如何使用来自我的 Class 的数据构建 C# 列表

Question

I am a junior developer with very little experience using a class. I have create a class which looks like this.

 public class Employee
{
    public string EmpID { get; set; }
    public string Hours { get; set; }
    public string Minutes { get; set; }
    public string Pages { get; set; }
    public string Certs { get; set; }
    public double HourlyRate { get; set; }


}

} I use this code to populate the Class via the click of an asp button

 Employee emp1 = new Employee();
        emp1.EmpID = ddlSpecialist.SelectedValue;
        emp1.Hours = txtDetailsHours.Text;
        emp1.Minutes = txtDetailsMinutes.Text;
        emp1.Pages = TxtDetailsPages.Text;
        emp1.Certs = txtDetailsCertified.Text;
        emp1.HourlyRate = HR;

I assume everything is working and I am populating the class with records. I now want to build a list so can pull the data from the Class. And this is now where I am stuck I instantiate the list using

List<Employee> Emp = new List<Employee>();
 foreach (var item in Employee)
        {

        }

But from there I cannot figure out how to add records from the class.

I tried to build a foreach loop but I get a error "Employee is a type, which is not valid in the given context" I can find several example where the values I am trying to get from the class are hard coded but nothing where the data comes from the class.

The goal is to have aa group of textboxes with data. When the users provides the data in those boxes they would click a button that would take the values in the textboxes and store it in the class. The code behind would then clear the textboxes of their values and the user can now enter another batch of information that would get added to the class.

When the user was done entering the records I would want to loop thru the class and for each record in the class perform some simple mathematical calculations. So it kind of works like a calculator.

Answer 1

On this way you can add values to list.

public class Employee{
    public string EmpID { get; set; }
    public string Hours { get; set; }
    public string Minutes { get; set; }
    public string Pages { get; set; }
    public string Certs { get; set; }
    public double HourlyRate { get; set; } 
};

public static void Main()
{
    List<Employee> employees = new List<Employee>()
    {
        new Employee() {EmpID = 1},
        new Employee() {EmpID  = 2}
    };

    //or this way

    List<Employee> employees = new List<Employee>();
    employees.Add(new Employee() {EmpID = 1});
    employees.Add(new Employee() {EmpID = 2});


    foreach(var employee in employees)
    {
        Console.WriteLine(employee.EmpID);
    }
 }

Answer 2

edit

Okay, your new edit makes things a little clearer, but you still don't say what you wish to do with your data once it's been added to your Employee class.

Assuming that you're using ASP.NET, your code is probably structured in a pattern known as MVC, where M(for Model) is your Employee class, your ASP page is the V (for View) and you'll have another class/file that is the C (Controller).

Your UI page is used to populate an instance of Employee, as you've said, this is then passed through the controller to be stored, typically in a database of some sort.

The controller should provide either an empty instance of Employee to the View when it opens.

The "submit" button should trigger/call a Task in the controller to store the Employee instance. This may be on a list locally in the Controller or by direct call to the database, depending on your caching protocol.

Once stored the Controller should provide the View with a new, empty Employee instance.

Does this seem to make sense and is this relevant to your situation?

original answer below

Your question is a little unclear.

If you are gathering your data to populate your Employee instance from an ASP page and then looking at storing that data onto a remote server then how that is done will be dependent on your remote API.

You could get all of the data from any class properties Something like this?

using System.IO;
using System;
using System.Text;
using System.Reflection;
using System.Linq;

class Program
{
    static void Main()
    {
        Employee emp1 = new Employee();
        emp1.EmpID = "1234";
        emp1.Hours = "46";
        emp1.Minutes = "32";
        emp1.Pages = "5";
        emp1.Certs = "none";
        emp1.HourlyRate = 12.45;

        StringBuilder sb = new StringBuilder();
        sb.Append($"{emp1.GetType().Name}:");
        var props = emp1.GetType().GetProperties(BindingFlags.Public | BindingFlags.Instance)
                            .Where(p => p.CanRead);

        foreach (var p in props)
        {
           sb.Append($"{p.Name}=");
           sb.Append($"{p.GetValue(emp1).ToString()};");
        }

        Console.WriteLine(sb.ToString());
    }
}

Output:

Employee:EmpID=1234;Hours=46;Minutes=32;Pages=5;Certs=none;HourlyRate=12.45;