what is connection code of Biomatric finger print in c# (Asp.net) to system.

Q- what is connection code of Biomatric finger print in c# (Asp.net) to system.
Q- how to connect a Biomatric fingerprint machine connection code in c# Application, windoapplication. send me connection code of biomatric fingerprint machine
my problem---> Problem - Device can not connect to system
Error -
Catastrophic failure (Exception from HRESULT: 0x8000FFFF (E_UNEXPECTED))



my code id---->

public partial class Form1 : Form
{

bool checkcoon1 = true;
// bool checkcon2 = false;
public Form1()
{
InitializeComponent();
}

public void connect()
{
SBXPC ob = new SBXPC();

int dwMachinNumber=1;
string lpipAddress="192.168.000.224";
int dwportnumber=5005;
int dwpassword=0;
checkcoon1 = ob.ConnectTcpip(dwMachinNumber,lpipAddress,dwportnumber,dwpassword);
if(checkcoon1==true)
{
MessageBox.Show("connection successful estabalished");
}
else
{
MessageBox.Show("connection cannot estabalished");
}

}

private void textBox2_TextChanged(object sender, EventArgs e)
{

}

private void button1_Click(object sender, EventArgs e)
{
connect();
}
}
}