The FormatQuery event occurs when the DateTimePicker needs to determine the dimensions of the string that would be displayed for a given value.
[Visual Basic] Overridable Protected Sub OnFormatQuery( _ ByVal dtfqevent As DateTimeFormatQueryEventArgs _ ) [C#] protected virtual void OnFormatQuery( DateTimeFormatQueryEventArgs dtfqevent ); [C++] protected: virtual void OnFormatQuery( DateTimeFormatQueryEventArgs* dtfqevent ); [JScript] protected function OnFormatQuery( dtfqevent : DateTimeFormatQueryEventArgs );
DateTimePicker Class | DateTimePicker Members | System.WinForms Namespace | AddOnFormatQuery | RemoveOnFormatQuery | cor.comctl.DateTimeFormatQueryEventArgs