C# WinCE-App: problem in marshal findfirstfile in c# win ce device

[gudiya]

hello everybody

I am having a very wierd problem.i am developing a win ce applicationin which I am marshalling win ap function findfirstfile and findnextfile in c# .My problem is it reads the file name but it misses the first 2 characters of each file name.I have no idea why .Please help.

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;
 
 
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)
        {
            //for (int i = 0; i <= 2; i++)
            //{
            rfidTagHandle = Win32Methods.FindFirstFile("*.*", out FindFileData);
                //"\\RFID\\[.]"
                if (rfidTagHandle == Win32Methods.INVALID_HANDLE_VALUE)
                {
                    MessageBox.Show("FindFirstFile failed");
 
                }
                else
                {
 
                    String fileName = FindFileData.cFileName;
                    //MessageBox.Show("File name length is" + FindFileData.cFileName.Length.ToString());
                    //textBox1.Text = "Application" + "\r\n";
                    textBox1.Text = textBox1.Text + fileName + "\r\n";
                }
 
                while (Win32Methods.FindNextFile(rfidTagHandle, out FindFileData) != false)
                {
                    String fileName = FindFileData.cFileName;
                    textBox1.Text = textBox1.Text + fileName + "\r\n";
                    //MessageBox.Show("next File name is" + fileName);
                    //listView1.Items.Add(fileName); 
 
                }
                MessageBox.Show("FindnextFile failed");
                Win32Methods.FindClose(rfidTagHandle);
           // }
        }
    }
 
    public class Win32Methods
    {
 
        public const int INVALID_HANDLE_VALUE = -1;
 
        [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
        public struct WIN32_FIND_DATA
        {
            public int dwFileAttributes;
            public FILETIME ftCreationTime;
            public FILETIME ftLastAccessTime;
            public FILETIME ftLastWriteTime;
            public int nFileSizeHigh;
            public int nFileSizeLow;
            public int dwReserved0;
            public int dwReserved1;
            [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 256)]
            public string cFileName;
            //[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 14)]
            //public string cAlternateFileName;
 
        };
 
        [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
        public struct FILETIME
        {
            public uint dwLowDateTime;
            public uint dwHighDateTime;
        };
 
        //Findfirstfile
        [DllImport("coredll", CharSet = CharSet.Unicode, SetLastError = true)]
        public static extern int FindFirstFile(string szSearchFile, out WIN32_FIND_DATA lpFindFileData);
 
        //FindNextFile
        [DllImport("coredll", CharSet = CharSet.Unicode, SetLastError = true)]
        [return: MarshalAs(UnmanagedType.Bool)]
        public static extern bool FindNextFile(int hFindFile,out WIN32_FIND_DATA lpFindFileData);
        //Findclose
        [DllImport("coredll", CharSet = CharSet.Unicode)]
        [return: MarshalAs(UnmanagedType.Bool)]
        public static extern bool FindClose(int hFindFile);
    }
 
}
 

thanks in advance

[gudiya]

I also want to mention the same code when i make as normal c# windows application(not pocket pc) it works.Please help.It's urgent