c# Creating a list with user input

Question

I'm fairly new to c# and having difficulty with lists.

I'm creating an application that takes in a user's name, age, and address, then stores it in a list when the user clicks the 'add' button. I'm using a GUI with text boxes for user input.

I have made a Customer class and unsure what to do next. I've followed tutorials and other questions but can't seem to find an answer.

public class Customer
{
    private string name;
    private Int32 age;
    private string address1;
    private string address2;
    private string address3;


    public string Name
    {
        get
        {
            return name;
        }

        // if name is blank throw argument asking user for input

        set
        {
            if (name == "")
            {
                throw new ArgumentException("Please enter your name");
            }
            else 
            {
                name = value;
            }
        }
    }

    public Int32 Age
    {
        get
        {
            return age;
        }

        set
        {
                age = value;
        }
    }


    // get/set address

    public string Address1
    {
        get
        {
            return address1;
        }

        set
        {
            if (address1 == "")
            {
                throw new ArgumentException("Please enter your address");
            }
            else
            {
                address1 = value;
            }
        }
    }

    public string Address2
    {
        get
        {
            return address2;
        }

        set
        {
            if (address2 == "")
            {
                throw new ArgumentException("Please enter your adress");
            }
            else
            {
                address2 = value;
            }
        }
    }

    public string Address3
    {
        get
        {
            return address3;
        }


        set
        {
            if (address3 == "")
            {
                throw new ArgumentException("Please enter your adress");
            }
            else
            {
                address3 = value;
            }
        }
    }

Answer 1

I think what you are looking for is in the MakeItHappen() method

using System;
using System.Collections.Generic;
using System.Windows.Forms;

namespace _41150122
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void btn_Go_Click(object sender, EventArgs e)
        {
            MakeItHappen();
        }

        private void MakeItHappen()
        {
            List<Customer> customerList = new List<Customer>();//initialize your List<Customer>
            customerList.Add(new Customer { Name = txtbx_Name.Text, Address1 = txtbx_Address1.Text, Age = int.Parse(txtbx_Age.Text) });//add a record to it
        }
    }



    public class Customer
    {
        private string name;
        private Int32 age;
        private string address1;
        private string address2;
        private string address3;


        public string Name
        {
            get
            {
                return name;
            }

            // if name is blank throw argument asking user for input

            set
            {
                if (name == "")
                {
                    throw new ArgumentException("Please enter your name");
                }
                else
                {
                    name = value;
                }
            }
        }

        public Int32 Age
        {
            get
            {
                return age;
            }

            set
            {
                age = value;
            }
        }


        // get/set address

        public string Address1
        {
            get
            {
                return address1;
            }

            set
            {
                if (address1 == "")
                {
                    throw new ArgumentException("Please enter your address");
                }
                else
                {
                    address1 = value;
                }
            }
        }

        public string Address2
        {
            get
            {
                return address2;
            }

            set
            {
                if (address2 == "")
                {
                    throw new ArgumentException("Please enter your adress");
                }
                else
                {
                    address2 = value;
                }
            }
        }

        public string Address3
        {
            get
            {
                return address3;
            }


            set
            {
                if (address3 == "")
                {
                    throw new ArgumentException("Please enter your adress");
                }
                else
                {
                    address3 = value;
                }
            }
        }


    }
}

Answer 2

This is an example of simple Windows Forms form that will give you an idea. Basically you would like to store the list of customers in private generic list variable. More about how to use generic and non-generic lists in C# here.

public partial class Form1 : Form
{
    // Initialize private generic list where all customers will be stored at runtime
    private List<Customer> _customers = new List<Customer>();

    private void buttonAddCustomer_Click(object sender, EventArgs e)
    {
        // It might be a good idea to add some validation logic before assigning the input values
        var newCustomer = new Customer();
        newCustomer.Name = this.textBoxName.Text;
        newCustomer.Age = Convert.ToInt32(this.textBoxAge.Text);
        newCustomer.Address1 = this.textBoxAddress1.Text;
        newCustomer.Address2 = this.textBoxAddress2.Text;
        newCustomer.Address3 = this.textBoxAddress3.Text;

        _customers.Add(newCustomer);
    }
}