如何实现上传图片到oracle

我当初用的Long Row类型Stream imgDataStream = u_photo.PostedFile.InputStream;
int imgDataLen = u_photo.PostedFile.ContentLength;
string imgTypeTemp = u_photo.PostedFile.ContentType;
byte[] imgDataTemp = new byte[imgDataLen];
imgDataStream.Read( imgDataTemp, 0, imgDataLen );string strSql = "INSERT INTO yh ( id, u_photo ) VALUES ( YH_ID.NextVal, ? )";
myConnection=new OleDbConnection(System.Configuration.ConfigurationSettings.AppSettings["data"]);
myConnection.Open();
myCommand = new OleDbCommand( strSql , myConnection );
myCommand.Parameters.Add( ":u_photo", OleDbType.Binary, imgDataLen, "u_photo" ).Value = imgDataTemp;
myCommand.ExecuteNonQuery();