In C# please, also please try to be detail in your explanation so I can follow y
ID: 3925017 • Letter: I
Question
In C# please, also please try to be detail in your explanation so I can follow your directions. *please instruct where the text file should be put* main reason why I'm having hard time having this problem to work. Thanks
Create a program that stores student grades in a text file. The fileshould contain the name, ID number, class taken and grade of every student. Allow the user to load a grade file and display its contents in a read-only TextBox . The entries should be displayed in thefollowing format:
LastName, FirstName: ID# Class Grade
We list some sample data below:
Jones, Bob: 1 "Introduction to Computer Science" "A-"
Johnson, Sarah: 2 "Data Structures" "B+"
Smith, Sam: 3 "Data Structures" "C"
Explanation / Answer
Program.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.IO;//Mandatory to access System I/O functionality
namespace Assignment5
{
class Program
{
static void Main(string[] args)
{
MenuMethod();
}
//************************* Menu Method **********************************
private static void MenuMethod()
{
string pathName = Directory.GetParent(Directory.GetCurrentDirectory()).Parent.FullName; //updates the current working path as Path Name
string fileName = "GradeFile.txt"; //declare the file name
int choice = 0;
while (choice != 2) //menu
{
Console.WriteLine("+++++++++++++++++++++++++++");
Console.WriteLine("+ Menu +");
Console.WriteLine("+ 1.Display Grades +");
Console.WriteLine("+ 2.Exit +");
Console.WriteLine("+++++++++++++++++++++++++++");
Console.Write("Enter your choice: ");
//Try-catch Block for handling Exceptions
try
{
choice = Convert.ToInt32(Console.ReadLine());
}
catch (Exception error)
{
choice = 0;
Console.WriteLine(error.Message);
}
switch (choice)
{
case 1:
WriteFileMethod(pathName, fileName); //created the text file
CheckFile(); //check file if exist
ReadFileMethod(pathName, fileName); //display the file on console
break;
case 2://select to exit
Console.WriteLine();
break;
default: //display incorrect input message
Console.WriteLine();
Console.WriteLine("Incorrect input, please try again!");
Console.WriteLine();
WaitForKey(); //if incorrect input, then display wait for key info
break;
}
Console.Clear(); //clear the screen
}
}
//CheckFile Method++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
private static void CheckFile()
{
string prompt;
Console.Write("Please enter a file name: ");
prompt = Console.ReadLine();
Console.WriteLine();
if (File.Exists(prompt))
{
Console.WriteLine("The File Exists");
Console.WriteLine();
Console.WriteLine("File Stats:");
Console.WriteLine("+++++++++++++++++++++++++++++++++++++++++");
Console.WriteLine("Create Time: " + File.GetCreationTime(prompt));
Console.WriteLine("Last Access: " + File.GetLastAccessTime(prompt));
Console.WriteLine("Last Write : " + File.GetLastWriteTime(prompt));
Console.WriteLine("+++++++++++++++++++++++++++++++++++++++++");
}
else
{
Console.WriteLine("No such file");
}
WaitForKey();
}
//WriteFile Method++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
private static void WriteFileMethod(string pathName, string fileName)
{
try
{
FileStream outFile = new FileStream(pathName + fileName, FileMode.Create, FileAccess.Write); //created outFile in current path
StreamWriter writer = new StreamWriter(outFile); //declares a Write Variable
//Arrays Information
string[] firstName = { "Jones", "Johnson", "Smith" };
string[] lastName = { "Bob", "Sarah", "Sam" };
int[] ID = { 1, 2, 3 };
string[] classes = { "Introduction to Computer Science", "Data Structures", "Data Structures" };
string[] grade = { "A-", "B+", "C" };
//write data to the outFIle
for (int i = 0; i < 3; i++)
{
writer.WriteLine("{0}, {1}: {2} {3}, {4}", firstName[i], lastName[i], ID[i], classes[i], grade[i]);
}
writer.Close(); // closes the file
outFile.Close(); // closes the file stream
}
catch (Exception error)
{
Console.WriteLine("Your code caused an error!!!");
Console.WriteLine("Error: {0} ", error.Message);
}
}
//ReadFile Method++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
private static void ReadFileMethod(string pathName, string fileName)
{
string fileData = "";
string[] fileArray = new string[10];
try
{
FileStream inFile = new FileStream(pathName + fileName, FileMode.Open, FileAccess.Read);
StreamReader reader = new StreamReader(inFile);
for (int row = 0; row < 10; row++)
{
fileData = reader.ReadLine();
fileArray[row] = fileData;
Console.WriteLine("Your Data: {0}", fileData);
} // Read one record (line of data)
reader.Close(); // closes the file
inFile.Close(); // closes the file stream
}
catch (Exception error)
{
Console.WriteLine("Your code caused an error!!!");
Console.WriteLine("Error: {0} ", error.Message);
}
}
// UTILITY METHODS++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
private static void WaitForKey()
{
Console.WriteLine();
Console.WriteLine("++++++++++++++++++++++++++++++++++");
Console.WriteLine("Press any key to continue...");
Console.WriteLine("++++++++++++++++++++++++++++++++++");
Console.ReadKey();
Console.Clear();
}
}
}
GradeFile.txt
Jones, Bob: 1 Introduction to Computer Science, A-
Johnson, Sarah: 2 Data Structures, B+
Smith, Sam: 3 Data Structures, C