End date should be greater that start date

[Anonymous]

Hi All,
I am choosing date(Start date and end date ) from datepicker and time(minute and second) from another two combobox. Now, I want add a functionality where user can select date after the start date only ? How can I achieve that?  
Any help is appreciated.

[mdevaney · Accepted solution]

@Anonymous 
You can disable the 'Submit' button for your form when the end date is not greater than the start date.  Put this code in the DisplayMode property of your Submit button.  There is no way to restrict dates on the DatePicker control directly. 

If(
     (DatePicker_StartDate.SelectedDate
     + Time(Dropdown_StartHour.Selected.Value, Dropdown_StartMinute.Selected.Value, 0)) <
     (DatePicker_EndDate.SelectedDate
     + Time(Dropdown_EndHour.Selected.Value, Dropdown_EndMinute.Selected.Value, 0)),
     DisplayMode.Edit,
     DisplayMode.Disabled
)

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