7-7

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

namespace Attendance.Common
{
    public struct TemplateDataStruct //608
    {
        public ushort TemplateSize;

        public ushort PIN;

        public byte FingerID;

        public byte Valid;

        [MarshalAs(UnmanagedType.ByValArray, SizeConst = 602)]
        public byte[] Template;

    }

    public class USB_TemplateData
    {

        public static List<TemplateDataStruct> ReadFromUSB()
        {
            List<TemplateDataStruct> rtn = null;
            int size = 608;
            //Find usb driver
            string filename = @"C:/Documents and Settings/cs44689/Desktop/u2/u2/template.dat";
            //foreach (System.IO.DriveInfo di in System.IO.DriveInfo.GetDrives())
            //{
            //    if (di.DriveType == DriveType.Removable && di.IsReady)
            //    {
            //        if (System.IO.File.Exists(di.RootDirectory.FullName + "user.dat"))
            //        {
            //            filename = di.RootDirectory.FullName + "user.dat";
            //            break;
            //        }
            //    }
            //}

            if (filename.Length > 0)
            {
                rtn = new List<TemplateDataStruct>();
                using (FileStream fs = File.Open(filename, FileMode.Open))
                {
                    System.IO.BinaryReader br = new System.IO.BinaryReader(fs);
                    byte[] buf = new byte[fs.Length];
                    br.Read(buf, 0, (int)fs.Length);

                    for (int i = 0; i < buf.Length; i = (i + 1) * size)
                    {
                        IntPtr ptr = Marshal.AllocHGlobal(size);
                        Marshal.Copy(buf, i, ptr, size);
                        TemplateDataStruct ud = (TemplateDataStruct)Marshal.PtrToStructure(ptr, typeof(TemplateDataStruct));

                        rtn.Add(ud);
                    }
                    br.Close();
                }

            }

            return rtn;

        }

    }
}