C#将照片或图片转化为byte[]存入数据库，从数据库中读照片

public static byte[] GetBytesByImage(PictureBox pb)
{
byte[] photo_byte= null;

if (!pb.Image.Equals(null))
{
using (MemoryStream ms = new MemoryStream())
{
Bitmap bmp = new Bitmap(pb.Image);
bmp.Save(ms,System.Drawing.Imaging.ImageFormat.Jpeg);
photo_byte = new byte[ms.Length];
ms.Position = 0;
ms.Read(photo_byte, 0, Convert.ToInt32(ms.Length));
bmp.Dispose();
}
}

return photo_byte;
}

public static byte[] GetBytesByImagePath(string strFile)
{
byte[] photo_byte = null;
using (FileStream fs = new FileStream(strFile, FileMode.Open, FileAccess.Read))
{
using (BinaryReader br = new BinaryReader(fs))
{
photo_byte = br.ReadBytes((int)fs.Length);
}
}

return photo_byte;
}

public static Image GetImageByBytes(byte[] bytes)
{
Image photo = null;
using (MemoryStream ms = new MemoryStream(bytes))
{
ms.Write(bytes, 0, bytes.Length);
photo = Image.FromStream(ms, true);
}

return photo;
}