public static bool TryParse(string courseCodeString, out CourseCode courseCode)
{
courseCode = null;
if (string.IsNullOrWhiteSpace(courseCodeString) || courseCodeString.Length != 8)
{
return(false);
}
string subjectString = courseCodeString.Substring(0, 4);
ESubject subject;
if (!Enum.TryParse(subjectString, out subject))
{
return(false);
}
string numberString = courseCodeString.Substring(4);
ushort number;
if (!ushort.TryParse(numberString, out number))
{
return(false);
}
courseCode = new CourseCode(subject, number);
return(true);
}
static void Main(string[] args)
{
CourseCode courseCode1 = new CourseCode(ESubject.COMP, 3200);
Console.WriteLine($"{courseCode1.Subject} {courseCode1.Number}");
CourseCode courseCode2 = CourseCode.Parse("MATH1100");
Console.WriteLine($"{courseCode2.Subject} {courseCode2.Number}");
CourseCode courseCode3;
bool bParsed = CourseCode.TryParse("What is this madness!", out courseCode3);
Console.WriteLine($"Parsed: {bParsed}");
CourseCode courseCode4;
bParsed = CourseCode.TryParse("MATH1100", out courseCode4);
Console.WriteLine($"Parsed: {bParsed}");
Console.WriteLine($"{courseCode4.Subject} {courseCode4.Number}");
}