仅允许特定的电子邮件地址

Question

I am working on an MVC project and i need to verify the email address for a particular group. For instance only the people with emailID@stanford.edu can register.I did try data annotations but it only verifies the email address, not a substring. How can i check if the email address consists of @stanford.edu ? Thank you in advance.

So, based on the suggestion i tried this one, however i get error during build that: no suitable method found to override. I tried this.

/*
 * Attribute to validate schools
 */
public class ValidateSchoolAttribute : ValidationAttribute
{
    public string stanfordEmail { get; set; }
    public string harvardEmail { get; set; }

    public override bool IsValid(String value)
    {
        if (value == null){
            return true;
        }

        char[] delimiterCharacter = { '@' };
        String text = value;

        String[] words = text.Split(delimiterCharacter);

        if( words.Equals("stanford.edu") ||words.Equals("harvard.edu")  ){
               return true;
        }
        else{
              return false;
        }

    }
}

Answer 1

You could use a [RegularExpression] attribute

[RegularExpression(@".*@(harvard|stanford)\.edu")]
[EmailAddress]
public string Email { get; set; }

Answer 2

you should make custom validation attribute.

something like this

public class OnlyStanfordEmailAttribute: ValidationAttribute

and then override IsValid function.

if you want client side validation too you can follow this tutorial