ASP.NET 4 日历控件不显示 SelectedDate

Question

I have an ASP.NET 4 calendar display problem. I want to programmatically set the calendar. So, I put this code in the void Page_Load(object sender, EventArgs e) function:

Calendar1.SelectedDate = DateTime.Parse("2011-07-25");

it works fine. But, it displays the current month of the calendar (August) instead of the date I selected (July). I have to select back one month to see the date that I programmatically assigned.

What should i do?

Thanks!

Answer 1

您需要将VisibleDate属性设置为您希望它显示的月份 =)

Answer 2

There is a gotcha that you should be aware of.

If you set the selected date to DateTime.Now or something based on it such as DateTime.Now.AddYears(1) then the selected date will not be highlighted in the calendar even though it is selected.

You need to remove the time component using DateTime.Now.Date so that the calendar can do the comparison correctly when rendering. It took me a bit of debugging in the DayRenderEventHandler to figure that out.

I hope that somebody finds it useful.