Missing first 2 charcters of file name in win ce(.net cf 2.0) using findfirstfile

[gudiya]

hi,

My code works but i am missing the first 2 characters of file name.
Any idea why????

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Runtime.InteropServices;
using System.Threading;
 
 
namespace dummy2
{
    public partial class Form1 : Form
    {
        int rfidTagHandle;
        Win32Methods.WIN32_FIND_DATA FindFileData;
 
 
 
        public Form1()
        {
            InitializeComponent();
        }
 
        private void button1_Click(object sender, EventArgs e)
        {
 
            rfidTagHandle = Win32Methods.FindFirstFile("\\*.*", out FindFileData);
            //"\\RFID\\[.]"
            if (rfidTagHandle == Win32Methods.INVALID_HANDLE_VALUE)
            {
                MessageBox.Show("FindFirstFile failed");
 
            }
            else
            {
 
                //Byte[] fileName =FindFileData.cFileName;
                //string filen = System.Text.UnicodeEncoding.Unicode.GetString(fileName, 0, fileName.Length);
                //StringBuilder cb = new StringBuilder(256);
                //cb = FindFileData.cFileName;
                string filen = FindFileData.cFileName;
                textBox1.Text = textBox1.Text + filen + "\r\n";
            }
 
            while (Win32Methods.FindNextFile(rfidTagHandle, out FindFileData) != false)
            {
                //Byte[] fileName = FindFileData.cFileName;
                //string filen = System.Text.UnicodeEncoding.Unicode.GetString(fileName, 0, fileName.Length);
                //StringBuilder cb = new StringBuilder(256);
                //cb = FindFileData.cFileName;
                string filen = FindFileData.cFileName;
                textBox1.Text = textBox1.Text + filen + "\r\n";
 
 
            }
            MessageBox.Show("FindnextFile failed");
            Win32Methods.FindClose(rfidTagHandle);
 
        }
 
 
    }
 
    public class Win32Methods
    {
 
        public const int INVALID_HANDLE_VALUE = -1;
        //, CharSet = CharSet.Unicode
        [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)]
        public struct WIN32_FIND_DATA
        {
            public uint dwFileAttributes;
            public FILETIME ftCreationTime;
            public FILETIME ftLastAccessTime;
            public FILETIME ftLastWriteTime;
            public uint nFileSizeHigh;
            public uint nFileSizeLow;
            public uint dwReserved0;
            public uint dwReserved1;
            [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 260)]
            public string cFileName;
            //[MarshalAs(UnmanagedType.LPStr)]
            //public StringBuilder cFileName;
            //[MarshalAs(UnmanagedType.ByValArray, SizeConst = 260)]
            //public Byte[] cFileName;
            //[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 14)]
            //public string cAlternateFileName;
 
        };
 
        [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)]
        public struct FILETIME
        {
            public uint dwLowDateTime;
            public uint dwHighDateTime;
        };
 
        //Findfirstfile
        [DllImport("coredll.dll", CharSet = CharSet.Auto,SetLastError = true)]
        public static extern int FindFirstFile(string szSearchFile,out WIN32_FIND_DATA lpFindFileData);
 
        //FindNextFile
        [DllImport("coredll.dll",CharSet = CharSet.Auto, SetLastError = true)]
        [return: MarshalAs(UnmanagedType.Bool)]
        public static extern bool FindNextFile(int hFindFile,out WIN32_FIND_DATA lpFindFileData);
        //Findclose
        [DllImport("coredll.dll",CharSet = CharSet.Auto, SetLastError = true)]
        [return: MarshalAs(UnmanagedType.Bool)]
        public static extern bool FindClose(int hFindFile);
    }
 
}

[Plater]

Why are you doing all of that with unmanaged code?
What was wrong with:

Directory.GetFiles(Path, pattern);
 

???
System.IO is still in CF2

[gudiya]

actually I have a handheld reader which has a file system and starts reading rfid tags using the command findfirst file

[Plater]

EDIT: WOW I can't believe I missed that.
You're using a Unicode conversion, it's probably treating the first two characters as the byte-order mark.
Try using the ASCII encoding and see what you get?