date, email and number or character validation

[ntgcmlfu]

hi,

i am finding a way to validate date, email, number and character. actually, just simple one such as in a text area, all character typed in must be number or character or at least must contain a letter (such as @ ).

can someone suggest me a way to write please???

[Rob]

Could you be a little more specific as to what you are trying to do here? I did not understand your request.

[ntgcmlfu]

oh, actually, it's just to check if the user enters the information in the right way or not.

for example, if they enter email address, then it must have @ symbol in the text field, or if they enter a date, it must be in the UK format.

really no idea how to do it.

[Rob]

The best way to do this would be to employ the use of 'regular expressions' as they can perform simple checking on data, through to very complex checks for things like credit card numbers and social security numbers.

You would need a different regular expression for each check.

Do a search on google for [google]Regular expressions in ASP[/google] and that should steer you toward your next step. Post back with your code if you get stuck once you have coded the reg exp's in.

[ntgcmlfu]

hi,

thanks alot for the advice, all the RegExp works perfectly for finding any symbol in the username enter.

[danjam]

Hi there

If you'd like to perform more advanced email validation, you can validate the domain and email account too.

See this article for details (C#, ASP .NET 2.0):
http://www.webonweboff.com/tips/asp/email.aspx

Hope this helps...