AllowHtml attribute not working

Question

I have a model with this property:

     [AllowHtml]
     [DisplayName(\"Widget for Table\")]
     [StringLength(1000, ErrorMessage = \"Maximum chars 1000\")]         


        

Answer 1

I also had this issue. I could not get a model property marked with [AllowHtml] to actually allow HTML, and instead encountered the same error you describe. My solution ended up being to mark the Controller action that accepts the posted model with the [ValidateInput(false)] attribute.