Regular Expression Validator

[wahoo02]

I'm currently using a form that uses a Regular Expression Validator for validating phone # information. After testing the validator out, I found that the validator will catch errors where 1, and 2 numbers are inputted. It won't however catch the instance where the user doesn't put anything. I know that there is a RequiredFieldValidator in ASP.NET, but doing regular expression of \d{3} should catch all errors of 0 input,1 input, or 2 input. Heres one of the validator calls, any advice on if I goofed up, or going about this the wrong way would be appreciated.

<asp:RegularExpressionValidator runat=&quot;server&quot;
id=&quot;prefix&quot; ControlToValidate=&quot;textprefix&quot;
ValidationExpression=&quot;\d{3}&quot;
Error Message =&quot;*&quot;
CausesValidation = &quot;False&quot; />

Thanks
wahoo02

 

[mbhavani]

I would like you to know one thing which I came to know recently.

All Validators except RegularExpression validator will supress any kind of validation if the data is null.

Even I had the same doubt

 

[lfc77]

You need a RequiredFieldValidator as well as your RegularExpressionValidator. You would think that it would work with just the regular expression, but that's just the way the validation controls work.


lfc77

 

[wahoo02]

Thanks for the feedback guys, I was driving myself crazy on this one. I guess i'll have to use the resort to using the RequiredFiedValidator too.