access数据库中以 OLE 对象方式存储的JPEG 图片显示到picturebox控件中

[ifdone]

数据库中以ole对象存储的图片是以什么样的方式存储的?是一个键接地址还是转为二进制文件存储到相应的数据库文件中的.

[孟子E章]

stream.Write(b, 0, b.Length);
PictureBox1.Image = new Bitmap(stream) ;

stream.Close() ;

[孟子E章]

byte[] b;
b = cmd.ExecuteScalar();
if ((b.Length > 0)) {
MemoryStream stream = new MemoryStream(b, true);
stream.Write(b, 0, b.Length);
PictureBox1.Image = new Bitmap(stream) ;
stream.Close() ;
}

OLE为二进制存储

[ifdone]

[Quote=引用 2 楼 net_lover 的回复:]
byte[] b;
b = cmd.ExecuteScalar();
if ((b.Length > 0)) {
MemoryStream stream = new MemoryStream(b, true);
stream.Write(b, 0, b.Length);
PictureBox1.Image = new Bitmap(stream) ;
stream.Close() ;
}

OLE为二进制存储
[/Quote]
看看我写的代码,在最后一行提示ms参数不正确

Image image = Image.FromFile(@"C:\Documents and Settings\bowlong\My Documents\My Pictures\pig.jpg");
            MemoryStream ms = new MemoryStream();
            image.Save(ms, System.Drawing.Imaging.ImageFormat.Jpeg);
            ms.Flush();
            ms.Seek(0, SeekOrigin.Begin);
            byte[] buffer = new byte[ms.Length];
            ms.Write(buffer, 0, (int)ms.Length);//
            pictureBox1.Image = Image.FromStream(ms);

[ifdone]

思路混乱,上面代码写的不对.

[ifdone]

OleDbConnection Conn = new OleDbConnection(@"Provider=MicroSoft.Jet.OLEDB.4.0;
                                          Data Source=E:\bearing capacity access\lianxi\photo\pho.mdb");
                                OleDbCommand oleDbCommand1 = new OleDbCommand("SELECT img FROM tab1 where id = 1", Conn);
                OleDbDataAdapter da = new OleDbDataAdapter();
                da.SelectCommand = oleDbCommand1;
                DataSet dataset1 = new DataSet();
                da.Fill(dataset1, "tab1");
                byte[] buffer = dataset1.Tables[0].Rows[0][0] as byte[];
                MemoryStream ms = new MemoryStream();
                ms.Write(buffer, 78, buffer.Length - 78);
                
                pictureBox1.Image = Image.FromStream(ms);提示ms参数不对

我建的数据库文件名为pho.mdb,其中只有一个表tab1,有个自动编号字段名为id,一个img字段存储ole对象,我怎么操作img字段下存储的哦了对象读到byte类型的数组中?