C#

private void syncbut_Click(object sender, EventArgs e)
{
    Thread syncThread = new Thread(new ThreadStart(dosync));
    syncThread.Start();
}

private void dosync()
{
    int filePathList = listView1.Items[0].Index;
}

using System;<br />
using System.Collections.Generic;<br />
using System.Text;<br />
using System.Runtime.InteropServices;<br />
using System.Windows.Forms;<br />
<br />
namespace EnumerateSingle<br />
{<br />
    public struct EditStream<br />
    {<br />
        public long dwCookie;<br />
        public long dwError;<br />
        public Delegate pfnCallback;<br />
    }<br />
    <br />
    class RichEditC<br />
    {<br />
        public const long WM_USER = 0x400; <br />
        public const long EM_STREAMIN = (WM_USER + 73); <br />
        public const long EM_STREAMOUT  = (WM_USER + 74);<br />
        public const long SF_TEXT = 0x1 ;<br />
        public const long SF_RTF = 0x2;<br />
        public const long SF_RTFNOOBJS  = 0x3; <br />
        public const long SF_TEXTIZED = 0x4;<br />
        public const long SF_UNICODE = 0x10; <br />
        public const long SF_USECODEPAGE  = 0x20;<br />
        public const long SF_NCRFORNONASCII = 0x40;<br />
<br />
        public delegate long RTFCallback(long dwCookie, long pbBuff, long cb, long pcb);<br />
<br />
        public string buffText;<br />
<br />
        [DllImport("User32.dll")]<br />
        public static extern long SendMessage(long hWnd, long wMsg, long wParam, ref EditStream lParam);<br />
                <br />
        [DllImport("User32.dll")]<br />
        public static extern void CopyMemory(object Destination, object source, long length);<br />
<br />
        public static long EditStreamCallback(long dwCookie, long pbBuff, long cb, long pcb)<br />
        {<br />
            StringBuilder buff = new StringBuilder((int)cb);<br />
            <br />
<br />
            switch(dwCookie)<br />
            {<br />
            case 999:<br />
                {<br />
                    CopyMemory(buff, pbBuff, cb);<br />
                    pcb = cb;<br />
                    return 0;<br />
                   <br />
                }<br />
            default:<br />
                {<br />
                    return -1;<br />
                    <br />
                }<br />
<br />
            }<br />
        }<br />
    }<br />
}

        private void button3_Click(object sender, EventArgs e)<br />
        {<br />
            RichEditC.RTFCallback myRtfCallback = new RichEditC.RTFCallback(RichEditC.EditStreamCallback);<br />
            <br />
            EditStream es = new EditStream();<br />
            es.dwCookie = 999;<br />
            es.pfnCallback = myRtfCallback;<br />
<br />
            //Error------------------------------------------------------------------------><br />
            RichEditC.SendMessage(0x80524, RichEditC.EM_STREAMOUT, RichEditC.SF_TEXT, ref es);<br />
<br />
        }<br />
<br />
        public long FARPROC(long pfn)<br />
        {<br />
            return pfn;<br />
        }

public byte[] TransformFinalBlock(byte[] inputBuffer, int inputOffset, int inputCount)
{
    if (VigBinTransformType == Transform.Null)
        throw new NullReferenceException();
    if (inputBuffer == null)
        throw new ArgumentNullException();
    if (inputBuffer.Length < inputOffset + inputCount)
        throw new ArgumentException();

    Byte[] outputBuffer = new Byte[inputCount];
    int outputOffset = 0;

    for (int i = 0; i < inputCount; i++)
    {
        Byte[] newBytes = Encoding.UTF8.GetBytes(VigBinEncDec.BothStrEncrypt(Encoding.UTF8.GetString(new byte[] { inputBuffer[inputOffset + i] }), key));
        if (VigBinTransformType == Transform.Decrypt)
            newBytes = Encoding.UTF8.GetBytes(VigBinEncDec.BothStrDecrypt(Encoding.UTF8.GetString(new byte[] { inputBuffer[inputOffset + i] }), key));

        outputBuffer[outputOffset] = newBytes[0];
        outputOffset++; // IndexOutOfRangeException!!!
    }

    return outputBuffer;
}