How to format the dates that appear in Html.DropDownListFor?

问题

I have an object:

class Milk {
    public DateTime ExpirationDate {get;set;}
    ...
}

In a collection in a model:

class GroceryModel {
    public IList<Milk> Milks {get;set;}
    public Milk SelectedMilk {get;set;}
}

And I'm populating a dropdown list using Razor:

@Html.DropDownListFor(m => m.ExpirationDate, Model.Milks, ...);

How can I format the dates that appear in that dropdown list?

回答1:

in your controller:

model.SelectMilk will hold a list of SelectListItems

        model.SelectMilk =
            Milks.Select(
                item =>
                new SelectListItem
                    {
                        Selected = false, 
                        Value = item.ExpirationDate , 
                        Text = datetime.ToShortDateString() //or whatever format you need
                    }).ToList();

回答2:

You could try annotating the property with:

[DisplayFormat(DataFormatString = "{0:MM/dd/yyyy}", ApplyFormatInEditMode = true)]

来源：https://stackoverflow.com/questions/14606458/how-to-format-the-dates-that-appear-in-html-dropdownlistfor