C#字节数组(byte[])和字符串相互转换方式_开发_开发者

C#字节数组(byte[])和字符串相互转换

通过C#中的system.text.encoding获取字符串的编码可以有ASCII,DEFAULT，utf-8以及其他一些方式

对于英文而言这几种所获取的编码是没有太大区别的，而中文则大有不同，其中DEFAULT所采取的是GB2312

可以通过一下方式进行确认，程序运行后会发现bufOfGB和buf是相同的

        string str = "hello，我的祖国";
        byte[] bufOfGB = System.Text.Encoding.GetEncoding("gb2312").GetBytes(str);
        Array.ForEach(bufOfGB,m=>Console.WriteLine(m));
        Console.WriteLine(System.Text.Encoding.Default);
        byte[] buf = System.Text.Encoding.Default.GetBytes(str);
        Array.ForEach(buf,m=>Console.WriteLine(m));
        Console.WriteLine("-------------");
        byte[] bufOfASCII = System.Text.Encoding.ASCII.GetBytes(str);
        Array.ForEach(bufOfASCII,m=>Cophpnsole.WriteLine(m));
        Console.WriteLine("-------------");
        byte[] bufOfUTF = System.Text.Encoding.UTF8.GetBytes(str);
        Array.ForEach(bufOfUTF,m=>Console.WriteLine(m));
        Console.WriteLine("-------------");

byte[] byteArray ={43,45,67,88,23,1f}
string str = System.Text.Encoding.Default.GetString(byteArray);

C#字节数组向类型的转化

字节数组与图像

   #region BytesToBmp【函数】将字节数组转化为图像
    /// <summary>
    /// 【函数】将字节数组转化为图像
    /// </summary>
    /// <param name="buffer"></param>
    /// <returns></returns>
    public static Image BytesToBmp(byte[] buffer)
    {
      MemoryStream ms = new MemoryStream(buffer);
      ms.Position = 0;
      Image img = Image.FromStream(ms);
      ms.Close();
      return img;
    }
    #endregion

    #region BmpToBytes【函数】将图像转化为字节数组
    /// <summary>
    /// 【函数】将图像转化为字节数组
    /// </summary>
    /// <param name="Bit"></param>
    /// <returns></returns>
    public static byte[] BmpToBytes(Bitmap Bit)
    {
      byte[] back = null;www.devze.com
      MemoryStream ms = new MemoryStream();
      Bit.Save(ms, System.Drawing.Imaging.ImageFormat.Png);
      back = ms.GetBuffer();
      return back;
    }
    #endregion

字节数组与字符串

    #region StringToBytes【函数】将字符串转化为字节组
    /// <summary>
    /// 【函数】将字符串转化为字节组
    /// </summary>
    /// <param name="str"></param>
    /// <returns></returns>
    public static byte[] StringToBytes(string str)
    {
      byte[] data = System.Text.Encoding.Default.GetBytes(str);
    }
    #endregion

    #region BytesToString【函数】将字节数组转化为字符串
    /// <summary>
    /// 【函数】将字节数组转化为字符串
    /// </summary>
    /// <param name="data"></param>
    /// <returns></returns>
    public static string BytesToString(byte[] data)
    {
      string str = System.Text.Encoding.Default.GetString(data);
      return str;
    }
    #endregion

字节数组与整数

 #region BytesToInt【函数】byte数组转int数组 
    /// <summary> 
    /// 【函数】byte数组转int数组
    /// </summary> 
    /// <param name="src">源byte数组</param> 
    /// <param name="offset">起始位置</param> 
    /// <returns></returns> 
    public static int[] BytesToInt(byte[] src, int offset)
    {
      int[] values = new int[src.Length / 4];
      for (int i = 0; i < src.Length / 4; i++)
      {
        int value = (int)((src[offset] & 0xFF)
            | ((src[offset + 1] & 0xFF) << 8)
            | ((src[ofhttp://www.devze.comfset + 2] & 0xFF) << 16)
            | ((src[offset + 3] & 0xFF) << 24));
        values[i] = value;
        offset += 4;
      }
      return values;
    }
    #endregion

    #region IntToBytes【函数】int数组转byte数组
    /// <summary> 
    /// 【函数】int数组转byte数组 
    /// </summary> 
    /// <param name="src">源int数组</param>
    /// <param name="offset">起始位置,一般为0</param> 
    /// <returns>values</returns> 
    public static byte[] IntToByte编程s(int[] src, int offset)
    {
      byte[] values = new byte[src.Length * 4];
      for (int i = 0; i < src.Length; i++)
      {

        values[offset + 3] = (byte)((src[i] >> 24) & 0xFF);
        values[offset + 2] = (byte)((src[i] >开发者_JAVA开发> 16) & 0xFF);
        values[offset + 1] = (byte)((src[i] >> 8) & 0xFF);
        values[offset] = (byte)(src[i] & 0xFF);
        offset += 4;
      }
      return values;
    }
    #endregion

字节数组与Object

    #region ObjectToBytes【函数】将一个object对象序列化，返回一个byte[]  
    /// <summary>
    /// 【函数】将一个object对象序列化，返回一个byte[]    
    /// </summary>
    /// <param name="obj">能序列化的对象</param>    
    /// <returns></returns>
    public static byte[] ObjectToBytes(object obj)
    {
      using (MemoryStream ms = new MemoryStream())
      {
        IFormatter formatter = new BinaryFormatter();
        formatter.Serialize(ms, obj);
        return ms.GetBuffer();
      }
    }
    #endregion

   yYOZMCd #region BytesToObject【函数】将一个序列化后的byte[]数组还原 
    /// <summary>
    /// 【函数】将一个序列化后的byte[]数组还原    
    /// </summary>
    /// <param name="Bytes"></param>    
    /// <returns></returns>
    public static object BytesToObject(byte[] Bytes)
    {
      using (MemoryStream ms = new MemoryStream(Bytes))
      {
        IFormatter formatter = new BinaryFormatter();
        return formatter.Deserialize(ms);
      }
    }
    #endregion