Retrieve and store data to smart card with C# application

[EDN Admin]

HI all,


Im developing a C# thumprint authentication application converting from C++ coding with .dll file and thumbprint card reader.

I unable to store and retrieve the data to the smart card.

C++<span style="font-family:arial
Able store and retrieve data from smart card

    // Verify Password.
    ret = BAPI_VerifyPassword(V_Name, V_Address, V_ID_NUM,"1234567");

    if(ret ==1)
    {
<span style="color:rgb(255,0,0)         cout<<"Genuine User"<<endl;<br style="color:rgb(255,0,0) <span style="color:rgb(255,0,0)         cout<<V_Name<<endl;<br style="color:rgb(255,0,0) <span style="color:rgb(255,0,0)         cout<<V_Address<<endl;<br style="color:rgb(255,0,0) <span style="color:rgb(255,0,0)         cout<<V_ID_NUM<<endl;
    }
    else
    {
        cout<<"PW: Imposter!"<<endl;
    }

////////////////////////////////////////////////////////////////////////

C#
Unable store and retrieve data from smart card


<span style="color:rgb(255,102,0)         int[] EngineVer = new int[1];<br style="color:rgb(255,102,0) <span style="color:rgb(255,102,0)         char[] V_Name = new char[30];<br style="color:rgb(255,102,0) <span style="color:rgb(255,102,0)         char[] V_Address = new char[120];<br style="color:rgb(255,102,0) <span style="color:rgb(255,102,0)         char[] V_ID_NUM = new char[20];


status = BAPI_ImageCapture();
                if (status == 0)
                {
                    MessageBox.Show("Poor Image Captured");
                }
                if (status == 1)
                {
            <span style="font-weight:bold;color:rgb(255,0,0)         status = BAPI_Verification(0, V_Name, V_Address, V_ID_NUM);

                    if (status == 1)
                    {
                        MessageBox.Show("Genuine User");
                        this.Hide();
                        frmStaffId StaffId = new frmStaffId("*");
                        StaffId.Show();
                    }
                    else
                    {
                        MessageBox.Show("Improster");
                    }
                }
            }


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