Generalt

delegates:

delegate void ShootWeapon();

        static void Main(string[] args)
        {
            ShootWeapon shoot = ShootRifle;
            shoot();
            Console.WriteLine("Changing weapon");
            shoot = ShootPistol;
            shoot();
            Console.ReadKey();

        }

        static void ShootRifle()
        {
            Console.WriteLine("Shooting rifle. 50 damage.");
        }

        static void ShootPistol()
        {
            Console.WriteLine("Shooting pistol. 10 damage.");
        }

enumerations:

enum weapons
        {
            rifle,
            pistol,
            knife
        }

        static weapons currentWeapon;

        static void Main(string[] args)
        {
            currentWeapon = weapons.rifle;
            Shoot();
            Console.WriteLine("Switching weapon");
            currentWeapon = weapons.pistol;
            Shoot();


            Console.ReadKey();
        }

        static void Shoot()
        {
            if(currentWeapon == weapons.rifle)
            {
                Console.WriteLine("Shooting with rifle. 50 damage");
            }
            else if (currentWeapon == weapons.pistol)
            {
                Console.WriteLine("Shooting with pistol. 10 damage");
            }

        }

Statiske klasser En statisk klasse kan til gås alle steder fra vores kode. Husk at lave variablerne sattiske også:

        static void Main(string[] args)
        {
            //Statiske klasser skal ikke instancieres.
            //De kan tilgåes alle steder fra.
            Console.WriteLine(StaticData.staticString);
            Console.ReadKey();
        }
    }

    //Bemærk at jeg har indsat nøgleordet 'static' før 'class' ordet på linjen her under:
    static class StaticData
    {
        public static int staticInt = 100;
        public static string staticString = "Mads";
    }

Begynder hold

Variabler

En variabel er noget som indeholder en værdi. Det kunne eksempelvis være brugerens navn der bliver indtastet i programmet, og gemt i en værdi.

Værdityper er som følgende:

Variabler
Type	værdi
string	"Dette er tekst"
int	9001
float	123.45
bool	true/false

Færdig gør denne lommeregner:

https://drive.google.com/file/d/0B5oDizcmFQ1YZTV4Vm96Z282cTQ/view?usp=sharing

Færdiggør dette spil (Tic Tac Toe):

https://drive.google.com/file/d/0B5oDizcmFQ1YcER5ZF9HU21oQnM/view?usp=sharing

Spiludvikling i WPF

Snapshot (klokken 13): https://drive.google.com/file/d/0B5oDizcmFQ1YRHhmTFE4WHFMQ1k/view?usp=sharing

Snapshot (klokken 14:30): https://drive.google.com/file/d/0B5oDizcmFQ1YdUNrd3dsS1FiMzA/view?usp=sharing

Snapshot (dag 2 klokken 9:10) : https://drive.google.com/file/d/0B5oDizcmFQ1YWUd2am9BTE53cmc/view?usp=sharing

Snapshot (dag 2 klokken 10:10 FINAL) : https://drive.google.com/file/d/0B5oDizcmFQ1YOFk1SkstRkI2OEU/view?usp=sharing

Mads' RTS spil: https://drive.google.com/file/d/0B5oDizcmFQ1YaklBQ3phdGNBT3c/view?usp=sharing

Middel hold

Opgave 1:

Lav en BMI beregner som denne:

http://www.beregnbmi.dk/Default.aspx

Opgave 2:

Lav en lommeregner lignende den som findes i Windows.

For at konvertere en string til en decimal bruges følgende kode:

string input = textBox.Text;
decimal convertedInput = decimal.Parse(input);

Lommeregner eksempel:

https://drive.google.com/file/d/0B5oDizcmFQ1YMzBVMUk3ZUZxbzg/view?usp=sharing

Serializerings eksempel:

            //Opretter et GameData objekt:
            GameData gd = new GameData();
            gd.playerMoney = 100;

            //Hvad vi skal bruge til at serializere:
            XmlSerializer serializer = new XmlSerializer(typeof(GameData));
            StringWriter sWriter = new StringWriter();

            //Serializering af objekt:
            serializer.Serialize(sWriter, gd);

            //Opretter en string med alt XML:
            string myXml = sWriter.ToString();

            //Udskriver XML fil til skrivebordet. BEMÆRK at du skal ændre filstien for at det virker:
            //File.WriteAllText(@"C:\Users\MaKN\Desktop\save.xml", myXml);

            //Indlæsning af XMLfil fra skrivebordet:
            string readXML = File.ReadAllText(@"C:\Users\MaKN\Desktop\save.xml");
            Console.WriteLine(readXML);

            //Deserializering af xmlfil til objekt:
            StringReader sReader = new StringReader(readXML);
            GameData newGD = (GameData)serializer.Deserialize(sReader);

            //Udskriver den nye værdi fra det nye objekt:
            Console.WriteLine("New GameData money value is: "+ newGD.playerMoney);
            Console.ReadKey();

GameData klasse: (husk at lave den public)

    [Serializable]
    public class GameData
    {
        public int playerMoney = 0;
        public int playerUpgrades = 0;
    }

Expert hold

Opgave 1:

Lav et program der kan sende data til en applikation som kan lytte. Benyt gerne UDP.

Opgave 2:

Udvid programmet så programmerne kan både sende og modtage data til hinanden. (et simpelt chat program.)

Listener

            UdpClient client = new UdpClient(11000);
            IPEndPoint endPoint = new IPEndPoint(IPAddress.Any, 11000);

            byte[] recivedArray = client.Receive(ref endPoint);
            string message = Encoding.ASCII.GetString(recivedArray);

            Console.WriteLine("The message was:");
            Console.WriteLine(message);
            Console.ReadKey();

Sender

            string message = "Hello!";
            UdpClient client = new UdpClient();
            IPEndPoint endpoint = new IPEndPoint(IPAddress.Parse("127.0.0.1"), 11000);
            byte[] bArray = Encoding.ASCII.GetBytes(message);

            client.Send(bArray, bArray.Length, endpoint);
            Console.WriteLine("Message has been sent!");
            Console.ReadKey();

Serializering:

            Human joshua = new Human();
            joshua.name = "Joshua";
            joshua.money = 20000;

            XmlSerializer serializer = new XmlSerializer(typeof(Human));
            StringWriter sWriter = new StringWriter();

            serializer.Serialize(sWriter, joshua);

            string myXml = sWriter.ToString();

            Console.WriteLine(myXml);
            Console.ReadKey();

            StringReader sReader = new StringReader(myXml);

            Human newJoshua = (Human)serializer.Deserialize(sReader);
            Console.WriteLine("New Human was created!");

            Console.WriteLine(newJoshua.name);
            Console.WriteLine(newJoshua.money);
            Console.ReadKey();

Opgave:

Send et objekt fra et program til et andet program igennem UDP eller TCP.

SQLite

SQLite eksempel i konsollen:

class Program
    {
        static SQLiteConnection connection;
        static void Main(string[] args)
        {
            Console.WriteLine("Opening database:");
            //SQLiteConnection.CreateFile("myDatabase.db");
            connection = new SQLiteConnection(@"Data Source=C:\Users\MaKN\Desktop\myHeroeDatabase.db");
            connection.Open();
            Console.WriteLine("Connection successfull.");

            //string sqlQuery = "INSERT INTO heroes VALUES ('Iron Man', 42)";
            string sqlSelectQuery = "SELECT * FROM heroes";

            SQLiteCommand command = new SQLiteCommand(sqlSelectQuery, connection);

            command.ExecuteNonQuery();

            SQLiteDataReader reader = command.ExecuteReader();
            while (reader.Read())
            {
                Console.WriteLine("Name: " + reader["name"]);
                Console.WriteLine("Age: " + reader["age"] + "\n");
            }
            connection.Close();
            Console.ReadKey();
        }
    }

SQL commands:

CRUD = Create, Read, Update, Delete.

CREATE table HEROES (name TEXT, age INT)

INSERT into HEROES (name, age) VALUES (‘Batman’, 39)

Select * from HEROES where age > 30;

Update HEROES set name = ‘Buttman’ Where name = ‘Batman’

DELETE from HEROES Where name = ‘Buttman’

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Programmering II Januar 2017

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