Is there some way to use the DataType annotation on a list (IEnumerable) of objects, so that when I use DisplayFor in my template it will format the date correctly?
model:
public class CallOverview
{
[DataType(DataType.Date), DisplayFormat(DataFormatString = @"{0:dddd dd MMMM yyyy}")]
public IEnumerable<DateTime> Days { get; set; }
}
view:
@foreach (var day in Model.Days)
{
<p>@Html.DisplayFor(modelItem => day)</p>
}
output:
31/07/2012 00:00:00
I think the reason you are seeing this behavior is because you are applying the DataType attribute to the enumeration, not to its individual values. Something like this should work though:
model:
public class CallOverview
{
public IEnumerable<DateTimeWrapper> Days { get; set; }
public class DateTimeWrapper
{
[DataType(DataType.Date), DisplayFormat(DataFormatString = @"{0:dddd dd MMMM yyyy}")]
public DateTime Value { get; set; }
}
}
view:
@foreach (var day in Model.Days)
{
<p>@Html.DisplayFor(m => day.Value)</p>
}
You can do what you are trying to do. You need to introduce a new Type to persist the collection via EF.
See this answer for details: https://stackoverflow.com/a/43773647/1742393
public class CallOverview
{
[DataType(DataType.Date), DisplayFormat(DataFormatString = @"{0:dddd dd MMMM yyyy}")]
public PersistableDateTimeCollection<DateTime> Days { get; set; }
}
The answer is it can't be done.
