Image on access to local disk error

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C#

errors

Hi, I'm working on simple code, the idea is to take a picture from an Access database.

I reused a code but having now this error:
ReadTimeout' threw an exception of type 'System.InvalidOperationException'.- when doing the

 Bitmap bmp = new Bitmap(ms,false);

Can anyone help me?
In the access database the type is OLE Object.

Thanks in advance

Just to be clear, the error is in Bitmap bmp = new Bitmap(ms,false);

What I have tried:

<pre>  try
            {
            cn.Open();
            cmd = new OleDbCommand("select * from [EQUIVALENCE TABLE]", cn);
            da = new OleDbDataAdapter(cmd);
            da.Fill(dt);
            if (dt.Rows.Count > 0)
            {
                foreach (DataRow dr in dt.Rows)
                {
                    if (dr["Img"] != DBNull.Value)
                    {
                        img = ByteArrToImg((Byte[])dr["Img"]);                        
                        Bitmap bitmap = new Bitmap(img);                        
                        Graphics graphics = Graphics.FromImage(bitmap);                        
                        graphics.SmoothingMode = SmoothingMode.AntiAlias;
                        graphics.Flush();
                        bitmap.Save(path + "\\" + dr["file"].ToString() + ".jpg");
                        graphics.Dispose();
                        img.Dispose();
                        lblfile.Text = dr["file"].ToString();
                    }
                }
            }
            cn.Close();
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
                EventLog EL = new EventLog("ABS");
                EL.Source = "ABS";
                EL.WriteEntry(ex.ToString());
            }

Bitmap ByteArrToImg(byte[] b)
       {
           try
           {
               MemoryStream ms = new MemoryStream();
               ms.Position = 0;
               byte[] imgData = b;
               ms.Write(imgData, 0, Convert.ToInt32(imgData.Length));
               Bitmap bmp = new Bitmap(ms,false);
               ms.Dispose();
               return bmp;
           }
           catch(Exception er)
           {
               MessageBox.Show(er.Message);
               return null;
           }
       }