MaxLength Attribute not generating client-side validation attributes

user_251200 0
Viewed 130168

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?

model-validation asp.net-mvc-3 validation asp.net-mvc c#
11 Answers

I tried this for all the inputs in my html document(textarea,inputs,etc) that had the data-val-length-max property and it works correctly.

$(document).ready(function () {
    $(":input[data-val-length-max]").each(function (index, element) {
        var length = parseInt($(this).attr("data-val-length-max"));
        $(this).prop("maxlength", length);
    });
});
user_87220850 
<input class="text-box single-line" data-val="true" data-val-required="Name is required." 
    id="Name1" name="Name" type="text" value="">

$('#Name1').keypress(function () {
    if (this.value.length >= 5) return false;
});
user_76824790
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