Regular Expression Validators

[Linda224]

Hello
I have a c#.net application that I am working on putting some validation on the form.
I have 9 regular expression validators on one page and I want to know if it is possible that only one will show up at a time.
Right now if they fail two or more of the validators they all show up but I would like only one to show up and then when they correct that error the next one show up.

Is that possible?
Thank you for any help
Linda

 

[PGO01]

I think you would have to use server side code to do it - which would mean a round trip to the server each time a control is validated.

 

[jmeckley]

are you talking about webforms validation controls? if so you may want to post in forum855.

if you you want 1 regular expression to fail at a time then you will either need a rather nasty expression, or custom code. with the custom code you could load the expressions into any array and take the first failing expression.

var patterns = new[]
{
  new 
    {
       pattern = new Regex("pattern 1"),
       message = "Error Message 1"
    },
  new 
    {
       pattern = new Regex("pattern 2"),
       message = "Error Message 2"
    },
  new 
    {
       pattern = new Regex("pattern 3"),
       message = "Error Message 3"
    },
};
var failed = patterns.FirstOrDefault(x => x.pattern.IsMatch(value) == false);
if(fail != null)
{
   args.IsValid = false;
   args.ErrorMessage = failed.message;
}
else
{
   args.IsValid = true;
}

Jason Meckley
Programmer
Specialty Bakers, Inc.

faq855-7190
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