { emp_id = value; }
}
private string password;
public string Password
{
get { return password; }
set { password = value; }
}
private string last_name;
public string Last_name
{
get { return last_name; }
set { last_name = value; }
}
private string first_name;
public string First_name
{
get { return first_name; }
set { first_name = value; }
}
private string middle_name;
public string Middle_name
{
get { return middle_name; }
set { middle_name = value; }
}
private string position_name;
public string Position_name
{
get { return position_name; }
set { position_name = value; }
}
private string company_name;
public string Company_name
{
get { return company_name; }
set { company_name = value; }
}
private string email;
public string Email
{
get { return email; }
set { email = value; }
}
private string gender;
public string Gender
{
get { return gender; }
set { gender = value; }
}
private string address;
public string Address
{
get { return address; }
set { address = value; }
}
private string primary_Number;
public string Primary_Number
{
get { return primary_Number; }
set { primary_Number = value; }
}
private string alternative_Number;
public string Alternative_Number
{
get { return alternative_Number; }
set { alternative_Number = value; }
}
private string city;
public string City
{
get { return city; }
set { city = value; }
}
private DateTime birthdate;
public DateTime Birthdate
{
get { return birthdate; }
set { birthdate = value; }
}
private int sss_Number;
public int Sss_Number
{
get { return sss_Number; }
set { sss_Number = value; }
}
private int philHealth_number;
public int Philhealth_number
{
get { return philHealth_number; }
set { philHealth_number = value; }
}
private byte[] biometric_code;
public byte[] Biometric_code
{
get { return biometric_code; }
set { biometric_code = value; }
}
private string employee_status;
public string Employee_status
{
get { return employee_status; }
set { employee_status = value; }
}
private int company_id;
public int Company_id
{
get { return company_id; }
set { company_id = value; }
}
private string department_name;
public string Department_name
{
get { return department_name; }
set { department_name = value; }
}
//Methods
//Create account and set temporary password for employee
public void AddAccountSetTempPassword()
{
if (Position_name == "Supervisor") //If employee is supervisor
{
string cmd = "EXECUTE AddAccountSetTempPassword '" + Password + "',"
+ "'" + Last_name + "',"
+ "'" + First_name + "',"
+ "'" + Middle_name + "',"
+ "'" + Position_name + "',"
+ "'" + Company_name + "',"
+ "'" + Department_name + "',"
+ "'" + Biometric_code + "'";
DHELTASSysDataAccess.Modify(cmd);
string cmdTwo = "Execute AddSupervisor";
DHELTASSysDataAccess.Modify(cmdTwo);
}
else //If employee isn't a supervisor
{
string cmd = "EXECUTE AddAccountSetTempPassword '" + Password + "',"
+ "'" + Last_name + "',"
+ "'" + First_name + "',"
+ "'" + Middle_name + "',"
+ "'" + Position_name + "',"
+ "'" + Company_name + "',"
+ "'" + Department_name + "',"
+ "'" + Biometric_code + "'";
DHELTASSysDataAccess.Modify(cmd);
}
}
//Employee will enter permanent password for account
public void AddPermanentPasswordForAccount()
{
string cmd = "EXECUTE AddPermanentPasswordForAccount"
+ "'" + Password + "',"
+ "'" + Emp_id + "',";
DHELTASSysDataAccess.Modify(cmd);
//DHELTASSysAuditTrail.AddAuditTrail( "Changed password.");
}
//Employee adds his/her account details
public void AddAccountDetails()
{
string cmd = "EXECUTE AddAccountDetails"
+ "'" + Email + "',"
+ "'" + Gender + "',"
+ "'" + Address + "',"
+ "'" + Primary_Number + "',"
+ "'" + Alternative_Number + "',"
+ "'" + City + "',"
+ "'" + Birthdate + "',"
+ "'" + Sss_Number + "',"
+ "'" + Philhealth_number + "',"
+ "'" + Emp_id + "'";
DHELTASSysDataAccess.Modify(cmd);
//DHELTASSysAuditTrail.AddAuditTrail("Account details updated.");
}
//Displays all employees' information
public DataTable ViewEmployeeInformation()
{
string cmd = "EXECUTE ViewEmployeeInformation"
+ "'" + Company_id + "'";
DataTable dtEmployees = DHELTASSysDataAccess.Select(cmd);
return dtEmployees;
}
//Verifies account login in the forms application
public DataTable AccountEnrollmentLogin()
{
string cmd = "EXECUTE AccountEnrollmentLogin"
+ "'" + Emp_id + "',"
+ "'" + Password + "'";
DataTable dt = DHELTASSysDataAccess.Select(cmd);
return dt;
}
//Check if HR Manager
public DataTable CheckIfHRManager()
{
string cmd = "EXECUTE CheckIfHRManager"
+ "'" + Emp_id + "'";
DataTable dt = DHELTASSysDataAccess.Select(cmd);
return dt;
}
}
}
表格如下：
table : employee
emp_id->int->PK
password->nvarchar(MAX)
last_name->varchar(50)
first_name->varchar(50)
middle_name->varchar(50)
position_id->int->FK
department_id->int->FK
company_id->int->FK
email_address->varchar(50)
gender->varchar(10)
address->varchar(100)
primary_contact_number->varchar(20)
alternative_contact_number->varchar(20)
city->varchar(50)
birthdate->date
sssNumber->int
philhealth_number->int
employee_status->bit
biometrics_image->image
我希望将模板转换为字节以将其保存到数据库中。 提前谢谢。