DateTimePicker C＃在Windows XP上无法正常工作

Question

I am creating a WinForms app that uses the DateTimePicker control, my dev machine is a Windows 7 machine, the control works fine, no problems or issues. But when I deploy this WinForm to an XP machine, and try to use the DateTimePicker control it opens up the calendar, but upon selection of a date the calendar does not go away as it does on my dev machine.

Please advise on how to rectify this.

Thanks in advance.

This is all I am doing when selecting a value from the DateTimePicker control:

private void dateTimePickerStartDate_ValueChanged(object sender, EventArgs e)
        {
            dateTimePickerStartDate.Format = DateTimePickerFormat.Long;
        }

        private void dateTimePickerEndDate_ValueChanged(object sender, EventArgs e)
        {
            dateTimePickerEndDate.Format = DateTimePickerFormat.Long;
        }

Answer 1

I finally solved this! For some reason XP does not seam to like this line of code:

dateTimePickerStartDate.Format = DateTimePickerFormat.Long;
dateTimePickerEndDate.Format = DateTimePickerFormat.Long;

So if you set your datetimepicker's format to long XP does not close the calendar on selection of a date.

To solve this set you datetimepicker's format to this (if you want to use the long format) :

dateTimePickerStartDate.Format = DateTimePickerFormat.Custom;    
dateTimePickerStartDate.CustomFormat = "dd MMMM yyyy";

dateTimePickerEndDate.Format = DateTimePickerFormat.Custom;    
dateTimePickerEndDate.CustomFormat = "dd MMMM yyyy";