Current month in DropDownListFor by default in Asp.Net mvc

Question

I have Months' DropDownListFor and I want to select current month as default I tried this two options

@{
var currentMonth = month.FirstOrDefault(x => x.Id == DateTime.Now.Month).Id;
}

1.

@Html.DropDownListFor(x => x.monthId, new SelectList(month, "Id", "Name", currentMonth  ))

2.

 @Html.DropDownListFor(x => x.monthId, month.Select(x => new SelectListItem
 { Text = x.Name.ToString(), Value = x.Id.ToString(), Selected = (x.Id == currentMonth ?true:false)})),

but neither works. How can I achieve my goal?

Why has this quite basic question been upvoted three times ? — RickL, Mar 22 '18 at 13:51
Show us your model ? At least the controller action that use the view — CodeNotFound, Mar 22 '18 at 13:53
What is `month`, did you debug your code that the `currentMonth` variable is not null? — penleychan, Mar 22 '18 at 13:53

score 1 · Answer 1 · answered Mar 22 '18 at 14:14

You code is correct and Selected = (x.Id == currentMonth ?true:false)} is useless because you're binding to the property monthId of your model and this property is probably null. So at the top of your view add the following code after setting the currentMonth like below:

@{ 
    var currentMonth = month.FirstOrDefault(x => x.Id == DateTime.Now.Month).Id;
    Model.monthId = Model.monthId ?? currentMonth;
}

Sunil Shrestha · Accepted Answer · 2018-03-22T16:00:01.640

If you want with an option label then use

@Html.DropDownListFor(x => x.MonthId, new SelectList(month, "Id", "Name", Model.MonthId), "Select Month")

otherwise

@Html.DropDownListFor(x => x.MonthId, new SelectList(month, "Id", "Name", Model.MonthId))

if that's also not work then try to assign month id in your model property

Model.MonthId = month.FirstOrDefault(x => x.Id == DateTime.Now.Month).Id;

and follow the above steps.

Current month in DropDownListFor by default in Asp.Net mvc

2 Answers2