Question

Is it possible to use DataAnnotations to restrict user from enter special character?

I want the user to enter only A-Z, a-z and 0-9 into a textbox.

I need to do this on the client side.

Answer 1

yes you can use Regular Expression for that…

[Required(ErrorMessage = "Enter Foo !")]
[RegularExpression(@"^[a-zA-Z0-9]+$", ErrorMessage = "Incorrect Entry dude !")]
public string Foo { get; set; }