C# 将字节流转换为图片的实例方法_C#教程

复制代码 代码如下:

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;
        }
    }
}