private static void TryParseParametersForFilterAndTake(string takeCommand, string takeQuantity, string coursename, string filter)
{
if (takeCommand == "take")
{
if (takeQuantity == "all")
{
StudentsRepository.FilerAndTake(coursename, filter);
}
else
{
int studentsToTake;
bool hasParsed = Int32.TryParse(takeQuantity, out studentsToTake);
if (hasParsed)
{
StudentsRepository.FilerAndTake(coursename, filter, studentsToTake);
}
else
{
OutputWriter.DisplayException(ExceptionMessages.InvalidTakeQuantityParameter);
}
}
}
else
{
OutputWriter.DisplayException(ExceptionMessages.InvalidTakeCommand);
}
}