从 TimeSpan EditorFor 中删除秒数

Question

I am creating a view containing a form in ASP.NET MVC3 for a model containing time spans. I was wondering if there is a way that I can prevent the text box that is rendered from showing the seconds part? So that instead of 12:30:00 , I would get 12:30 ?

Here is what I have in the model and view:

//model
[Required]
[DataType(DataType.Time)]
public TimeSpan Start { get; set; }


//view
<div class="editor-field">
        @Html.EditorFor(model => model.Start)
        @Html.ValidationMessageFor(model => model.Start)
    </div>

Any advice would be much appreciated.

Answer 1

You could use the [DisplayFormat] attribute:

[Required]
[DataType(DataType.Time)]
[DisplayFormat(ApplyFormatInEditMode = true, DataFormatString = @"{0:hh\:mm}")]
public TimeSpan Start { get; set; }

Answer 2

The answer of Darin works but the validation still not work like I would expect. I added a custom validation. That custom validation is doing a regular expression without a regular expression attribute. This is done otherwise you can't post times like 14:30 because the regular expression will stop it or the TimeSpan object will stop it because it expects a TimeSpan like 00:00:00.

So I created this validation for MVC 5 with Entity Framework 6 in Visual Studio 2013 Update 4.

public class Training : IValidatableObject
{
    private const string Time = @"^(?:[01][0-9]|2[0-3]):[0-5][0-9]:00$";

    public int Id { get; set; }

    [Display(Name = "Starttime")]
    [DataType(DataType.Time)]
    [DisplayFormat(ApplyFormatInEditMode = true, DataFormatString = @"{0:hh\:mm}")]
    public TimeSpan StartTime { get; set; }

    [Display(Name = "Endtime")]
    [DataType(DataType.Time)]
    [DisplayFormat(ApplyFormatInEditMode = true, DataFormatString = @"{0:hh\:mm}")]
    public TimeSpan EndTime { get; set; }

    public IEnumerable<ValidationResult> Validate(ValidationContext validationContext)
    {
        var results = new List<ValidationResult>();

        Regex timeRegex = new Regex(Time);

        if (!timeRegex.IsMatch(StartTime.ToString()))
        {
            results.Add(new ValidationResult("Starttime is not a valid time hh:mm", new[] { "StartTime" }));
        }

        if (!timeRegex.IsMatch(EndTime.ToString()))
        {
            results.Add(new ValidationResult("Endtime is not a valid time hh:mm", new[] { "EndTime" }));
        }

        return results;
    }
}