format datetime to shortdatestring in view

In my model, i have;

public class ReportDetails 
{
    public DateTime? MailSent { get; set; }
    public DateTime? DateCompleted { get; set; }
}

In my controller;

var query = (from u in SessionHandler.CurrentContext.LennoxSurveyResponses
                             join c in SessionHandler.CurrentContext.MailingListEntries on u.SurveyCode equals c.SurveyCode
                             join cl in SessionHandler.CurrentContext.MailingLists on c.MailingListId equals cl.MailingListId
                             join ch in SessionHandler.CurrentContext.Channels on cl.ChannelId equals ch.ChannelId
                             join cg in SessionHandler.CurrentContext.ChannelGroups on ch.ChannelGroupId equals cg.ChannelGroupId
                             where ch.OrganizationId == 8
                             && ch.ChannelId == model.ChannelId
                             select new ReportDetails
                             {
                                 MailSent = c.LetterDate,
                                 DateCompleted = c.EmailDate
                             });
            model.Report = query.ToList();

Now in my view, I have

@foreach (var tr开发者_Go百科 in Model.Report)
                {
                    <tr>
                        <td>@tr.MailSent
                        </td>
                        <td>@tr.DateCompleted
                        </td>
                    </tr>

When the results are displayed, the MailSent and DateCompleted have both date and time. I am trying to just display the Date without the Time. If I try @tr.MailSent.HasValue ? @tr.MailSent.Value.ToShortDateString() : @tr.MailSent; then i get an error - Value cannot be null. How would i display just the date part. Both MailSent and DateCompleted are nullable fields. Thanks in advance.

You have two options:

an extension method:

public static MvcHtmlString ShortDate(this DateTime? dateTime)
{
    if (dateTime.hasValue)
        return MvcHtmlString.Create(dateTime.ToShortDateString());
    else
        return MvcHtmlString.Create("Your other option");
}

View usage:
<td>@tr.MailSent.ShortDate()</td>

or inline:

@(tr.MailSent.HasValue ? @tr.MailSent.Value.ToShortDateString() : DateTime.Now.ToString())

or a default value

@tr.MailSent.GetValueOrDefault().ToShortDateString()

Do this in code rather than the view:

select new ReportDetails
{
    MailSent = c.LetterDate.HasValue ? c.LetterDate.Value.ToShortDateString() : "",
    DateCompleted = c.EmailDate.HasValue ? c.EmailDate.Value.ToShortDateString() : "",
}

Then you don't have to worry about blowing up Razor

<tr>
    <td>@tr.MailSent</td>
    <td>@tr.DateCompleted</td>
</tr>