在剃刀中使用for循环填充下拉列表

Question

I know it is not the best practice to do this, but I am curious on how you would populate a dropdownlist using a for loop in razor.

I am trying to do it this way

@{
      int year = DateTime.Now.Year;

      @Html.DropDownListFor(model => model.ResolutionYear, new List<SelectListItem>
      {
          for (var i = 0; i < 10; i++)
          {
              if (year - i == year)
              {
                  new SelectListItem() { Text = (year - i).ToString(), Value = (year - i).ToString(), Selected = true };
              }
              else
              {
                  new SelectListItem() { Text = (year - i).ToString(), Value = (year - i).ToString() };
              }
          }
        })
}

It doesn't seem to like the way I am doing it as it keeps shouting at me } expected I have all all the closing brackets for each open bracket. Perhaps I am populating my DropDownList wrong? Is it even possible to populate this way or should I just do it in the controller?

Answer 1

Don't do it. Keep your Views as benign as possible. Use your View Model and Controller, that's what they're for. But for curiosity's sake, here's one way:

@{ var year = DateTime.Now.Year; }
<select>
@for (var i = year; (i > year - 10); i--)
{
    if (i == (year - 3))
    {
        <option value="@i" selected>@i</option>
    }
    else
    {
        <option value="@i">@i</option>
    }
}
</select>