ASP.NET MVC中更改密码的可选验证

Question

I have the following model

public AccountInfo {

    // loads of other property here as well.

    public string Password { get; set; }

    public string NewPassword { get; set; }

    [Compare("NewPassword", ErrorMessage = "New Passwords dont match.")]
    public string ConfirmNewPassword { get; set; }

}

I am using data annotations to display client side validation message.

Now I am working on the change user profile details page.

What I am required to do is, Along with the other details such as email, full name, address etc, I have to show 3 fields namely

• Current password
• New password
• Confirm New password

Now the scene is that these are optional fields and user may not fill it. But when he does, I want to make sure all the 3 fields are filled. , if not I want to show some validation error using data annotation.

Any Thoughts ?

Answer 1

There isn't any built in data annotation for this. You could create your custom attribute to do the validation, but it's not easy. As such, I would suggest you to use Jquery Validation / Javascript to handle this.

Basically you would want to override the submit event and do your own validation logic in there. You code will be similar to this:

function SubmitToServer() { 
    if ($('#Password').length == 0 || ($('#Password').length > 0 && $('#NewPassword ').length > 1 && $(formId).valid()) {
        $(formId).submit();
    }
}

Answer 2

You can use [Required] to tell the RAZOR that these are must or mandatory like that..

[Required]
public string Password { get; set; }

 [Required]
 public string NewPassword { get; set; }

 [Required]
 [Compare("NewPassword", ErrorMessage = "New Passwords dont match.")]
 public string ConfirmNewPassword { get; set; }

If you want to Provide range of value means use this one - [Range(1, 100)]

If you want to use password lenght means use this one - [StringLength(5)]