MVC4 Bootstrap EditorTemplate for DateTime, TimeSpan and combined values (using a DateAndTime class)

DateAndTime.cs

using System;
using System.ComponentModel.DataAnnotations;
using Auction.Web.Utility;

namespace Auction.Web.Areas.Seller.Models
{
    public class DateAndTime
    {
        DateTime localDateTime;

        // bind datetime to a database field in UTC time
        public DateAndTime()
        {
        }

        public DateAndTime(DateTime datetime)
        {
            //his.localDateTime = DateTime.SpecifyKind(datetime, DateTimeKind.Utc).ToLocalAuctionTime();
            this.localDateTime = datetime;
        }

        public DateTime DateTime
        {
            get
            {
                return this.localDateTime.ToUtcTime();
            }
            set
            {
                this.localDateTime = DateTime.SpecifyKind(value, DateTimeKind.Utc).ToLocalAuctionTime();
            }
        }


        // Bind Date and Time to input fields in the views
        // [DisplayFormat(DataFormatString = "{0:dd-MM-yyyy}", ApplyFormatInEditMode = true)]
        // [DateOnly]
        public string Date 
        {
            get
            {
                return localDateTime.Date.ToString("d");
            }
            set
            {
                DateTime date = DateTime.Parse(value);
                localDateTime = date + localDateTime.TimeOfDay;
            }
        }

        // [DisplayFormat(DataFormatString = "{0:hh:mm}", ApplyFormatInEditMode = true)]
        public string Time 
        {
            get
            {
                return localDateTime.TimeOfDay.ToString("t");
            }
            set
            {
                TimeSpan time = TimeSpan.Parse(value);
                localDateTime = localDateTime.Date + time;
            }
        }

        [DisplayFormat(DataFormatString = "{0:HH:mm}", ApplyFormatInEditMode = true)]
        public DateTime DayTime
        {
            get
            {
                return Convert.ToDateTime(localDateTime.ToString());
            }
            set
            {
                localDateTime = localDateTime.Date + (value - value.Date);
            }
        }
    }
}

DateAndTime.cshtml

@model Auction.Web.Areas.Seller.Models.DateAndTime

<div class="control-group@(Html.ValidationErrorFor(m => m, " error"))">
    @Html.LabelFor(m => m, new { @class = "control-label" })
    <div class="controls">
        @Html.TextBoxFor(m => m.Date, new { @class="datepicker", data_date=Model.Date, data_date_format=System.Globalization.CultureInfo.CurrentCulture.DateTimeFormat.ShortDatePattern.Replace("M", "m") })
        @Html.TextBoxFor(m => m.Time, new { @class="timepicker", data_provider="timepicker" } )

        @Html.ValidationMessageFor(m => m.Date, null, new { @class="help-inline" })
        @Html.ValidationMessageFor(m => m.Time, null, new { @class="help-inline" })
    </div>
</div>

DateTime.cshtml

@model DateTime?

@{
    DateTime dt;
    if (Model.HasValue)
    {
        dt = (DateTime)Model;
    }
    else
    {
        dt = DateTime.Now;
    }
}
<div class="control-group@(Html.ValidationErrorFor(m => m, " error"))">
    @Html.LabelFor(m => m, new { @class = "control-label" })
    <div class="control input-append date datepicker" data-date="@dt.ToString("dd-MM-yyyy")">
        @Html.TextBox(@dt.ToString("dd-MM-yyyy"), ViewData.TemplateInfo.FormattedModelValue)
        <span class="add-on"><i class="icon-th"></i></span>
        @Html.ValidationMessageFor(m => m)
    </div>
</div>

TimeSpan.cshtml

@model TimeSpan?

@{
    TimeSpan ts;
    
    if (Model == null)
    {
        ts = TimeSpan.FromMinutes(10);
    }
    else
    {
        ts = Model.Value;
    }
     
}
<div class="control-group@(Html.ValidationErrorFor(m => m, " error"))">
    @Html.LabelFor(m => m, new { @class = "control-label" })
    <div class="controls">
        @Html.TextBoxFor(m => m, "hh\\:mm", new { @Value = ts.ToString("hh\\:mm"), @class="timepicker", data_provider="timepicker" } )
        @Html.ValidationMessageFor(m => m, null, new { @class="help-inline" })
    </div>
</div>

Really useful.