CrednetStructs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Runtime.InteropServices;

namespace QueryCrednet
{
    public static class CrednetStructs
    {
        [StructLayout (LayoutKind.Sequential, CharSet = CharSet.Ansi, Pack = 1)]
        public struct InputLayout
        {
            [MarshalAs (UnmanagedType.ByValArray, SizeConst = 4 )]
            public char[] m_transactionCode ; // RE01

            [MarshalAs (UnmanagedType.ByValArray, SizeConst = 4)]
            public char[] m_contractedTransactionCode ; // RX21

            [MarshalAs (UnmanagedType.ByValArray, SizeConst = 12)]
            public char[] m_releaseCode ;  // VERSAO-02.09

            [MarshalAs (UnmanagedType.ByValArray, SizeConst = 16)]
            public char[] m_accessKey ; // LOGON (08) + PASSWORD (08)

            [MarshalAs (UnmanagedType.ByValArray, SizeConst = 15)]
            public char[] m_userDocument ; // DOCUMENT(9) + ZEROS(4) + DIGITS(2)

            [MarshalAs (UnmanagedType.ByValArray, SizeConst = 6)]
            public char[] m_stationCode ;

            [MarshalAs (UnmanagedType.ByValArray, SizeConst = 1)]
            public char[] m_accessMethod ; // 1 = String de dados, 2 = HOST to HOST

            [MarshalAs (UnmanagedType.ByValArray, SizeConst = 4)]
            public char[] m_callingMethod ; // Fill only if accessMethod = 2

            [MarshalAs (UnmanagedType.ByValArray, SizeConst = 30)]
            public char[] m_reservedArea ; // Area reserved for Serasa use

            [MarshalAs (UnmanagedType.ByValArray, SizeConst = 1)]
            public char[] m_documentType ; // F = Fisica , J = Juridica

            [MarshalAs (UnmanagedType.ByValArray, SizeConst = 15)]
            public char[] m_documentToQuery ;

            [MarshalAs (UnmanagedType.ByValArray, SizeConst = 2)]
            public char[] m_queryOptions; // CH, PP or PR

            [MarshalAs (UnmanagedType.ByValArray, SizeConst = 1)]
            public char[] m_dataIdentification; // 0 , 1 ou 2

            [MarshalAs (UnmanagedType.ByValArray, SizeConst = 3)]
            public char[] m_bankCode;

            [MarshalAs (UnmanagedType.ByValArray, SizeConst = 4)]
            public char[] m_agencyNumber ;

            [MarshalAs (UnmanagedType.ByValArray, SizeConst = 15)]
            public char[] m_accountNumber ;

            [MarshalAs (UnmanagedType.ByValArray, SizeConst = 6)]
            public char[] m_initialCheckNumber;

            [MarshalAs (UnmanagedType.ByValArray, SizeConst = 1)]
            public char[] m_initialCheckDigit;

            [MarshalAs (UnmanagedType.ByValArray, SizeConst = 6)]
            public char[] m_finalCheckNumber;

            [MarshalAs (UnmanagedType.ByValArray, SizeConst = 1)]
            public char[] m_finalCheckDigit;

            [MarshalAs (UnmanagedType.ByValArray, SizeConst = 30)]
            public char[] m_initialCMC7 ;

            [MarshalAs (UnmanagedType.ByValArray, SizeConst = 30)]
            public char[] m_finalCMC7;

            [MarshalAs (UnmanagedType.ByValArray, SizeConst = 15)]
            public char[] m_checkValue;

            [MarshalAs (UnmanagedType.ByValArray, SizeConst = 8)]
            public char[] m_endingDate;

            [MarshalAs (UnmanagedType.ByValArray, SizeConst = 4)]
            public char[] m_DDDNumber ;

            [MarshalAs (UnmanagedType.ByValArray, SizeConst = 8)]
            public char[] m_phoneNumber;

            [MarshalAs (UnmanagedType.ByValArray, SizeConst = 9)]
            public char[] m_CEP;

            [MarshalAs (UnmanagedType.ByValArray, SizeConst = 2)]
            public char[] m_UF;

            [MarshalAs (UnmanagedType.ByValArray, SizeConst = 46)]
            public char[] m_reservedForExpansion;

            [MarshalAs (UnmanagedType.ByValArray, SizeConst = 1)]
            public char[] m_headerEnding ;


            public InputLayout (string logon, string password,string docNumber,string docType = "F")
            {
                m_transactionCode           = "RE01".ToCharArray();
                m_contractedTransactionCode = "RX21".ToCharArray ();
                m_releaseCode               = "VERSAO-02.09".ToCharArray ();
                m_accessKey                 = "9378863723022012".ToCharArray ();
                m_userDocument              = "107530217000006".ToCharArray (); // My CPF
                m_stationCode               = new String (' ',6).ToCharArray ();
                m_accessMethod              = "1".ToCharArray ();
                m_callingMethod             = new String (' ', 4).ToCharArray ();
                m_reservedArea              = new String (' ', 30).ToCharArray ();
                m_documentType              = "F".ToCharArray ();
                m_documentToQuery           = "000010753021706".ToCharArray ();
                m_queryOptions              = "PP".ToCharArray ();
                m_dataIdentification        = "0".ToCharArray ();
                m_bankCode                  = new String (' ', 3).ToCharArray ();
                m_agencyNumber              = new String (' ', 4).ToCharArray ();
                m_accountNumber             = new String (' ', 15).ToCharArray ();
                m_initialCheckNumber        = new String (' ', 6).ToCharArray ();
                m_initialCheckDigit         = new String (' ', 1).ToCharArray ();
                m_finalCheckNumber          = new String (' ', 6).ToCharArray ();
                m_finalCheckDigit           = new String (' ', 1).ToCharArray ();
                m_initialCMC7               = new String (' ', 30).ToCharArray ();
                m_finalCMC7                 = new String (' ', 30).ToCharArray ();
                m_checkValue                = new String (' ', 15).ToCharArray ();
                m_endingDate                = new String (' ', 8).ToCharArray ();
                m_DDDNumber                 = new String (' ', 4).ToCharArray ();
                m_phoneNumber               = new String (' ', 8).ToCharArray ();
                m_CEP                       = new String (' ', 9).ToCharArray ();
                m_UF                        = new String (' ', 2).ToCharArray ();
                m_reservedForExpansion      = new String (' ', 46).ToCharArray ();
                m_headerEnding              = new String (' ', 1).ToCharArray ();

            }
        }


        public static string StructureToString (Object bodyMessage)
        {
            byte[] bodyBuffer ;
            bodyBuffer = new byte[Marshal.SizeOf(bodyMessage)];

            GCHandle handle = GCHandle.Alloc(bodyBuffer, GCHandleType.Pinned);
            try
            {
                Marshal.StructureToPtr(bodyMessage, handle.AddrOfPinnedObject(), false);

                return Encoding.ASCII.GetString (bodyBuffer, 0, bodyBuffer.Length);
            }
            finally
            {
                handle.Free();
            }
        }

    }
}