//********************************************************************************************
//public static Dictionary<int, StudentData> Addmark(Dictionary<int, StudentData> newDict)
//Purpose: Add student marks to the database
//Parameters: Dictionary<int, StudentData> newDict
//Returns: newDict
//*********************************************************************************************
public static Dictionary<int, StudentData> Addmark(Dictionary<int, StudentData> newDict)
{
Marks newMark;
int ID;
double Value;
double OutOf;
double Weight;
Console.Write("Student ID: ");
int.TryParse(Console.ReadLine(), out ID);
Console.Write("\nMark value: ");
double.TryParse(Console.ReadLine(), out Value);
Console.Write("\nOut of: ");
double.TryParse(Console.ReadLine(), out OutOf);
Console.Write("\nMark weight: ");
double.TryParse(Console.ReadLine(), out Weight);
newMark._ID = ID;
newMark._OutOf = OutOf;
newMark._Value = Value;
newMark._Weight = Weight;
newDict[ID]._Markslist.Add(newMark);
return newDict;
}
//********************************************************************************************
//public static Dictionary<int, StudentData> AddStudent(Dictionary<int, StudentData> newDict)
//Purpose: Add students to the database
//Parameters: Dictionary<int, StudentData> newDict
//Returns: newDict
//*********************************************************************************************
public static Dictionary<int, StudentData> AddStudent(Dictionary<int, StudentData> newDict)
{
int ID;
string FirstName;
string Surname;
StudentData newData = new StudentData();
List<Marks> newList = new List<Marks>();
do
{
Console.Write("Please enter the Student ID: ");
int.TryParse(Console.ReadLine(), out ID);
if (ID < 100000 || ID > 999999)
Console.WriteLine("\n\tThat is an invalid ID\n");
}
while (ID < 100000 || ID > 999999);
Console.Write("\nPlease enter the student's last name: ");
Surname = Console.ReadLine();
Console.Write("\nPlease enter the student's first name: ");
FirstName = Console.ReadLine();
Console.WriteLine("");
newData._StudentID = ID;
newData._LastName = Surname;
newData._Firstname = FirstName;
newData._Markslist = newList;
newDict.Add(ID, newData);
return newDict;
}
public static void SearchByLastName(Dictionary<int, StudentData> newDict)
{
string nameInput = "";
int count = 0;
Console.WriteLine("\n");
Console.WriteLine("What last name would like records for?: ");
nameInput = Console.ReadLine().ToUpper();
foreach (KeyValuePair<int, StudentData> e in newDict)
{
if (e.Value._LastName.ToUpper() == nameInput)
{
Console.WriteLine(e.Value);
count++;
}
}
if (count == 0)
{
Console.WriteLine("no records with that name found.\n");
}
else
{
Console.WriteLine("");
}
}
public static void ListAll(Dictionary<int, StudentData> newDict)
{
string temp = "";
int count = 0;
List<String> templist = new List<string>();
Dictionary<String, StudentData> tempDict = new Dictionary<string, StudentData>();
foreach (KeyValuePair<int, StudentData> e in newDict)
{
if (tempDict.ContainsKey(e.Value._LastName))
{
temp = e.Value._LastName + count.ToString();
tempDict.Add(temp, e.Value);
templist.Add(temp);
}
else
{
tempDict.Add(e.Value._LastName, e.Value);
templist.Add(e.Value._LastName);
}
}
templist.Sort();
Console.WriteLine("\n");
foreach (String i in templist)
{
Console.WriteLine(tempDict[i]);
}
Console.WriteLine("");
}
public static void SearchByID(Dictionary<int, StudentData> newDict)
{
int SearchID;
bool success;
Console.WriteLine("\n");
do
{
Console.Write("What ID would you like to search for?: ");
success = int.TryParse(Console.ReadLine(), out SearchID);
}
while (success == false || SearchID > 999999 || SearchID <100000);
if (newDict.ContainsKey(SearchID))
{
Console.WriteLine(newDict[SearchID]);
}
else
{
Console.WriteLine("There is no student with that ID");
}
}
static void Main(string[] args)
{
ConsoleKey input; //Stores user menu inputs
String LineRead; //Holds StreamReader line reads
String[] temp = null; //temp array to hold StreamReader buffer
int ID = 0; //holds student ID numbers read in from file
StreamReader newStreamReader; //Reads stream from students file
StreamReader marksReader; //Reads stream from marks file
Dictionary<int, StudentData> myDictionary = new Dictionary<int, StudentData>();//Student Dictionary
try
{
//Opens stream to Students.txt
newStreamReader = new StreamReader("Students.txt");
try
{
//Reads each line in while the next line in not empty
while ((LineRead = newStreamReader.ReadLine()) != null)
{
//Stores and splits the string that is read in
temp = LineRead.Split(new char[] { ',', ' ' }, StringSplitOptions.RemoveEmptyEntries);
//Parses the ID number from the string array
int.TryParse(temp[2], out ID);
//Creates and stores a student value
StudentData newStudent = new StudentData(temp[0], temp[1], ID, new List<Marks>());
//Stores the student value in the dictionary
myDictionary.Add(ID, newStudent);
}
}
catch (Exception e)
{
}
finally
{
//Closes the stream to Students.txt
newStreamReader.Close();
}
}
catch (Exception e)
{
}
try
{
//Opens a stream to Marks.txt
marksReader = new StreamReader("Marks.txt");
try
{
//Reads each line in from Marks.txt while the next line s not null
while ((LineRead = marksReader.ReadLine()) != null)
{
double Value, OutOf, Weight; //Variables to store data read in from the file
temp = LineRead.Split(new char[] { ' ' }, StringSplitOptions.RemoveEmptyEntries); //splits the values in the array and stores them
double.TryParse(temp[1], out Value); //Parses mark value to a double
double.TryParse(temp[2], out OutOf); //Parses value mark is out of to a double
double.TryParse(temp[3], out Weight); //parses mark weight to a double
int.TryParse(temp[0], out ID); //Parses Student ID to an int
//Creates a stores the values as a new mark structure
Marks newMark = new Marks(Value, OutOf, Weight, ID);
//Stores marks in a list in dictionray
if (myDictionary.ContainsKey(newMark._ID))
myDictionary[newMark._ID]._Markslist.Add(newMark);
}
}
catch (Exception e)
{
}
finally
{
//closes stream to Marks.txt
marksReader.Close();
}
}
catch (Exception e)
{
}
//foreach (Marks i in secondList)
//{
//if(myDictionary.ContainsKey(i._ID))
// myDictionary[i._ID]._Markslist.Add(i);
//}
do
{
//Displays the menu for the database
Console.WriteLine("{0} Student Records found", myDictionary.Count);
Console.WriteLine("");
Console.WriteLine("A - Add new student");
Console.WriteLine("M - Add new mark");
Console.WriteLine("L - List all records (Alphabetical Order)");
Console.WriteLine("S - Search by student ID");
Console.WriteLine("N - Search by last name");
Console.WriteLine("Q - Quit");
Console.WriteLine("X - Quit and save to disk");
Console.WriteLine("");
Console.Write("Your choice? ");
//Reads user menu commands
input = Console.ReadKey(true).Key;
//Switch to control the menu
switch (input)
{
case ConsoleKey.A:
AddStudent(myDictionary);
break;
case ConsoleKey.M:
Addmark(myDictionary);
break;
case ConsoleKey.L:
ListAll(myDictionary);
break;
case ConsoleKey.S:
SearchByID(myDictionary);
break;
case ConsoleKey.N:
SearchByLastName(myDictionary);
break;
case ConsoleKey.Q:
input = QuitConfirm(input);
break;
case ConsoleKey.X:
SaveAndQuit(myDictionary);
break;
}
}
//Loops menu while user input is not Q
while (input != ConsoleKey.Q && input != ConsoleKey.X);
}
public static void SaveAndQuit(Dictionary<int, StudentData> newDict)
{
StreamWriter newWriter = new StreamWriter("Students.txt");
try
{
foreach (StudentData i in newDict.Values)
{
newWriter.WriteLine("{0} {1} {2}", i._LastName, i._Firstname, i._StudentID);
}
}
catch (Exception e)
{
}
finally
{
newWriter.Close();
}
newWriter = new StreamWriter("Marks.txt");
try
{
foreach (StudentData i in newDict.Values)
{
foreach (Marks l in i._Markslist)
{
newWriter.WriteLine(l.ToString());
}
}
}
catch (Exception e)
{
}
finally
{
newWriter.Close();
}
}
//********************************************************************************************
//Method: public static void ListAll(Dictionary<int, StudentData> newDict)
//Purpose: Lists all student marks
//Parameters: Dictionary<int, StudentData> newDict
//Returns: nothing
//*********************************************************************************************
public static void ListAll(Dictionary<int, StudentData> newDict)
{
string temp = ""; //Varaible to store a string
int count = 0; //Variable to count
List<String> templist = new List<string>();
Dictionary<String, StudentData> tempDict = new Dictionary<string, StudentData>();
foreach (KeyValuePair<int, StudentData> e in newDict)
{
if (tempDict.ContainsKey(e.Value._LastName))
{
temp = e.Value._LastName + count.ToString();
tempDict.Add(temp, e.Value);
templist.Add(temp);
}
else
{
tempDict.Add(e.Value._LastName, e.Value);
templist.Add(e.Value._LastName);
}
}
templist.Sort();
Console.WriteLine("\n");
foreach (String i in templist)
{
Console.WriteLine(tempDict[i]);
foreach (Marks l in tempDict[i]._Markslist)
{
Console.WriteLine("Mark: {0}, OutOf: {1}, Weight {2}", l._Value, l._OutOf, l._Weight);
}
}
Console.WriteLine("");
}
static void Main(string[] args)
{
ConsoleKey input;
String LineRead;
String[] temp = null;
int ID;
int count = 0;
StreamReader newStreamReader;
Dictionary<int,StudentData> myDictionary = new Dictionary<int,StudentData>();
try
{
newStreamReader = new StreamReader("Students.txt");
try
{
while ((LineRead = newStreamReader.ReadLine()) != null)
{
temp = LineRead.Split(new char[] { ',', ' ' }, StringSplitOptions.RemoveEmptyEntries);
int.TryParse(temp[2], out ID);
StudentData newStudent = new StudentData(temp[0], temp[1], ID);
myDictionary.Add(ID, newStudent);
count++;
}
}
catch (Exception e)
{
}
finally
{
newStreamReader.Close();
}
}
catch (Exception e)
{
}
do
{
Console.WriteLine("{0} Student Records found", count);
Console.WriteLine("");
Console.WriteLine("L - List all records (Alphabetical Order)");
Console.WriteLine("S - Search by student ID");
Console.WriteLine("N - Search by last name");
Console.WriteLine("Q - Quit");
Console.WriteLine("");
Console.Write("Your choice? ");
input = Console.ReadKey(true).Key;
switch (input)
{
case ConsoleKey.L:
ListAll(myDictionary);
break;
case ConsoleKey.S:
SearchByID(myDictionary);
break;
case ConsoleKey.N:
SearchByLastName(myDictionary);
break;
}
}
while(input != ConsoleKey.Q);
}
