//讀取DataSet中以二進制(Image)形式保存的圖片
byte[] byteImage = (byte[])dataSet11.tBGPicture.Rows[2]["PicContent"];
//轉成MemoryStream類型
System.IO.MemoryStream stream = new System.IO.MemoryStream(byteImage, true);
//stream.Write(byteImage, 0, byteImage.Length);
//顯示圖片
pictureBox1.Image = Image.FromStream(stream);
//關閉stream
stream.Close();