// Добавление нового больничного
        private void AddNewSickLeave_Click(object sender, RoutedEventArgs e)
        {
            var vacationWindow = new AddNewSickLeave(_currentEmployeeId);

            vacationWindow.ShowDialog();

            LoadVacationsInfo();
        }
        // Редактирование больничного
        private void EditSickLeave_Click(object sender, RoutedEventArgs e)
        {
            int currentId      = (SickLeavesDataGrid.SelectedItem as SickLeaveData).Id;
            var vacationWindow = new AddNewSickLeave(_currentEmployeeId, currentId);

            vacationWindow.ShowDialog();

            LoadVacationsInfo();
        }