C#

string FirstName = txtFirstName.Text;
     string MiddleName = txtMiddleName.Text;
     string LastName = txtLastName.Text;
     string idNumber = txtIdNumber.Text;
     string eMailAddress = txtEmailAddress.Text;
     string WebSite = txtWebsiteAddress.Text;
     string HomePhone = txtHomePhone.Text;
     string WorkPhone = txtWorkPhone.Text;
     string FaxPhone = txtFaxPhone.Text;
     string MobilePhone = txtMobilePhone.Text;
     bool ContactVerified = chkVerified.Checked;
     bool Tenant = chkTenant.Checked;
     bool Owner = chkOwner.Checked;

     SqlCommand myCommand = new SqlCommand("INSERT INTO contacts (first_name,middle_name,last_name,id_number,home_phone,work_phone,fax_phone,mobile_number,email_address,website_address,contact_verified,tenant,owner)" +
                              "Values ('{0}', '{1}', '{2}', '{3}', '{4}', '{5}', '{6}', '{7}', '{8}', '{9}', '{10}', '{11}', '{12}')", myconnection);

using System;

class Address
{
    public string name;
    public string address;
}

class MethodParams
{
    public static void Main()
    {
        string myChoice;

        MethodParams mp = new MethodParams();

        do
       {
            // show menu and get input from user
            myChoice = mp.getChoice();

            // Make a decision based on the user's choice
            mp.makeDecision(myChoice);

            // Pause to allow the user to see the results
            Console.Write("press Enter key to continue...");
            Console.ReadLine();
            Console.WriteLine();
        } while (myChoice != "Q" && myChoice != "q"); // Keep going until the user wants to quit
    }

    // show menu and get user's choice
    string getChoice()
    {
        string myChoice;

        // Print A Menu
        Console.WriteLine("My Address Book\n");

        Console.WriteLine("A - Add New Address");
        Console.WriteLine("D - Delete Address");
        Console.WriteLine("M - Modify Address");
        Console.WriteLine("V - View Addresses");
        Console.WriteLine("Q - Quit\n");

        Console.WriteLine("Choice (A,D,M,V,or Q): ");

        // Retrieve the user's choice
        myChoice = Console.ReadLine();

        return myChoice; 
    }

    // make decision
    void makeDecision(string myChoice)
    {
        Address addr = new Address();

        switch(myChoice)
        {
            case "A":
            case "a":
                addr.name = "Joe";
                addr.address = "C# Station";
                this.addAddress(ref addr);
                break;
            case "D":
            case "d":
                addr.name = "Robert";
                this.deleteAddress(addr.name);
                break;
            case "M":
            case "m":
                addr.name = "Matt";
                this.modifyAddress(out addr);
                Console.WriteLine("Name is now {0}.", addr.name);
                break;
            case "V":
            case "v":
                this.viewAddresses("Cheryl", "Joe", "Matt", "Robert");
                break;
            case "Q":
            case "q":
                Console.WriteLine("Bye.");
                break;
            default:
                Console.WriteLine("{0} is not a valid choice", myChoice);
                break;
        }
    }

    // insert an address
    void addAddress(ref Address addr)
    {
        Console.WriteLine("Name: {0}, Address: {1} added.", addr.name, addr.address); 
    }

    // remove an address
    void deleteAddress(string name)
    {
        Console.WriteLine("You wish to delete {0}'s address.", name); 
    }

    // change an address
    void modifyAddress(out Address addr)
    {
        //Console.WriteLine("Name: {0}.", addr.name); // causes error!
        addr = new Address();
        addr.name = "Joe";
        addr.address = "C# Station";
    }

    // show addresses
    void viewAddresses(params string[] names)
    {
        foreach (string name in names)
        {
            Console.WriteLine("Name: {0}", name);
        }
    }
}

[XmlElement(typeof(MyClass1),
ElementName = "myClass1"),
XmlElement(typeof(MyClass2),
ElementName = "myClass2"),
XmlElement(typeof(MyClass3),
ElementName = "myClass3"),
XmlElement(typeof(MyClass4),
ElementName = "myClass4")]
public ArrayList Items
{
   get { return _items; }
   set { _items = value; }
}