ASP Help

I am a newbie to ASP and I am writing an ASP script, with the help of the tutorials on this website (thanks borg). I would like to be able to make some fields mandatory, so that if someone presses submit, then it will not allow them to continue if they dont enter any info. At the moment if you press submit, it will enter blank entries into the database, and I do not want this to happen.

This is the code that writes into the db, what do I need to add to make the fields mandatory.

rsAddAssets.AddNew
'Add a new record to the recordset
rsAddAssets.Fields("FullName") = Request.Form("FullName")
rsAddAssets.Fields("MachineMake") = Request.Form("MachineMake")
rsAddAssets.Fields("MachineType") = Request.Form("MachineType")
rsAddAssets.Fields("SerialNum") = Request.Form("SerialNum")
rsAddAssets.Fields("AssetNum") = Request.Form("AssetNum")
rsAddAssets.Fields("Location") = Request.Form("location")
rsAddAssets.Fields("Notes") = Request.Form("Notes")

'Write the updated recordset to the database
rsAddAssets.Update

Any ideas will be appreciated

I have made the fields mandatory, but when I dothat is errors out because the script will try and put a blank value into the DB.

You could also build your code so that your form (I take it you're using a form to enter the data) will not send anything to the database unless all fields have something in them.

I know HOW to do it in theory, but how do I CODE this.

Here are some validation resources for you:

Server-Side Form Validation by Dianna Leech - 12/1/1999
http://www.4guysfromrolla.com/webtech/120199-1.shtml

An Email Validation Routine by João Vieira - 4/11/1999
http://www.4guysfromrolla.com/webtech/041199-1.shtml
Somewhat shorter.

An Email Validation Script by Ben Durbin - 5/19/1999
http://www.4guysfromrolla.com/webtech/051999-1.shtml
Longer.

Form Handler: Some light form validation and error notification.
http://www.asp101.com/samples/form_handler.asp

Javascript Field Validations -- Client Side Scripting by Nannette Thacker - 8/19/1999
http://www.shiningstar.net/articles/articles/javascript/java scriptvalidations.asp?ID=AW

Form Validation Using Javascript - 9/19/1998
http://www.4guysfromrolla.com/webtech/091998-1.shtml
Good tips such as saving JavaScript functions in a file called DataValidation.js and including this in pages that need this.
JavaScript functions.

WebDaily: Your daily source for Web Technology Tips and Tricks! - 10/27/1998
http://www.4guysfromrolla.com/webtech/102798-1.shtml
Just checks if fields filled in.

Form Validation Scripts
http://www.coolnerds.com/jscript/formval.htm