Problem with RequiredFieldValidator

 

If txtEmail.Trim() = String.Empty Then

Response.Write("<script>alert('Please enter an email address');</script.")

Exit Sub

End If

 

but if it's an email address don't you want to use a regular expressions validator to check its a valid email AND is not null?

 

I finally solved my problem. I am just curious. Which do you prefer to use for input validation in ASP.Net: JavaScript or RequiredFieldValidator? I really like the way Required Expressions Validator works with email addresses. I wish that there was a way to force an user to re-enter the email address if it didn't exist. I have had several people who entered wrong email addresses in one of my forms before. It was really frustrating because I had to call them to find out the correct email address.

 

Here's the code that I put under Page Load:

 

If Page.IsPostBack = True Then

 

  'Check that all of the validation controls 
 'on this page indicate valid input
If Page.IsValid Then

'Add the data as a new record in the database 
Call AddValuesToDatabase()
      
Call AddValuesToEmail()

'Display the results "page" 
Call DisplayResults()

End If

End If