DatePicker::DateValidationError Event

 

Occurs when Text is set to a value that cannot be interpreted as a date or when the date cannot be selected.

Namespace:   System.Windows.Controls
Assembly:  PresentationFramework (in PresentationFramework.dll)

public:
event EventHandler<DatePickerDateValidationErrorEventArgs^>^ DateValidationError {
	void add(EventHandler<DatePickerDateValidationErrorEventArgs^>^ value);
	void remove(EventHandler<DatePickerDateValidationErrorEventArgs^>^ value);
}

After the DateValidationError event occurs, if you set the DatePickerDateValidationErrorEventArgs::ThrowException property to true, one of the following exceptions is raised:

Exception type

Condition

FormatException

The text entered cannot be parsed to a valid date, and the exception is not suppressed.

ArgumentOutOfRangeException

The text entered parses to a date that is not selectable.

<DatePicker DateValidationError="eventhandler"/>

The following example creates a DatePicker that displays the dates in August 2009 and specifies that each Saturday and Sunday is not selectable.

No code example is currently available or this language may not be supported.
<DatePicker Name="datePickerWithBlackoutDates"
            DisplayDateStart="8/1/09"
            DisplayDateEnd="8/31/09"
            SelectedDate="8/10/09"
            DateValidationError="DatePicker_DateValidationError">
  <DatePicker.BlackoutDates>
    <CalendarDateRange Start="8/1/09" End="8/2/09"/>
    <CalendarDateRange Start="8/8/09" End="8/9/09"/>
    <CalendarDateRange Start="8/15/09" End="8/16/09"/>
    <CalendarDateRange Start="8/22/09" End="8/23/09"/>
    <CalendarDateRange Start="8/29/09" End="8/30/09"/>
  </DatePicker.BlackoutDates>
</DatePicker>

The DatePicker handles the DateValidationError event, as shown in the following code. If the user enters a date that is not selectable, the example displays a message. If the user enters text that is not a valid date, an exception is thrown.

No code example is currently available or this language may not be supported.

.NET Framework
Available since 4.0
Silverlight
Available since 2.0
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