Chat_CommonClass

using System;
using System.Runtime.InteropServices;
using System.Text;
using System.Windows.Forms;
using System.IO;
using System.Runtime.Serialization.Formatters.Binary;

namespace JToolDemo.Tool_Chat
{
    public static class Chat_CommonClass
    {
        #region 数据转换
        /// <summary>
        /// struct转换为byte[]
        /// </summary>
        /// <param name="structObj"></param>
        /// <returns></returns>
        public static byte[] StructToBytes(object structObj)
        {
            int size = Marshal.SizeOf(structObj);
            IntPtr buffer = Marshal.AllocHGlobal(size);
            try
            {
                Marshal.StructureToPtr(structObj, buffer, false);
                byte[] bytes = new byte[size];
                Marshal.Copy(buffer, bytes, 0, size);
                return bytes;
            }
            finally
            {
                Marshal.FreeHGlobal(buffer);
            }
        }

        /// <summary>
        /// byte[]转换为struct
        /// </summary>
        /// <param name="bytes"></param>
        /// <param name="strcutType"></param>
        /// <returns></returns>
        public static object BytesToStruct(byte[] bytes, Type strcutType)
        {
            int size = Marshal.SizeOf(strcutType);
            IntPtr buffer = Marshal.AllocHGlobal(size);
            try
            {
                Marshal.Copy(bytes, 0, buffer, size);
                return Marshal.PtrToStructure(buffer, strcutType);
            }
            finally
            {
                Marshal.FreeHGlobal(buffer);
            }
        }
        #endregion

        #region 方案二
        //2、序列化 
        public static byte[] ObjectToByteA(object obj)
        {
            MemoryStream fs = new MemoryStream();
            byte[] tmp = null;
            try
            {
                // 序列化 
                BinaryFormatter formatter = new BinaryFormatter();
                formatter.Serialize(fs, obj);
                tmp = fs.ToArray();
            }
            catch (Exception e)
            {
                //MessageBox.Show(e.ToString(), "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
            finally
            {
                fs.Close();
            }
            return tmp;
        }
        //3、反序列化 
        public static object ByteAToObject(byte[] ba)
        {
            MemoryStream fs = new MemoryStream();
            object obj = null;
            try
            {
                // 反序列化 
                fs = new MemoryStream(ba);
                fs.Position = 0;
                BinaryFormatter formatter = new BinaryFormatter();
                obj = formatter.Deserialize(fs);
            }
            catch (Exception e)
            {
                MessageBox.Show(e.ToString(), "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
            finally
            {
                fs.Close();
            }
            return obj;
        }
        #endregion
    }
}