Display Friendly Error Message When Html tag is entered in a text Box- MVC ASP.NET

Question

I have requirement of validating user input in a text box. Whenever a html tag is entered it should display the same view with friendly error message like \"Cannot enter htm

Answer 1

It is working now by displaying the friendly error message. I have changed a little bit by adding Validateinput tag at the Post Action controller.

I have to add this in ViewModel

[AllowHtml]
[RegularExpression (@"^[^<>]*$", ErrorMessage = "You have entered html... Html is not a valid input!" )]
public string SomePropertyThatShouldNotAcceptHtml { get; set; }

In Action Controller

I have to add the tag in the Post Event

[Validateinput(false)]

Thanks Darin.