ASP MVC Validate time

I am trying to create a custom data annotations time validator to validate a datetime time field. I would like it to validate on the client. I found an example to follow on this site but I think part of it is missing. I do believe that the class I created is partially working because it seems to be validating newly created entries but does not validate when in Edit. Also I am using a timepicker with jquery-ui-timepicker-addon.js.

I also have added this to my web.config 
 <add key="ClientValidationEnabled" value="true" />
<add key="UnobtrusiveJavaScriptEnabled" value="true" />

And I have added jquery.validate.unobtrusive.js" to the timepicker bundle I created. Below you will find bits of my model, the TimeAttribute class I created and my Edit cshtml.
Any help is much appreciated

    [DisplayName("Injury Time")]
    [DataType(DataType.Time)]
    [Time]
    [DisplayFormat(DataFormatString = "{0:hh:mm tt}", ApplyFormatInEditMode = true)]
    public Nullable<System.DateTime> InjuryTime { get; set; }

` public class TimeAttribute : ValidationAttribute, IClientValidatable { public IEnumerable GetClientValidationRules(ModelMetadata metadata, ControllerContext context) { yield return new ModelClientValidationRule { ErrorMessage = ErrorMessage, ValidationType = "time" }; }

public override bool IsValid(object value)
{
    DateTime time;
    if (value == null || !DateTime.TryParse(value.ToString(), out time))
        return false;

    return true;
}

} `
@Html.LabelFor(model => model.InjuryTime, new { @class = "control-label col-md-2" }) @Html.EditorFor(model => model.InjuryTime) @Html.ValidationMessageFor(model => model.InjuryTime)

---

Keep it simple. Use [Remote] validation attribute instead that you has created.

There's a example:

Model:

[DisplayName("Injury Time")]
[DataType(DataType.Time)]
[Remote("CheckTime", "Home", ErrorMessage = "Please check this field")]
[DisplayFormat(DataFormatString = "{0:hh:mm tt}", ApplyFormatInEditMode = true)]
public Nullable<System.DateTime> InjuryTime { get; set; }

Where Home is your controller.

Controller:

public ActionResult CheckTime(Nullable<System.DateTime> InjuryTime)
        {
            if (InjuryTime == something)
            {
        // This show the error message of validation
                return Json(true, JsonRequestBehavior.AllowGet);
            }
            else
            {
        // This will ignore the validation
               return Json(false, JsonRequestBehavior.AllowGet);
            }
        }

As simple like that. No modifications must to be done on the view. Feel free to ask.

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