enterprise library VAB Implementation issues

Question

Hi All..

I have an issue with the implementation of VAB. We are using ASP.NET MVC 1.0

I have a property "First Name" and we want to have 2 validations.

1. Not Null Validator
2. RegEx Validator (to stop some characters)

Now if I leave it blank then it gives me the error message from both the validator. If the First name is blank I only want Not Null to show the error details If the First name is not blank then i was the RegEx to get executed and if there are any invalid characters then i want to stop them.

Please guide me here

Thanks !

Answer 1

The Not Null Validator is not going to pick it up because the string is not null - it is an empty string. Have a look at this post: http://geekswithblogs.net/michelotti/archive/2008/06/12/122836.aspx

Answer 2

When you're using Enterprise Library 5.0, you can mix VAB attributes and DataAnnotation attributes (because VAB now extends DataAnnotations). When you decorate your property as follows, your problem is solved:

[System.ComponentModel.DataAnnotations.Required]
[EnterpriseLibrary.Validation.Validators.RegexValidator("...")]
public string LastName { get; set; }