/// <summary>
/// Image转二进制
/// </summary>
/// <param name="img">图片</param>
/// <returns>转换得到的二进制</returns>
public byte[] GetByteByImage(System.Drawing.Image img)
{
try
{
byte[] bt = null;
if (!img.Equals(null))
{
using (MemoryStream mostream = new MemoryStream())
{
Bitmap bmp = new Bitmap(img);
bmp.Save(mostream, System.Drawing.Imaging.ImageFormat.Bmp);//将图像以指定的格式存入缓存内存流
bt = new byte[mostream.Length];
mostream.Position = 0;//设置留的初始位置
mostream.Read(bt, 0, Convert.ToInt32(bt.Length));
}
}
return bt;
}
catch
{
return null;
}
}
/// <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>
public static Image BytToImg(byte[] byt)
{
MemoryStream ms = new MemoryStream(byt);
Image img = Image.FromStream(ms);
return img;
}