public void ProcessGradeOptions(string fileName, Grades grades)
{
char option = Console.ReadKey().KeyChar;
Console.Clear();
switch (option)
{
case '0':
System.Environment.Exit(1);
break;
case '1':
foreach (KeyValuePair <string, List <int> > entry in grades.GetGradeDictionary())
{
string line = entry.Key + ": " + String.Join(", ", entry.Value);
Console.WriteLine(line);
}
break;
case '2':
Console.WriteLine("Enter name of the student");
try
{
string name = Console.ReadLine();
Console.Clear();
Console.WriteLine(name + ": " + String.Join(", ", grades.GetStudentGrades(name)));
}
catch
{
Console.Clear();
Console.WriteLine("! Invalid student name !");
}
break;
case '3':
foreach (KeyValuePair <string, List <string> > entry in grades.GetBestWorstStudent())
{
string line = entry.Key + ": " + String.Join(", ", entry.Value);
Console.WriteLine(line);
}
break;
case '4':
Console.WriteLine("Enter please the grade");
if (float.TryParse(Console.ReadKey().KeyChar.ToString(), out float grade))
{
List <string> students = grades.GetBetterStudents(grade);
Console.Clear();
if (students == null || students.Count == 0)
{
Console.WriteLine("no student with better result found...");
}
Console.WriteLine(String.Join(", ", students));
}
else
{
Console.Clear();
Console.WriteLine("Invalid grade has been provided!");
}
break;
case '5':
Console.WriteLine(grades.GetOverallAverageGrade());
break;
case '6':
Console.WriteLine("Choose the test");
int numberOfTests = grades.GetTestsQuantity();
if (numberOfTests < 1)
{
Console.WriteLine("! There are no test results available !");
break;
}
for (int i = 0; i < numberOfTests; i++)
{
int testDisplayNumber = i + 1;
Console.WriteLine("[" + i + "] Test " + testDisplayNumber);
}
try
{
int testNumber = int.Parse(Console.ReadKey().KeyChar.ToString());
Console.Clear();
Console.WriteLine(grades.GetTestAverageGrade(testNumber));
}
catch
{
Console.Clear();
Console.WriteLine("! Invalid Test number !");
}
break;
case '7':
int newTestNumber = grades.GetTestsQuantity() + 1;
IDictionary <string, List <int> > gradesCopy = new Dictionary <string, List <int> >(grades.GetGradeDictionary());
foreach (KeyValuePair <string, List <int> > entry in gradesCopy)
{
string line = "Enter Test " + newTestNumber;
line += " (new) result for student: " + entry.Key;
Console.Clear();
Console.WriteLine(line);
bool isCorrectInput = false;
while (!isCorrectInput)
{
if (int.TryParse(Console.ReadKey().KeyChar.ToString(), out int newGrade))
{
grades.AddStudentGrade(entry.Key, newGrade);
isCorrectInput = true;
}
else
{
Console.WriteLine("\n! Invalid grade has been provided!");
Console.WriteLine("\nPress [0] to go back to menu");
Console.WriteLine("Press any other key to try again");
option = Console.ReadKey().KeyChar;
switch (option)
{
case '0':
isCorrectInput = true;
break;
default:
break;
}
}
}
}
FileReader.OverwriteStudentGrades(fileName, grades.GetGradeDictionary());
break;
default:
break;
}
Console.ReadKey();
}