static void Main(string[] args)
{
// Create a few contacts
Contact bob = new Contact()
{
FirstName = "Bob",
LastName = "Smith",
Email = "*****@*****.**",
Address = "100 Some Ln, Testville, TN 11111",
};
Contact sue = new Contact()
{
FirstName = "Sue",
LastName = "Jones",
Email = "*****@*****.**",
Address = "322 Other Ln, Testville, TN 11111",
};
Contact juan = new Contact()
{
FirstName = "Juan",
LastName = "Lopez",
Email = "*****@*****.**",
Address = "105 Easy Ln, Testville, TN 11111",
};
// Create an AddressBook and add the Contacts
AddressBook addressBook = new AddressBook();
addressBook.AddContact(bob);
addressBook.AddContact(sue);
addressBook.AddContact(juan);
addressBook.AddContact(sue);
// Create a list of emails that match our Contacts
List <string> emails = new List <string>()
{
"*****@*****.**",
"*****@*****.**",
"*****@*****.**",
};
emails.Insert(1, "*****@*****.**");
foreach (string email in emails)
{
try
{
Contact contact = addressBook.GetByEmail(email);
Console.WriteLine("----------------------------");
Console.WriteLine($"Name: {contact.FullName}");
Console.WriteLine($"Email: {contact.Email}");
Console.WriteLine($"Address: {contact.Address}");
}
catch (NullReferenceException)
{
Console.WriteLine($"{email} not found in you Address Book.");
}
}
}
/*
* 1. Add the required classes to make the following code compile.
* HINT: Use a Dictionary in the AddressBook class to store Contacts. The key should be the contact's email address.
*
* 2. Run the program and observe the exception.
*
* 3. Add try/catch blocks in the appropriate locations to prevent the program from crashing
* Print meaningful error messages in the catch blocks.
*/
static void Main(string[] args)
{
// Create a few contacts
Contact bob = new Contact()
{
FirstName = "Bob", LastName = "Smith",
Email = "*****@*****.**",
Address = "100 Some Ln, Testville, TN 11111"
};
Contact sue = new Contact()
{
FirstName = "Sue", LastName = "Jones",
Email = "*****@*****.**",
Address = "322 Hard Way, Testville, TN 11111"
};
Contact juan = new Contact()
{
FirstName = "Juan", LastName = "Lopez",
Email = "*****@*****.**",
Address = "888 Easy St, Testville, TN 11111"
};
// Create an AddressBook and add some contacts to it
AddressBook addressBook = new AddressBook();
addressBook.AddContact(bob);
addressBook.AddContact(sue);
addressBook.AddContact(juan);
// Try to addd a contact a second time
addressBook.AddContact(sue);
// Create a list of emails that match our Contacts
List <string> emails = new List <string>()
{
"*****@*****.**",
"*****@*****.**",
"*****@*****.**",
};
// Insert an email that does NOT match a Contact
emails.Insert(1, "*****@*****.**");
// Search the AddressBook by email and print the information about each Contact
foreach (string email in emails)
{
Contact contact = addressBook.GetByEmail(email);
Console.WriteLine("----------------------------");
try{ Console.WriteLine($"Name: {contact.FullName}");
Console.WriteLine($"Email: {contact.Email}");
Console.WriteLine($"Address: {contact.Address}"); }
catch {
Console.WriteLine("Oops sorry that contact don't exist silly goose.");
}
}
}
static void Main(string[] args)
{
Contact bob = new Contact()
{
FirstName = "Bob",
LastName = "Smith",
Email = "*****@*****.**",
Address = "100 Some Ln, Testville, TN 11111"
};
Contact sue = new Contact()
{
FirstName = "Sue",
LastName = "Jones",
Email = "*****@*****.**",
Address = "322 Hard Way, Testville, TN 11111"
};
Contact juan = new Contact()
{
FirstName = "Juan",
LastName = "Lopez",
Email = "*****@*****.**",
Address = "888 Easy St, Testville, TN 11111"
};
AddressBook addressBook = new AddressBook();
addressBook.AddContact(bob);
addressBook.AddContact(sue);
addressBook.AddContact(juan);
// Let's see what happens...
addressBook.AddContact(sue);
List <string> emails = new List <string>()
{
"*****@*****.**",
"*****@*****.**",
"*****@*****.**"
};
// Insert an email that does NOT match a contact...
emails.Insert(1, "*****@*****.**");
emails.ForEach(email =>
{
try
{
Contact contact = addressBook.GetByEmail(email);
Console.WriteLine("-----------------------");
Console.WriteLine($"Name: {contact.FirstName} {contact.LastName}");
Console.WriteLine($"Email: {contact.Email}");
Console.WriteLine($"Address: {contact.Address}");
}
catch (NullReferenceException ex)
{
Console.WriteLine($"No contact found with email address: {email}");
}
});
}