C# 将字节流转换为图片的实例方法

usingsystem;
usingsystem.collections.generic;
usingsystem.linq;
usingsystem.text;
usingsystem.drawing;
usingsystem.io;
namespacemicrosoft.form.base
{
    classimagetobyte
    {
        /// <summary>
        /// 图片转换成字节流
        /// </summary>
        /// <param name="img">要转换的image对象</param>
        /// <returns>转换后返回的字节流</returns>
        publicstaticbyte[] imgtobyt(image img)
        {
            memorystream ms = newmemorystream();
            byte[] imagedata = null;
            img.save(ms, system.drawing.imaging.imageformat.jpeg);
            imagedata = ms.getbuffer();
            returnimagedata;            
        }
        /// <summary>
        /// 字节流转换成图片
        /// </summary>
        /// <param name="byt">要转换的字节流</param>
        /// <returns>转换得到的image对象</returns>
        publicstaticimage byttoimg(byte[] byt)
        {
            memorystream ms = newmemorystream(byt);
            image img = image.fromstream(ms);
            returnimg;
        }
        //
        /// <summary>
        /// 根据图片路径返回图片的字节流byte[]
        /// </summary>
        /// <param name="imagepath">图片路径</param>
        /// <returns>返回的字节流</returns>
        privatestaticbyte[] getimagebyte(stringimagepath)
        {
            filestream files = newfilestream(imagepath, filemode.open);
            byte[] imgbyte = newbyte[files.length];
            files.read(imgbyte, 0, imgbyte.length);
            files.close();
            returnimgbyte;
        }
    }
}