Chpt. 9 pg 604, prb. 7 E-Mail Address Book (in Visual C#), From Starting Out With Visual C#, Gaddis 4th edition:

I have created a .txt file in Visual Studio with five names, emails and address, called PhoneBook.txt.:

So far only have errors in attempts.

button1 is Create List on the Form, button2 is Exit

using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Windows.Forms; using System.IO; namespace Email_Address_Book { public partial class Form1 : Form { public Form1() { InitializeComponent(); }

private void button1_Click(object sender, EventArgs e) {

}

private void button2_Click(object sender, EventArgs e) {

}

private void listBox1_SelectedIndexChanged(object sender, EventArgs e) {

} } }

Thanks-

7. E-Mail Address Book Create an application with a class named PersonEntry. The PersonEntry class should have properties for a person's name, e-mail address, and phone number. Also, create a text file that contains the names, e-mail addresses, and phone numbers for at least five people. When the application starts, it should read the data from the file and create a PersonEntry object for each person's data. The PersonEntry objects should be added to a List, and each person's name should be displayed in a list box on the application's main form. When the user selects a name from the list box, a second form should appear displaying that person's name, e-mail address, and phone number