Pack String Data to byte array data - CSharp System

CSharp examples for System:Byte Array

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Description

Pack String Data to byte array data

Demo Code


using System.Text;
using System.Security.Cryptography;
using System.Linq;
using System.Collections.Generic;
using System;/*from  w w w .j  a v  a 2 s . c  o  m*/

public class Main{

        public static byte[] PackData(string message)
        {
            byte[] contentBytes = null;
            byte[] temp = Encoding.UTF8.GetBytes(message);
           
            if (temp.Length < 126)
            {
                contentBytes = new byte[temp.Length + 2];
                contentBytes[0] = 0x81;
                contentBytes[1] = (byte)temp.Length;
                Array.Copy(temp, 0, contentBytes, 2, temp.Length);
            }
            else if (temp.Length < 0xFFFF)
            {
                contentBytes = new byte[temp.Length + 4];
                contentBytes[0] = 0x81;
                contentBytes[1] = 126;
                contentBytes[2] = (byte)(temp.Length >> 8);
                contentBytes[3] = (byte)(temp.Length & 0xFF);
                Array.Copy(temp, 0, contentBytes, 4, temp.Length);
            }
            else
            {
                contentBytes = new byte[temp.Length + 10];
                contentBytes[0] = 0x81;
                contentBytes[1] = 127;
                contentBytes[2] = 0;
                contentBytes[3] = 0;
                contentBytes[4] = 0;
                contentBytes[5] = 0;
                contentBytes[6] = (byte)(temp.Length >> 24);
                contentBytes[7] = (byte)(temp.Length >> 16);
                contentBytes[8] = (byte)(temp.Length >> 8);
                contentBytes[9] = (byte)(temp.Length & 0xFF);
                Array.Copy(temp, 0, contentBytes, 10, temp.Length);
            }

            return contentBytes;
        }
}

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