Allow User to input HTML in ASP.NET MVC – ValidateInput or AllowHtml

by

Add the following attribute the action (post) in the controller that you want to allow HTML for:

[ValidateInput(false)]

Edit: As per Charlino comments:

In your web.config set the validation mode used. See MSDN:

<httpRuntime requestValidationMode="2.0" />

Edit Sept 2014: As per sprinter252 comments:

You should now use the [AllowHtml] attribute. See below from MSDN:

For ASP.NET MVC 3 applications, when you need to post HTML back to
your model, don’t use ValidateInput(false) to turn off Request
Validation. Simply add [AllowHtml] to your model property, like so:

public class BlogEntry {
    public int UserId {get;set;}
    [AllowHtml] 
    public string BlogText {get;set;}
 }

More Related Contents:

  1. What is ModelState.IsValid valid for in ASP.NET MVC in NerdDinner?
  2. ASP.NET MVC 3 client-side validation with parameters
  3. attribute dependent on another field
  4. How to change ‘data-val-number’ message validation in MVC while it is generated by @Html helper
  5. Validate object based on external factors (ie. data store uniqueness)
  6. Remote Validation in ASP.Net MVC 3: How to use AdditionalFields in Action Method
  7. ASP.NET MVC – Custom validation message for value types
  8. jQuery Chosen Dropdown validation client site doesn’t work
  9. Required Attribute on Generic List Property
  10. maxlength attribute of a text box from the DataAnnotations StringLength in Asp.Net MVC
  11. Disable client-side validation in MVC 3 “cancel” submit button
  12. MVC Unit test case
  13. Html.DropdownListFor selected value not being set
  14. ASP.Net MVC Html.HiddenFor with wrong value
  15. ASP.NET MVC – Should business logic exist in controllers?
  16. Redirect from asp.net web api post action
  17. Challenges with selecting values in ListBoxFor
  18. Get CultureInfo from current visitor and setting resources based on that?
  19. What is the right time for ViewData, ViewBag, Session, TempData
  20. Uploading Files into Database with ASP.NET MVC
  21. The ViewData item that has the key ‘MY KEY’ is of type ‘System.String’ but must be of type ‘IEnumerable’
  22. asp.net mvc decorate [Authorize()] with multiple enums
  23. RSS Feeds in ASP.NET MVC
  24. Merge MyDbContext with IdentityDbContext
  25. How to return Json object from MVC controller to view
  26. Html.Textbox VS Html.TextboxFor
  27. Bootstrap glyphicon not showing in Form
  28. MVC 5 Owin Facebook Auth results in Null Reference Exception
  29. Why font-awesome works on localhost but not on web ?
  30. ASP.NET MVC: RedirectToAction with parameters to POST Action

Leave a Comment