MaxLength Attribute not generating client-side validation attributes
asp.net-mvc, asp.net-mvc-3, c#, model-validation, validation
Solution
Try using the `[StringLength]` attribute:
[Required(ErrorMessage = "Name is required.")]
[StringLength(40, ErrorMessage = "Name cannot be longer than 40 characters.")]
public string Name { get; set; }
That's for validation purposes. If you want to set for example the maxlength attribute on the input you could write a custom data annotations metadata provider as shown in this post and customize the default templates.
Problem
I have a curious problem with ASP.NET MVC3 client-side validation. I have the following class: ``` public class Instrument : BaseObject { public int Id { get; set; } [Required(ErrorMessage = "Name is required.")] [MaxLength(40, ErrorMessage = "Name cannot be longer than 40 characters.")] public string Name { get; set; } } ``` From my view: ``` <div class="editor-field"> @Html.EditorFor(model => model.Name) @Html.ValidationMessageFor(model => model.Name) </div> ``` And here's the generated HTML I get for the textbox for this field: ``` <input class="text-box single-line" data-val="true" data-val-required="Name is required." id="Name" name="Name" type="text" value=""> ``` No sign of the `MaxLengthAttribute`, but everything else seems to be working. Any ideas what's going wrong?