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Software ==>	Visual C# (55 exercises)
Topic ==>	Interfaces (2 exercises)
Level ==>	Harder than average
Subject ==>	C# training

Play any game, using an interface to create a common PLAY method

This exercise is provided to allow potential course delegates to choose the correct Wise Owl Microsoft training course, and may not be reproduced in whole or in part in any format without the prior written consent of Wise Owl.

Before you can do this exercise, you'll need to download and unzip this file .

Create a new project called InterfaceGames. Add all of the files in the above folder into your project apart from the images.

Choose to create a resources file - one way to do this is via your project's properties:

Click on the link shown to create a resources file called Resources.resx.

Change the type of this resources file to hold images:

You can now drag the owl images onto this resources file.

You may well need to spend some time resolving compilation errors to do with namespaces and class names before continuing - nothing ever seems to import first time correctly!

Try running the project with 3 different start forms. This is what you should see:

Start form	What you should see
frmStart	A form with two buttons on, to play Countdown or Pairs.
frmCountdownLetters	A form for playing the letters game in Countdown.
frmPairsGame	A form for playing pairs.

Write an interface so that the following code works (note that the games are quite basic, and aren't the point of this exercise)!

private void btnCountdown_Click(object sender, EventArgs e) {

// button to play Countdown

Countdown g = new Countdown();

RunGame(g);

}

private void btnPairs_Click(object sender, EventArgs e) {

// button to play Pairs

Pairs p = new Pairs();

RunGame(p);

}

private void RunGame(IGame game) {

// play any game which implements IGame interface

game.Play();

MessageBox.Show(game.Results);

}

You'll need to create an IGame interface and Countdown and Pairs classes which implement it.

If you have any spare time, you could always improve on the two games' code!

You can unzip this file to see the answers to this exercise, although please remember this is for your personal use only.

You can find other training resources for the subject of this exercise here:

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C# EXERCISES

VISUAL C# EXERCISES

Play any game, using an interface to create a common PLAY method

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