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Software ==>	Visual C# (55 exercises)
Topic ==>	Inheritance (5 exercises)
Level ==>	Relatively easy
Subject ==>	C# training

Inherit the Form class to create a custom WinForms form template

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.

Suppose that whenever you create a form, you always set values for certain properties as follows:

Property	Value
StartPosition	System.Windows.Forms.FormStartPosition.CenterScreen
FormBorderStyle	FormBorderStyle.FixedDialog
Text	You set the caption of the form when you first create it.
Height	120, 300 or 500, depending on whether the form is tidgy, mediumish or huge.
Width	200, 400 or 700, depending on whether the form is tidgy, mediumish or huge.

What you'd like to be able to do is to write code like the following:

// create a new template form, setting its caption

FormTemplate ft = new FormTemplate("Wise Owl");

ft.size = FormTemplate.FormSize.Tidgy;

ft.Show();

When you attach this code to a form button and run it, you'd like it to create and show a form on screen:

Clicking on a button in a test form should run this code to display a new form, with the caption, properties and size requested.

To get started, create a new class called FormTemplate, which should include an enumeration to determine the form size:

public enum FormSize

{

Tidgy,

Mediumish,

Huge

}

Your class will need to use the System.Windows.Forms namespace, and should inherit the Form class (so that it will behave like a form, with knobs on).

Add a constructor to your form which takes the form caption as an argument, and within this constructor set the start position, border style and caption.

Add a write-only property called Size which sets the dimensions of the form according to the value of the FormSize enumeration set.

Create the code shown at the start of this exercise to test out your class; running it should bring a form up on screen of the required size and with the required behaviour!

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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