Question

I have a basic MVC view model with annotations, for example:

    [Required(ErrorMessage="Your Name Required")]
    [Display(Name = "Your Name")]
    [DataType(DataType.Text)]
    [MaxLength(120, ErrorMessage = "Must be under 120 characters")]                
    public String  YourName { get; set; }

I have a strongly-typed view based upon this view model. When I run the application locally, the following code generates “Your Name” label:

@Html.LabelFor(model => model.YourName)

When the application is deployed on IIS7 with .NET 4 application pool, the label says “YourName” (without a space).

This is very bizzare and I didn’t come across this before. Does anybody have an idea what might be causing this?

Cache is cleared, this has been tested from a range of web clients and result is the same.

Edit:

@model MVC.Web.Models.ContactUsModel

<div>
    @Html.LabelFor(model => model.YourName)
    @Html.EditorFor(model => model.YourName)       
</div>

Edit 2
All annotations on that field are being ignored. There are other text type fields and they have the same issue. This is happening only on a live server. Live server is IIS 7 which has been configured over Plesk 10.2. Wondering whether this is a bug since I’m using MVC 3 RTM.

Edit 3
Within the same view model I have the Email property:

    [Required(ErrorMessage = "Your Email Is Required")]
    [Display(Name = "Your Email")]
    [RegularExpression(@"^\w+([-+.']\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*$", ErrorMessage = "Your Email Is Invalid")]
    [DataType(DataType.Text)]
    public String FromEmail { get; set; }

This property is used within a view:

    <div>
        @Html.LabelFor(model => model.FromEmail)    
        @Html.EditorFor(model => model.FromEmail)        
    </div>

But it works perfectly fine 🙁 So the email property works fine in both live and dev environment. Other properties work only in dev environment.

Edit 4
Removing MaxLength and MinLength annotations fixed the problem. I would still like to use MaxLength and MinLength annotations as part of my model validation routines though.

[MinLength(3, ErrorMessage = "Minimum 3 Characters")]
[MaxLength(30, ErrorMessage = "Maximum 30 Characters")]

Answer 1

MVC3 supports the [StringLength] attribute, while [MinLenght] and [MaxLength] come with Entity Framework.
Could you try this instead of MaxLength?

[StringLength(120, ErrorMessage = "Must be under 120 characters")]