我QQ243571407

[url]http://bbs.bc-cn.net/viewthread.php?tid=163706&extra=&page=1[/url]

里面有详细的方法

//把  图片   ---》 字节数组
            MemoryStream mm=new MemoryStream();
            this.pictureBox1.Image.Save(mm,this.pictureBox1.Image.RawFormat);
            byte [] uu=mm.ToArray();
//图片读出来

                byte[] uu = (dr[3] as byte[]);
                MemoryStream ms=new MemoryStream(uu);
                this.pictureBox1.Image = Image.FromStream(ms);