Please need HELP! to solve the following. c# newbie

Jesse Pazzi

8y1.3k

You have to create two classes. The first class “Employee” which included: The private variables:

• first name

• last name

• id number (Format: A#####)

• Wage

• hoursWorked

The hoursWorked variable holds how many total hours the person worked. When the hoursWorked is over 40 hours, it will be considered as over time. Wage holds how much the person makes per hour. After passing the 40 hours, they get 1.5 x the wage for each additional hour worked.

The functions:

• Constructors

• Properties

• GetGrossPay: calculate the gross pay for the employee (Be careful with the over time)

The second class will be “EmployeeDemo” class with the main function. In the main function, Read the data from the “employeeinfo.txt” file and save the data in the array of (Employee) objects. In the file, the first number is the total number of employees and each employee’s information.

After import the data, display a menu for user to choose:

1. Display all employees

2. Add New employee

3. Quit the program (save the information to “employeeinfo.txt” file)

(employeeinfo.txt)

John

A00001

14.50

Bob

A00002

10.50

Jenny

Pena

A00003

7.25

Sam

Sosa

A00004

Linda

Jodan

A00005

20.5

46.5

Thanks.

I have the following but for some reason is not working. any help will be appreciated...

namespace ConsoleApplication7

{

class Employee

{

//private variables

private string firstName;

private string lastName;

private string idNumber;

private double empWage;

private double hoursWorked;

//constroctor for employee

public Employee()

{}

public void setData(string afirstName, string bsecondName, string cidNumber, double dempWage, double ehoursWorked)

{

firstName = afirstName;

lastName = bsecondName;

idNumber = cidNumber;

empWage = dempWage;

hoursWorked = ehoursWorked;

}

//calculating the gross payment for the employee

public double GetGrossPay()

{

double perHour = empWage / hoursWorked;

if (hoursWorked > 40)

return empWage + (1.50 * perHour * (hoursWorked - 40));

else

return empWage;

}

public void showEmployee()

{

double getPay = GetGrossPay();

Console.WriteLine(firstName + "," + lastName + "," + idNumber + "," + empWage + "," + hoursWorked + "," + getPay);

}

_____________________________________

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

using System.IO;

namespace ConsoleApplication7

{

class EmployeeDemo

{

static void Main()

{

int counter = 0, emp_c = 0;

Employee[] empdata = new Employee[0];

string line, emp = "";

// Open the file

using (StreamReader file = new StreamReader(@"C:\Users\jesse.cantu\Documents\Visual Studio 2012\Projects\Employee\ConsoleApplication7\bin\Debug\employeeinfo.txt"))

// Read the file and display it line by line.

while ((line = file.ReadLine()) != null)

{

while (!file.EndOfStream)

{

emp = emp + "," + line;

if (counter == 0)

{

Array.Resize(ref empdata, empdata.Length + Int32.Parse(line));

emp = "";

}

if (counter % 5 == 0 && counter > 0)

{

string[] strArr = null;

strArr = emp.Split(',');

empdata[emp_c].setData(strArr[0], strArr[1], strArr[2], double.Parse(strArr[3]), double.Parse(strArr[4]));

emp_c++;

emp = "";

}

counter++;

}

file.Close();

for (int i = 0; i < empdata.Length; i++)

{

empdata[i].showEmployee();

}

7 Replies

Know the answer? Post it — somebody with the same question will find it here.

Laxmidhar Sahoo8y ago
1- cretate a new window project
2-add a window form
3-drag and drop a button from tool box
4-double click on the button
5-at the code behine in the event pest the code
string path = Application.StartupPath + "\\" + "employeeinfo.txt";

          List<string> demo = EmployeeDemo.dis(path);

          string[] str = demo.ToArray();
add a class file and pest the bellow code

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.IO;
namespace webresponse
{


    class Employee
    {
        //private variables
        private string firstName;
        private string lastName;
        private string idNumber;
        private double empWage;
        private double hoursWorked;
        //constroctor for employee
        public Employee()
        { }
        public void setData(string afirstName, string bsecondName, string cidNumber, double dempWage, double ehoursWorked)
        {
            firstName = afirstName;
            lastName = bsecondName;
            idNumber = cidNumber;
            empWage = dempWage;
            hoursWorked = ehoursWorked;
        }
        //calculating the gross payment for the employee
        public double GetGrossPay()
        {
            double perHour = empWage / hoursWorked;
            if (hoursWorked > 40)
                return empWage + (1.50 * perHour * (hoursWorked - 40));
            else
                return empWage;
        }
        public string showEmployee()
        {
            double getPay = GetGrossPay();
         string str = firstName + "," + lastName + "," + idNumber + "," + empWage + "," + hoursWorked + "," + getPay;
         return str;
        }
    }

    class EmployeeDemo
    {
      public  static List<string> dis(string path)
        {
            List<string> datashow = new List<string>();
            int counter = 0, emp_c = 0;
            Employee[] empdata = new Employee[0];
            string line, emp = "";
            // Open the file

            using (StreamReader file = new StreamReader(path))
            {
                // Read the file and display it line by line.
                line = file.ReadLine();
                string objnos = line;
                while (objnos != null)
                {
                    while (!file.EndOfStream)
                    {
                        line = file.ReadLine();
                        emp = emp + "," + line;
                        if (counter == 0)
                        {
                            Array.Resize(ref empdata, empdata.Length + Int32.Parse(objnos));
                            counter = counter + 1;
                            //emp = "";
                        }
                        if (counter % 5 == 0 && counter > 0)
                        {
                            string[] strArr = new string[5];
                            emp = emp.Substring(1);
                            strArr = emp.Split(',');
                            Employee obj = new Employee();
                            obj.setData(strArr[0], strArr[1], strArr[2], double.Parse(strArr[3]), double.Parse(strArr[4]));
                            try
                            {

                                empdata[emp_c] = obj;
                                if (emp_c == 4)
                                    break;
                            }
                            catch (Exception)
                            {

                                // throw;
                            }

                            emp_c++;
                            emp = "";
                        }
                        counter++;
                    }
                    file.Close();
                    if (emp_c == 4)
                        break;

                }

            }
            for (int i = 0; i < empdata.Length; i++)
            {
                datashow.Add(empdata[i].showEmployee());
            }
            return datashow;
        }
    }
}

run the project break the string array is filled up and can access in the button event
you can capture the data in list view or in other
Jesse Pazzi8y ago
Thanks Laxmidhar Sahoo

I am getting the following after a hit run:

does not contain a static 'Main' method suitable for an entry point
Laxmidhar Sahoo8y ago
hell sir

I submit yor solved code bellow.But I solved it in win form application

first create the text file in the debug folder that a send with the attachment.
then in win application pest the code
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.IO;
namespace webresponse
{


    class Employee
    {
        //private variables
        private string firstName;
        private string lastName;
        private string idNumber;
        private double empWage;
        private double hoursWorked;
        //constroctor for employee
        public Employee()
        { }
        public void setData(string afirstName, string bsecondName, string cidNumber, double dempWage, double ehoursWorked)
        {
            firstName = afirstName;
            lastName = bsecondName;
            idNumber = cidNumber;
            empWage = dempWage;
            hoursWorked = ehoursWorked;
        }
        //calculating the gross payment for the employee
        public double GetGrossPay()
        {
            double perHour = empWage / hoursWorked;
            if (hoursWorked > 40)
                return empWage + (1.50 * perHour * (hoursWorked - 40));
            else
                return empWage;
        }
        public string showEmployee()
        {
            double getPay = GetGrossPay();
         string str = firstName + "," + lastName + "," + idNumber + "," + empWage + "," + hoursWorked + "," + getPay;
         return str;
        }
    }

    class EmployeeDemo
    {
      public  static List<string> dis(string path)
        {
            List<string> datashow = new List<string>();
            int counter = 0, emp_c = 0;
            Employee[] empdata = new Employee[0];
            string line, emp = "";
            // Open the file

            using (StreamReader file = new StreamReader(path))
            {
                // Read the file and display it line by line.
                line = file.ReadLine();
                string objnos = line;
                while (objnos != null)
                {
                    while (!file.EndOfStream)
                    {
                        line = file.ReadLine();
                        emp = emp + "," + line;
                        if (counter == 0)
                        {
                            Array.Resize(ref empdata, empdata.Length + Int32.Parse(objnos));
                            counter = counter + 1;
                            //emp = "";
                        }
                        if (counter % 5 == 0 && counter > 0)
                        {
                            string[] strArr = new string[5];
                            emp = emp.Substring(1);
                            strArr = emp.Split(',');
                            Employee obj = new Employee();
                            obj.setData(strArr[0], strArr[1], strArr[2], double.Parse(strArr[3]), double.Parse(strArr[4]));
                            try
                            {

                                empdata[emp_c] = obj;
                                if (emp_c == 4)
                                    break;
                            }
                            catch (Exception)
                            {

                                // throw;
                            }

                            emp_c++;
                            emp = "";
                        }
                        counter++;
                    }
                    file.Close();
                    if (emp_c == 4)
                        break;

                }

            }
            for (int i = 0; i < empdata.Length; i++)
            {
                datashow.Add(empdata[i].showEmployee());
            }
            return datashow;
        }
    }
}
The above code is a class file
The bellow is the form1.cs code called in button_click event
private void button2_Click(object sender, EventArgs e)
       {

           string path = Application.StartupPath + "\\" + "employeeinfo.txt";

           List<string> demo = EmployeeDemo.dis(path);

           string[] str = demo.ToArray();

       }
Laxmidhar Sahoo8y ago
ok sir
I try that in localy
Jesse Pazzi8y ago
Thanks for all those that view my post...
Jesse Pazzi8y ago
Thanks but for some reason i am still getting a Null Reference Exception (Object reference not set to an instance of an object) on line:
empdata[emp_c].setData(strArr[0], strArr[1], strArr[2], double.Parse(strArr[3]), double.Parse(strArr[4]));

any help will be appreciated.
Laxmidhar Sahoo8y ago
sir

here you only allocate memory for no element

Employee[] empdata = new Employee[0];

you have 5 elements so

you should change it to

Employee[] empdata = new Employee[5];