/// <summary>method <c>DefineClasses</c>
///
/// - Define a class
/// - Declare a new instance of a class
/// - Access properties of an object using dot notation
/// - Use enumerated types
/// </summary>
static void DefineClasses()
{
Console.WriteLine("Defining Classes");
/*
* Classes are a reference type and an object created based off the properties of a class must be instanciated using the new keyword. That object's type is now tied to the class.
*/
PetClass pet1 = new PetClass(); // create a new instance of the class
// define the properties of the new pet object
pet1.Name = "Dakota";
pet1.Age = 9;
pet1.Type = PetType.Dog; // enumerated type define outside of the class
pet1.Trainned = true;
// Access each property of the new pet object using dot notation
Console.WriteLine($"Congrats on your new {pet1.Type}! {pet1.Name} is {pet1.Age} years old. It is {pet1.Trainned} that they are trainned.");
PetClass pet2 = new PetClass();
pet2.Name = "Eddie";
pet2.Age = 4;
pet2.Type = PetType.Cat;
pet2.Trainned = true;
Console.WriteLine($"Congrats on your new {pet2.Type}! {pet2.Name} is {pet2.Age} years old. It is {pet2.Trainned} that they are trainned.");
PetClass pet3 = new PetClass();
pet3.Name = "Bully";
pet3.Age = 1;
pet3.Type = PetType.Dog;
pet3.Trainned = false;
Console.WriteLine($"Congrats on your new {pet3.Type}! {pet3.Name} is {pet3.Age} years old. It is {pet3.Trainned} that they are trainned.");
}
/// <summary>method <c>UsingLinq</c>
///
/// - Define a list of objects
/// - LINQ select statement
/// - ToList method
/// - First or Default method
/// </summary>
static void UsingLinq()
{
Console.WriteLine("Using LINQ Query Operations");
// Define a list of PetClass objects
List <PetClass> petList = new List <PetClass>();
petList.Add(new PetClass {
Name = "Dory", Age = 3, Type = PetType.Fish, Trainned = true
});
petList.Add(new PetClass {
Name = "Taffy", Age = 8, Type = PetType.Dog, Trainned = false
});
petList.Add(new PetClass {
Name = "Midnight", Age = 7, Type = PetType.Cat, Trainned = false
});
petList.Add(new PetClass {
Name = "Ally", Age = 1, Type = PetType.Cat, Trainned = true
});
// return an array of cats from the list of pet objects
List <PetClass> petResults = (from p in petList where p.Type == PetType.Cat select p).ToList();
Console.WriteLine($"There are {petResults.Count} cats in the list of pet objects!");
// return an array of dogs from the list of pet objects
List <PetClass> petResults2 = petList.Where(pet => pet.Type == PetType.Dog).ToList();
Console.WriteLine($"There are {petResults2.Count} dogs in the list of pet objects!");
// return the pet names "Dory" form the list of pet objects
PetClass petResults3 = petList.Where(pet => pet.Name == "Dory").FirstOrDefault();
Console.WriteLine($"{petResults3.Name} has been found");
}
