goh | tidy library aims to avoid some default manipulations | Functional Programming library

  class Program
{
    static void Main(string[] args)
    {
        //read all employees from files
        var employees = ReadEmployes(@"filepathhere");

        //store for the different departments
        var coprateAdmins = new List();
        var procurementDept = new List();
        var itDept = new List();


        foreach (var employee in employees)
        {
            //classify employee here with switch case on department

            switch (employee.Department)
            {
                case "IT Department":
                    itDept.Add(ToString(employee));
                    break;
                case "HR Corporate Admin":
                    coprateAdmins.Add(ToString(employee));
                    break;

                case "Procurement Department":
                    procurementDept.Add(ToString(employee));
                    break;

                default:
                    break;
            }
        }

        //writing files stage feel free to rename as accordingly
        WriteFile("IT.txt", itDept);
        WriteFile("procurement.txt", procurementDept);
        WriteFile("coporateAdmins.txt", coprateAdmins);

    }

    /// 
    /// helper function to write files given names
    /// 
    /// 
    /// 
    private static void WriteFile(string name, List employees)
    {

        File.WriteAllLines(name, employees);
    }


    /// 
    /// helper function to read employees from a file
    /// 
    /// path of the text file
    /// 
    private static List ReadEmployes(string path)
    {
        var employees = new List();
        
        //the employees will be read separated by new lines
        var content = File.ReadAllText(path);

        //split by new line into an array of employee information in text
        var lines = content.Split('\n');

        //map each employee with their properies assumes all records will have the same order in columns
        foreach (var line in lines)
        {
            var properties = line.Split('|');

            employees.Add(new Employee
            {
                Nric = properties[0],
                FullName = properties[1],
                Salutation = properties[2],
                StartDate = DateTime.ParseExact(properties[3], "dd/MM/yyyy", CultureInfo.InvariantCulture),
                Designation = properties[4],
                Department = properties[5],
                MobileNo = properties[6],
                HireType = properties[7],
                Salary = double.Parse(properties[8])
            });
        }

        return employees;
    }

    /// 
    /// helper function that uses c# reflection to get an employees properties then map to a string format similar to your input file
    /// 
    /// 
    /// 
    /// 
    public static string ToString(T instance)
    {
        var builder = new StringBuilder();

        foreach (PropertyInfo pi in instance.GetType().GetProperties())
        {
            if (pi.GetValue(instance) != null)
            {
                builder.Append(pi.GetValue(instance));
                builder.Append('|');
            }
        }

        return builder.ToString();
    }

}


/// 
/// employee details
/// 
public class Employee
{
    public string Nric { get; set; }
    public string FullName { get; set; }
    public string Salutation { get; set; }
    public DateTime StartDate { get; set; }
    public string Designation { get; set; }
    public string Department { get; set; }
    public string MobileNo { get; set; }
    public string HireType { get; set; }
    public double Salary { get; set; }
    public double MonthlyPayout { get; set; }
}

/// 
/// coroporate admin model
/// 
public class CorporateAdmin
{
    public string FullName { get; set; }
    public string Designation { get; set; }
    public string Department { get; set; }
}

/// 
/// procurement model
/// 
public class ProcurementDepartment
{
    public string Salutation { get; set; }
    public string FullName { get; set; }
    public string MobileNo { get; set; }
    public string Designation { get; set; }
    public string Department { get; set; }
}

/// 
/// it deparment model
/// 
public class ITDepartment
{
    public string Nric { get; set; }
    public string FullName { get; set; }
    public DateTime StartDate { get; set; }
    public string Department { get; set; }
    public string MobileNo { get; set; }
}

public static void main(String[] args) {
    String mystring = "hello";
    System.out.println(removeH1(mystring));
}

private static String removeH1(String mystring) {
    while (mystring.contains("")) {
        mystring = mystring.substring(0, mystring.indexOf("")) + mystring.substring(mystring.indexOf("") + 5);
    }
    return mystring;
}