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string strConn = string.Format("Provider=Microsoft.Jet.OLEDB.4.0;Data Source = {0}", Application.StartupPath + "\\a.mdb");
MemoryStream stream = new MemoryStream();
            byte[] photo = null;
            Image img =  this.pictureBox1.Image;
            img.Save(stream, System.Drawing.Imaging.ImageFormat.Bmp);
            photo = stream.ToArray();
            stream.Close();
            string sql = "Insert into Tb(ID,Photo) Values ('1',@img)";
            OleDbConnection conn = new OleDbConnection(strConn );
            conn.Open();
            OleDbCommand comm = new OleDbCommand(sql, conn);
            comm.Parameters.Add("@img", OleDbType.VarBinary, photo.Length).Value = photo;
            comm.ExecuteNonQuery();
            conn.Close();


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