public static void ReadStContainerFromFile(string path, StudentContainer readContainer)
{
try
{
using (StreamReader sr = new StreamReader(path, System.Text.Encoding.Default))
{
string line;
while ((line = sr.ReadLine()) != null)
{
var infoStudent = line.Split(new char[] { '|' });
readContainer.AddStudent(new Student(infoStudent[0],
infoStudent[1],
infoStudent[2],
DateTime.Parse(infoStudent[3]),
DateTime.Parse(infoStudent[4]),
char.Parse(infoStudent[5]),
infoStudent[6],
infoStudent[7],
double.Parse(infoStudent[8])));
}
}
}
catch (Exception e)
{
Console.WriteLine(e.Message);
}
}
public static void SaveCollectionInXML(StudentContainer studentContainer, string filename)
{
XmlSerializer x = new XmlSerializer(studentContainer.Students.GetType());
TextWriter writer = new StreamWriter(filename);
x.Serialize(writer, studentContainer.Students);
writer.Close();
}
public static double CalculateAverageAcademicPerformance(StudentContainer studentArray)
{
double sum = 0;
foreach (var student in studentArray.Students)
{
sum += student.Performance;
}
return(sum / studentArray.Students.Length);
}
public void DeleteStudents(StudentContainer removing)
{
for (int i = 0; i < removing.Students.Length; i++)
{
for (int j = 0; j < Students.Length; j++)
{
if (this.Students[j].Equals(removing.Students[i]))
{
DeleteStudent(j);
}
}
}
}
public static StudentContainer Search(String criteria, StudentContainer studentArray, int category)
{
var searched = new StudentContainer();
string groupIndex;
if (studentArray.Students != null)
{
switch (category)
{
case 0:
{
foreach (Student student in studentArray.Students)
{
if (student.GroupIndex.ToString().ToLower().Contains(criteria.ToLower()))
{
searched.AddStudent(student);
}
}
break;
}
case 1:
{
foreach (Student student in studentArray.Students)
{
if (student.Faculty.ToLower().Contains(criteria.ToLower()))
{
searched.AddStudent(student);
}
}
break;
}
case 2:
{
foreach (Student student in studentArray.Students)
{
if (student.Specialization.ToLower().Contains(criteria.ToLower()))
{
searched.AddStudent(student);
}
}
break;
}
}
return(searched);
}
return(new StudentContainer());
}
public static StudentContainer LoadCollectionFromXML(string filename)
{
XmlSerializer formatter = new XmlSerializer(typeof(Student[]));
using FileStream fs = new FileStream(filename, FileMode.OpenOrCreate);
Student[] newPeople = (Student[])formatter.Deserialize(fs);
Student[] arr = new Student[newPeople.Length];
var studentArray = new StudentContainer
{
Students = newPeople,
Empty = newPeople.Length == 0
};
studentArray.RecalculateValues();
return(studentArray);
}
public static void WriteStContainerToFile(string path, StudentContainer writtenContainer)
{
try
{
using (StreamWriter sw = new StreamWriter(path, false, System.Text.Encoding.Default))
{
foreach (var i in writtenContainer)
{
sw.WriteLine(i.ToInfoString());
}
}
}
catch (Exception e)
{
Console.WriteLine(e.Message);
}
}
public static void ShowContainer(StudentContainer students)
{
if (students != null)
{
Console.WriteLine("-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------");
Console.WriteLine("| № | Surname | Name | Patronymic | Date of birth | Enter date | Group index | Faculty | Specialty | Academic performance |");
Console.WriteLine("-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------");
int i = 0;
foreach (Student student in students)
{
String output = String.Format("| {0,-3} | {1,-15} | {2,-15} | {3,-16} | {4,-15} | {5,-12} | {6,-13} | {7,-29} | {8,-25} | {9,-25} |",
(i++), student.LastName, student.FirstName, student.Patronymic, student.BirthDate.ToString("dd.MM.yyyy"), student.EnterDate.ToString("dd.MM.yyyy"), student.GroupIndex, student.Faculty, student.Specialization, student.Performance);
Console.WriteLine(output);
}
Console.WriteLine("-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------");
}
else
{
Console.WriteLine("Array is empty");
}
}
public static void Start()
{
const string path = @"C:\Users\Дмитрий Соколенко\source\repos\DotNet\sokolenko05DN\file.txt";
const string xmlPath = @"C:\Users\Дмитрий Соколенко\source\repos\DotNet\sokolenko05DN\file.xml";
var pigsty = new StudentContainer();
char choice = 'a';
int intChoice;
string strChoice = "";
Console.WriteLine("Hello World! Our copany introduces the next level of data base - AllBase");
Console.WriteLine("The array of Student object is created, my lord.");
Io.ReadStContainerFromFile(path, pigsty);
while (choice != '0')
{
PrintMenu();
Console.Write("Make a choice: ");
choice = Io.InputChar();
switch (choice)
{
case '1':
PrintOptions();
Console.WriteLine("3 - All students");
Console.Write("Make a choice: ");
intChoice = Io.InputInt();
if (intChoice != 3)
{
Console.WriteLine("Enter criteria: ");
strChoice = Console.ReadLine();
Io.ShowContainer(StudentContainer.Search(strChoice, pigsty, intChoice));
}
else
{
Io.ShowContainer(pigsty);
}
break;
case '2':
pigsty.AddStudent(Io.InputStudent());
break;
case '3':
if (pigsty.Size() > 0)
{
Console.Write("Input the index: ");
pigsty.DeleteStudent(Io.InputInt());
}
else
{
Console.Write("Container is empty");
}
break;
case '4':
if (pigsty.Size() > 0)
{
Console.Write("Input the index: ");
pigsty.ShowByIndex(Io.InputInt());
}
else
{
Console.Write("Container is empty");
}
break;
case '5':
if (pigsty.Size() > 0)
{
Console.Write("Input the index: ");
pigsty.EditByIndex(Io.InputInt());
}
else
{
Console.Write("Container is empty");
}
break;
case '6':
PrintOptions();
Console.Write("Make a choice: ");
intChoice = Io.InputInt();
Console.WriteLine("Enter criteria: ");
strChoice = Console.ReadLine();
pigsty.DeleteStudents(StudentContainer.Search(strChoice, pigsty, intChoice));
break;
case '7':
PrintMathematicOptions();
Console.Write("Make a choice: ");
intChoice = Io.InputInt();
StudentContainerProcessing.Del del = null;
switch (intChoice)
{
case 0:
{
del = StudentContainerProcessing.CalculateAverageAge;
break;
}
case 1:
{
del = StudentContainerProcessing.CalculateAverageAcademicPerformance;
break;
}
}
PrintOptions();
Console.Write("Make a choice: ");
intChoice = Io.InputInt();
Console.WriteLine("Enter criteria: ");
strChoice = Console.ReadLine();
Console.WriteLine(del?.Invoke(StudentContainer.Search(strChoice, pigsty, intChoice)));
break;
case '8':
Serialization.SaveCollectionInXML(pigsty, xmlPath);
break;
case '9':
pigsty = Serialization.LoadCollectionFromXML(xmlPath);
break;
}
}
Io.WriteStContainerToFile(path, pigsty);
}
