Jump to content
  • Announcements

    • boen_robot

      Guidelines and Netiquette   03/28/2017

      Posting Problems:   Having problems posting your topic? Read through this: To join, you agree to our terms and conditions and fill out and submit a registration form. An activation email will be sent to your email adress, so you'll need to verify your account. After that the account has to be validated by one of the moderators. This will mean that it can take up to a day to be activated. A couple of things to remember to ensure approval: Don't use an email address in one of those $2 four character .com domains eg. xyds.com. These will be deleted and the domain added to the banned list. Don't use an email address that is within a domain with a bad reputation for spam. A Google search is run on every email address and email domain. Don't sign up with an email address that doesn't exist, doesn't work or requires the sender to answer a quiz before their email can get to you. Put your country and or state and city in the signup form. Blank forms will go to the botton of the "to do" list. And make sure that your email address and your country match, saying you're from Alabama and using a .ru email address is not going to get you activated. After a membership is activated the first few posts will be monitored. Posting spam or unapproved topics described in the agreement results in an immediate ban. The email provider and the IP addresses associated with the account will be banned and all posts will be deleted. These strict measures have been deemed necessary to hinder spam. Sorry for any inconvenience this causes, but it's not liable to change. If, after reading this, you still can't post and don't understand why, contact one of the Moderators listed here.   Topic Guidelines   Including the following information can expedite an accurate response from board members: Must be a Specific Problem or Question related to web design and development Include Code in Question (wrap with   for small blocks of code and for longer blocks   ) Include Code Author Include Extra Notes/Modifications/Attempts Include web link to page/file when possible Content Guidelines   You may not post, upload, link to, or email any Content that contains, promotes, gives instruction about, or provides prohibited Content. Prohibited Content includes any Content that breaks any local, state, county, national or international law. Prohibited Content also includes: No direct or indirect advertising or websites, forums, products, services No hijacking of posts (do not post your question in someone elses) Content that infringes upon any rights [ex. MP3s and ROMs] (including, but not limited to, copyrights and trademarks) Abusive, threatening, defamatory, racist, or obscene Viruses or any other harmful computer software False Information or libel Spam, chain letters, or Pyramid schemes Gambling or Illicit drugs Terrorism Hacking or cheating for internet/online games Warez, Roms, CD-Keys, Cracks, Passwords, or Serial Numbers Pornography, nudity, or sexual material of any kind Excessive profanity Invasive of privacy or impersonation of any person/entity Hacking materials or information Posting Tips   There are more BBcodes than there are buttons for on the reply menu. To get the full list, click "BB Code Help" underneath the clickable smilie face menu. Use   for small snippets of code Use   for lengthy snippets of code Use   if your snippet is HTML (optional) Use   if your snippet is SQL (optional) Rules of Conduct   Be nice. There's no need for calling someone stupid if they ask an 'easy' question. Keep your avatars and signatures absolutely child friendly. We have a younger audience on this forum. Keep your language appropriate for the same reason above. Do not PM moderators for help on the forum. Post on the topic, or create a new one.   Spam:   Recently, as you have all without doubt noticed, we have had lots of spam and advertisement on the forum. Therefore, we'd like to alert you as to what to do when you have found any of the aforementioned annoying messages: it. Immediately. Give a clear reason, please, if the advertising is not evident. DO NOT POST! Report, let the post stay as is, and we will get to it, meanwhile if you continue to post as normal in the other threads, it won't be on the top so long. Refrain from PMing the member. This won't help at all, as they are most likely spambots anyway. Thank you.       Images in signatures:   After thinking of users on dial-up, we have decided to enforce the following rules regarding signatures. Please pay heed to them. Respecting these rules is respecting the members on this forum with dial-up. Signature rules: No animated images AT ALL. No matter the amount of animation. Maximum image widthxheight: 300x150 Maximum image (file) size: 15kb Use calm colors. Do not use highly contrasting images in your signature, as this can get really annoying when seeing several posts from one member in the same thread. The same prohibited content goes for images as for posts. Lastly, use common sense. No lengthy signatures please. Save us some scrolling. Thank you.       Links in signatures:   Please understand that w3schools.com only exists because of voluntary work and is barely supported by the advertising littered throughout the tutorials and the forum. So, please, stop advertising other sites. DO not post links that drive traffic away from the w3schools domain - especially to a site that offers similar if not identical information. Please help support the site by keeping individuals on it. Thank you. Here are some guidelines as to what you can put in your signature: w3schools links --> allowed w3.org links --> allowed browser links --> allowed html editor links --> allowed personal sites --> allowed tutorial sites competing with w3schools --> NOT allowed sites completely irrelevant to webprogramming and this forum --> NOT allowed   Thanks for understanding, and for taking the time to read this. ~W3Schools Modstaff~

Updating ADOR Recordset Efficiently

Recommended Posts

I am new to vbScript and working with a recordset of music file names. My program presents numbered and

sorted lists of files on the console, in panels of 55 items per page, anywhere from 60 to 17,000+ files

depending on program options chosen. The recordset is re-built when a different list is chosen,

for example, MP3-only, MIDI-only, both types, Favorites-only. The numbers added to the list are used to

identify the song file by providing the information needed to move to the DataList record to get the file name.


Here is sample code that creates the recordset:

Set DataList = CreateObject(“ADOR.Recordset”)

DataList.Fields.Append “Music File”, adVarChar, MaxCharacters


Do While Not objStream.AtEndOfStream

filename = objStream.ReadLine


DataList (“MusicFile”) = filename




The program has the option of saving a list of favorites, and they are stored in a text file of song file names: _Favorites.m3u

What I want to add is a + (plus mark) to the console list, in front of each song file that has been selected as a favorite.


So my question is: can my DataList recordset with an added favorites flag field be updated efficiently

each time the recordset is loaded, and can it be updated efficiently when favorites are removed from the favorites list.


Let’s say that the file “Zing.mp3” is one of the favorites. What is the best way to move to the record to update the flag field?

I can easily move to and update the field when adding a new favorite because I know the record position in the recordset.

When removing a favorite or re-building the DataList, updating the flag field at that time is the tricky part of this scheme.

Share this post

Link to post
Share on other sites

I guess one way would be to read all of the favorites and store those in a data structure like an array or dictionary, and then when you're building the recordset you can check if each item is in the list of favorites and set the field appropriately.

Share this post

Link to post
Share on other sites

Your suggestion to use a dictionary object to navigate a recordset works. The dictionary records the first record position of each alpha character.

So let's say I want to remove "Prelude.mp3" as a favorite. Knowing from the dictionary that "P" starts at record 733, I can move to record #733

on the recordset and begin comparing file names at that point until I either find the record and change favFlag from "+" to " ", or I've reached

letter "Q", in which case no change is necessary because Prelude.mp3 is not in the current recordset.


The point is, doing a partial search of the sorted recordset of filenames when initializing flags for display or removing flags from the display,

seems more efficient than searching the recordset from top to bottom for each item. The dictionary is also used as a tool to navigate

and display data beginning with a specific letter of the alphabet.This has been solved. Thanks for your part in the solution.

Share this post

Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now