Question

I am working on making an address book in C# 2008. I need to be able to save the contacts and then later display them when the user asked for it. I also need to handle an exception when someone enters an unknown color when writing the person’s favorite color.
This is my code so far:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace Lab02
{
    class Program
    {


        static void Main(string[] args)
        {
            Contact contact = new Contact();

            Console.WriteLine("Please enter the person's name:");
            contact.Name = Console.ReadLine();

            Console.WriteLine("Please enter the person's e-mail address:");
            contact.Email = Console.ReadLine();

            Console.WriteLine("Please enter the person's favorite color:");
            string tempColor = Console.ReadLine();
            contact.Favoritecolor = (System.Drawing.KnownColor)(Enum.Parse(typeof(System.Drawing.KnownColor), tempColor));
            try
            {

            }
            catch 
            {

            }
            finally
            {
                Console.WriteLine("This is an unknown color. Please enter a known color");
            } 
        }
        class Color
        {
            enum clr
            // This is a list of colors for the user to pick from.
            {
                Red,
                Green,
                Blue,
                Yellow,
                Purple,
                Brown,
                Black,
                Crimson,
                White,
                Turqoise,
                Orange,
                Cyan,
                Pink,
                Gold,
                Silver,
                Bronze,
                Gray,
                Indigo,
                Rust
            }
        }
    }
        class Contact
        {
            //This string represents the person's Name.
            public string Name { get; set; }

            //This string represents the person's Email.
            public string Email { get; set; }

            public System.Drawing.KnownColor Favoritecolor 
            {
                get;
                set;
            }
        }
    }

Can anyone help me please?

Answer 1

Why not list all colors that the user can pick, with the Enum Value, then ask them to enter a number, try and convert it to an enum,then store it. If it fails to convert, let them know it’s invalid.

Here’s a little snippet to help. You’ll need to make your enum public however.

Console.WriteLine("Here are a list of colors:");

foreach(Color.clr item in Enum.GetValues(typeof(Color.clr)))
{
    Console.WriteLine(string.Format("{0} - {1}",(int)item,item.ToString()));
}
Console.WriteLine("Please choose your color");
string colorInput = Console.ReadLine();
int colorValue = 0;
if(!int.TryParse(colorInput, out colorValue))
{
        Console.WriteLine(string.Format("{0} is not a valid number",colorInput));
        return;
}

// This will give an error if they've typed a number that wasn't listed
// So need to add a bit of checking here
Color.clr tempColor = (Color.clr)colorValue;

// Your code here