How to validate optional email id field in mvc

Dear Mam

 

I have a textbox which enter the email Id and works correctly. This textbox leaves empty my validation works correctly. I want to my textbox is empty validation do not works.When I enter the value in this textbox then validate properly.

 

[Required]

[EmailAddress]

[Display(Name = "Email")]

public string Email { get; set; }

 

This code not work for optional validation.

You can either use front end validation using JQuery or you can use MVC built-in front end validation via Data Annotations. Usually both are used to ensure security at both front end and backend. Here is an example you can follow i.e. http://bit.ly/2gW3lPI

 

For backend following simple line if code can be used i.e.

 

 

Hi,

 

Refer this tutorial

 

http://www.c-sharpcorner.com/article/data-annotations-and-validation-in-mvc/