//method to add marks of student subject wise for the schoool whwn user enters 2.
public bool AddStudentMarks(School schoolObject, string StudentRollNumberString)
{
float subjectCount = 6.0f;
//create progress card object.
ProgressCard progressCardObject = new ProgressCard();
if (ValidateRollNumber(schoolObject, StudentRollNumberString))
{
//Add All subjects marks.
progressCardObject.TeluguMarks = AddSubjectMarks("Telugu");
progressCardObject.HindiMarks = AddSubjectMarks("Hindi");
progressCardObject.EnglishMarks = AddSubjectMarks("English");
progressCardObject.MathsMarks = AddSubjectMarks("Maths");
progressCardObject.ScienceMarks = AddSubjectMarks("Science");
progressCardObject.SocialMarks = AddSubjectMarks("Social");
//assign TotalMarks to the progressCard
progressCardObject.TotalMarks = (progressCardObject.TeluguMarks + progressCardObject.HindiMarks + progressCardObject.EnglishMarks
+ progressCardObject.MathsMarks + progressCardObject.ScienceMarks + progressCardObject.SocialMarks);
//assign percentage to the progressCard.
progressCardObject.Percentage = (float)progressCardObject.TotalMarks / subjectCount;
//assign the progressCardObject to the School's Student property.
schoolObject.Student.ForEach(roll =>
{
if (String.Equals(roll.StudentRollNumberString, StudentRollNumberString))
{
roll.ProgressCard = progressCardObject;
}
});
return(true);
}
return(false);
}
static void Main(string[] args)
{
School schoolObject = new School();
void onStart()
{
Console.WriteLine("Enter School Name :");
schoolObject.SchoolName = Console.ReadLine();
// School name validation code.
try
{
if (String.IsNullOrEmpty(schoolObject.SchoolName))
{
throw new emptyFieldException();
}
else if (schoolObject.SchoolName.Any(char.IsDigit))
{
throw new schoolNameCheckException();
}
else if (schoolObject.SchoolName.Length < 4)
{
Console.WriteLine("School name can't have less than 4 characters.");
//goto onStart method.
onStart();
}
}
catch (emptyFieldException msg)
{
Console.WriteLine(msg.Message);
//goto onStart method.
onStart();
}
catch (schoolNameCheckException msg)
{
Console.WriteLine(msg.Message);
//goto onStart method.
onStart();
}
}
//trigger start function.
onStart();
// School name along with the menu will be displayed when below code will run.
void menu()
{
Console.WriteLine($"\nWelcome to {schoolObject.SchoolName} Student information management\n");
Console.WriteLine("1. Add Student.");
Console.WriteLine("2. Add marks for student.");
Console.WriteLine("3. Show student's progress card.\n");
Console.WriteLine("Please provide valid input from menu options :");
string optionString = Console.ReadLine();
//Regex to check if a string contains digit or not.
Regex r = new Regex("^[0-9]+$");
try
{
if (String.IsNullOrEmpty(optionString))
{
throw new emptyFieldException();
}
if (!r.IsMatch(optionString))
{
Console.Clear();
Console.WriteLine("Invalid option type");
//goto menu method.
menu();
}
}
catch (emptyFieldException msg)
{
Console.Clear();
Console.WriteLine(msg.Message);
//goto menu method.
menu();
}
int option = Convert.ToInt32(optionString);
try
{
if (option != 1 && option != 2 && option != 3)
{
throw new optionCheckException();
}
}
catch (optionCheckException msg)
{
Console.Clear();
Console.WriteLine(msg.Message);
//goto menu method.
menu();
}
// If option 1 is selected from the menu following code fill run.
if (option == 1)
{
Student studentObj = new Student();
ADD_STUDENT_ROLL:
try
{
Console.WriteLine("Enter Student's Roll Number ");
studentObj.StudentRollNumberString = Console.ReadLine();
// check roll number field is empty or not.
if (String.IsNullOrEmpty(studentObj.StudentRollNumberString))
{
throw new emptyFieldException();
}
// check roll number field contains only numbers.
else if (!r.IsMatch(studentObj.StudentRollNumberString))
{
throw new rollNumberCheckException();
}
studentObj.StudentRollNumber = Convert.ToInt32(studentObj.StudentRollNumberString);
}
catch (emptyFieldException msg)
{
Console.Clear();
Console.WriteLine(msg.Message);
goto ADD_STUDENT_ROLL;
}
catch (rollNumberCheckException msg)
{
Console.Clear();
Console.WriteLine(msg.Message);
goto ADD_STUDENT_ROLL;
}
ADD_STUDENT_NAME:
try
{
Console.WriteLine("Enter Student's Name");
studentObj.StudentName = Console.ReadLine();
//declare a regex for alphabetic pattern.
Regex ra = new Regex("^[a-zA-Z ]+$");
// check Student Name field is empty or not.
if (String.IsNullOrEmpty(studentObj.StudentName))
{
new emptyFieldException();
}
// check Student Name field has only alphabets or not.
else if (!ra.IsMatch(studentObj.StudentName))
{
throw new studentNameCheckException();
}
else if (studentObj.StudentName.Length < 4)
{
Console.WriteLine("Student's name should have atleast 4 characters .");
goto ADD_STUDENT_NAME;
}
}
catch (emptyFieldException msg)
{
Console.Clear();
Console.WriteLine(msg.Message);
goto ADD_STUDENT_NAME;
}
catch (studentNameCheckException msg)
{
Console.Clear();
Console.WriteLine(msg.Message);
goto ADD_STUDENT_NAME;
}
schoolObject.Student.Add(studentObj);
//goto menu method.
menu();
}
// If option 2 is selected from the menu following code fill run.
else if (option == 2)
{
string rollNumber; //making a rollNumber variable to perform operation for that student.
void validateRollNumber()
{ //function to verify roll number .
Console.WriteLine("Enter Student's roll number :");
rollNumber = Console.ReadLine();
bool Flag = false;
schoolObject.Student.ForEach(roll =>
{
try
{
// declare a regex for digit pattern.
Regex r = new Regex("^[0-9]+$");
//if roll number entered matches with the stored roll number then flag is set to true and returned.
if ((roll.StudentRollNumberString == rollNumber))
{
Flag = true;
return;
}
else if (String.IsNullOrEmpty(rollNumber))
{
throw new emptyFieldException();
}
//check if roll number matches the regex pattern
else if (!r.IsMatch(rollNumber))
{
throw new rollNumberCheckException();
}
}
catch (emptyFieldException msg)
{
Console.WriteLine(msg.Message);
validateRollNumber();
}
catch (rollNumberCheckException msg)
{
Console.WriteLine(msg.Message);
validateRollNumber();
}
});
if (!Flag)
{
Console.WriteLine("No such student roll number exists");
validateRollNumber();
}
}
// calling validateRollNumber method to perform roll number validation
validateRollNumber();
//create progress card object
ProgressCard progressCardObject = new ProgressCard();
TELUGU_MARKS:
try
{
Console.WriteLine("Enter marks scored in Telugu :");
var teluguMarks = Console.ReadLine();
if (String.IsNullOrEmpty(teluguMarks))
{
throw new emptyFieldException();
}
else if (!r.IsMatch(teluguMarks))
{
throw new studentMarksCheckException();
}
var teluguMarksInt = Convert.ToInt32(teluguMarks);
//check if marks range is between 0 & 100.
if (teluguMarksInt > 100 || teluguMarksInt < 0)
{
Console.WriteLine("Marks should range between 0 & 100 .");
goto TELUGU_MARKS;
}
progressCardObject.TeluguMarks = teluguMarksInt;
}
catch (emptyFieldException msg)
{
Console.WriteLine(msg.Message);
goto TELUGU_MARKS;
}
catch (studentMarksCheckException msg)
{
Console.WriteLine(msg.Message);
goto TELUGU_MARKS;
}
HINDI_MARKS:
try
{
Console.WriteLine("Enter marks scored in Hindi :");
var hindiMarksString = Console.ReadLine();
// check Marks field is empty or not.
if (String.IsNullOrEmpty(hindiMarksString))
{
throw new emptyFieldException();
}
else if (!r.IsMatch(hindiMarksString))
{
throw new studentMarksCheckException();
}
var hindiMarksInt = Convert.ToInt32(hindiMarksString);
//check if marks range is between 0 & 100.
if (hindiMarksInt > 100 || hindiMarksInt < 0)
{
Console.WriteLine("Marks should range between 0 & 100 .");
goto HINDI_MARKS;
}
progressCardObject.HindiMarks = hindiMarksInt;
}
catch (emptyFieldException msg)
{
Console.WriteLine(msg.Message);
goto HINDI_MARKS;
}
catch (studentMarksCheckException msg)
{
Console.WriteLine(msg.Message);
goto HINDI_MARKS;
}
ENGLISH_MARKS:
try
{
Console.WriteLine("Enter marks scored in English :");
var englishMarksString = Console.ReadLine();
// check Marks field is empty or not.
if (String.IsNullOrEmpty(englishMarksString))
{
throw new emptyFieldException();
}
else if (!r.IsMatch(englishMarksString))
{
throw new studentMarksCheckException();
}
var englishMarksInt = Convert.ToInt32(englishMarksString);
//check if marks range is between 0 & 100.
if (englishMarksInt < 0 || englishMarksInt > 100)
{
Console.WriteLine("Marks should range between 0 & 100 .");
goto ENGLISH_MARKS;
}
progressCardObject.EnglishMarks = englishMarksInt;
}
catch (emptyFieldException msg)
{
Console.WriteLine(msg.Message);
goto ENGLISH_MARKS;
}
catch (studentMarksCheckException msg)
{
Console.WriteLine(msg.Message);
goto ENGLISH_MARKS;
}
MATHS_MARKS:
try
{
Console.WriteLine("Enter marks scored in Maths :");
var mathsMarksString = Console.ReadLine();
// check Marks field is empty or not.
if (String.IsNullOrEmpty(mathsMarksString))
{
throw new emptyFieldException();
}
else if (!r.IsMatch(mathsMarksString))
{
throw new studentMarksCheckException();
}
var mathsMarksInt = Convert.ToInt32(mathsMarksString);
//check if marks range is between 0 & 100.
if (mathsMarksInt < 0 || mathsMarksInt > 100)
{
Console.WriteLine("Marks should range between 0 & 100 .");
goto MATHS_MARKS;
}
progressCardObject.MathsMarks = mathsMarksInt;
}
catch (emptyFieldException msg)
{
Console.WriteLine(msg.Message);
goto MATHS_MARKS;
}
catch (studentMarksCheckException msg)
{
Console.WriteLine(msg.Message);
goto MATHS_MARKS;
}
SCIENCE_MARKS:
try
{
Console.WriteLine("Enter marks scored in Science :");
var scienceMarksString = Console.ReadLine();
// check Marks field is empty or not.
if (String.IsNullOrEmpty(scienceMarksString))
{
throw new emptyFieldException();
}
else if (!r.IsMatch(scienceMarksString))
{
throw new studentMarksCheckException();
}
var scienceMarksInt = Convert.ToInt32(scienceMarksString);
//check if marks range is between 0 & 100.
if (scienceMarksInt < 0 || scienceMarksInt > 100)
{
Console.WriteLine("Marks should range between 0 & 100 .");
goto SCIENCE_MARKS;
}
progressCardObject.ScienceMarks = scienceMarksInt;
}
catch (emptyFieldException msg)
{
Console.WriteLine(msg.Message);
goto SCIENCE_MARKS;
}
catch (studentMarksCheckException msg)
{
Console.WriteLine(msg.Message);
goto SCIENCE_MARKS;
}
SOCIAL_MARKS:
try
{
Console.WriteLine("Enter marks scored in Social :");
var socialMarksString = Console.ReadLine();
// check Marks field is empty or not.
if (String.IsNullOrEmpty(socialMarksString))
{
throw new emptyFieldException();
}
else if (!r.IsMatch(socialMarksString))
{
throw new studentMarksCheckException();
}
//check if marks range is between 0 & 100.
var socialMarksInt = Convert.ToInt32(socialMarksString);
if (socialMarksInt < 0 || socialMarksInt > 100)
{
Console.WriteLine("Marks should range between 0 & 100 .");
goto SOCIAL_MARKS;
}
}
catch (emptyFieldException msg)
{
Console.WriteLine(msg.Message);
goto SOCIAL_MARKS;
}
catch (studentMarksCheckException msg)
{
Console.WriteLine(msg.Message);
goto SOCIAL_MARKS;
}
Console.Clear();
//Adding all marks and pushing into total marks properties of the ProgressCard.
progressCardObject.Totalmarks = (progressCardObject.TeluguMarks + progressCardObject.HindiMarks + progressCardObject.EnglishMarks +
progressCardObject.MathsMarks + progressCardObject.ScienceMarks + progressCardObject.SocialMarks);
progressCardObject.Percentage = (double)(progressCardObject.Totalmarks) / 6;
//iterate through all the objects in Student prop. and match with the roll number.
schoolObject.Student.ForEach(roll =>
{
if (String.Equals(roll.StudentRollNumberString, rollNumber))
{
roll.ProgressCard.Add(progressCardObject);
}
});
//goto menu method.
menu();
}
// If option 3 is selected from the menu following code fill run.
else if (option == 3)
{
string rollNumber; //making a rollNumber variable to perform operation for that student.
void validateRollProgressCard()
{ //function to verify roll number .
Console.WriteLine("Enter Student's roll number :");
rollNumber = Console.ReadLine();
bool Flag = false;
try
{
if (String.IsNullOrEmpty(rollNumber))
{
throw new emptyFieldException();
}
else if (!r.IsMatch(rollNumber))
{
throw new rollNumberCheckException();
}
schoolObject.Student.ForEach(roll =>
{
Console.WriteLine(roll.StudentRollNumberString);
Regex r = new Regex("^[0-9]+$");
if (String.Equals(roll.StudentRollNumberString, rollNumber))
{
Flag = true;
Console.WriteLine("Student's Roll Number : " + roll.StudentRollNumberString);
Console.WriteLine("Student's Name : " + roll.StudentName + "\n");
Console.WriteLine("Student's Marks");
roll.ProgressCard.ForEach(card =>
{
//display telugu marks.
Console.WriteLine("Telugu :" + card.TeluguMarks);
//display telugu marks.
Console.WriteLine("Hindi :" + card.HindiMarks);
//display english marks.
Console.WriteLine("English :" + card.EnglishMarks);
//display maths marks.
Console.WriteLine("Maths :" + card.MathsMarks);
//display Science marks.
Console.WriteLine("Science :" + card.ScienceMarks);
//display Social marks.
Console.WriteLine("Social :" + card.SocialMarks + "\n");
//display total marks.
Console.WriteLine("Total Marks :" + card.Totalmarks);
//display Percentage upto 2 decimal points.
Console.WriteLine("Percentage :" + Math.Round((double)card.Totalmarks / 6, 2) + " %");
menu();
});
}
else if (!Flag)
{
Console.WriteLine("No such student roll number exists");
//call the function to validate roll number again
validateRollProgressCard();
}
});
}
catch (emptyFieldException msg)
{
Console.WriteLine(msg.Message);
validateRollProgressCard();
}
catch (rollNumberCheckException msg)
{
Console.WriteLine(msg.Message);
validateRollProgressCard();
}
}
// calling validateRollNumber method to perform roll number validation
validateRollProgressCard();
}
}
menu();
}
public Student()
{
ProgressCards = new ProgressCard();
}
