private void OnReportReservationButtonClick(object sender, EventArgs args) { string name = nameTextBox.Text; string description = descriptionTextBox.Text; int facilityListIndex = facilityComboBox.SelectedIndex; DateTime start = fromDatePicker.Value; DateTime end = toDatePicker.Value; ReservationRequestEventArgs eventArgs = new ReservationRequestEventArgs(name, description, facilityListIndex, start, end); ReservationRequest?.Invoke(sender, eventArgs); }