Well, I'm trying to convert a large information in bytes for string. (11076 length)

The problem in the end, the information is with missing characters. (length 10996)

Look:

The information is received by Winsock connection, look the proccess:

    public static void UpdateClient(UserConnection client)
    {
        string data = null;
        Decoder utf8Decoder = Encoding.UTF8.GetDecoder();

            Console.WriteLine("Iniciando");
            byte[] buffer = ReadFully(client.TCPClient.GetStream(), 0);
            int charCount = utf8Decoder.GetCharCount(buffer, 0, buffer.Length);
            Char[] chars = new Char[charCount];
            int charsDecodedCount = utf8Decoder.GetChars(buffer, 0, buffer.Length, chars, 0);

            foreach (Char c in chars)
            {
                data = data + String.Format("{0}", c);
            }

            int buffersize = buffer.Length;
            Console.WriteLine("Chars is: " + chars.Length);
            Console.WriteLine("Data is: " + data);
            Console.WriteLine("Byte is: " + buffer.Length);
            Console.WriteLine("Size is: " + data.Length);
            Server.Network.ReceiveData.SelectPacket(client.Index, data);
    }

    public static byte[] ReadFully(Stream stream, int initialLength)
    {
        if (initialLength < 1)
        {
            initialLength = 32768;
        }

        byte[] buffer = new byte[initialLength];
        int read = 0;

        int chunk;

        chunk = stream.Read(buffer, read, buffer.Length - read);

        checkreach:
            read += chunk;

            if (read == buffer.Length)
            {
                int nextByte = stream.ReadByte();

                if (nextByte == -1)
                {
                    return buffer;
                }

                byte[] newBuffer = new byte[buffer.Length * 2];
                Array.Copy(buffer, newBuffer, buffer.Length);
                newBuffer[read] = (byte)nextByte;
                buffer = newBuffer;
                read++;
                goto checkreach;
            }

        byte[] ret = new byte[read];
        Array.Copy(buffer, ret, read);
        return ret;
    }

Anyone have tips or a solution?