Exercise: Creating a custom message box by filling in a form

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.

The answer to the exercise will be included and explained if you attend the Wise Owl courses listed below!

Category ==> Visual C Sharp 2010  (65 exercises)
Topic ==> Laying out your code  (2 exercises)
Level ==> Average difficulty
Courses ==> WinForms using Visual C#  /  Introduction to Visual C#
Before you can do this exercise, you'll need to download and unzip this file (if you have any problems doing this, click here for help).

You need a minimum screen resolution of about 700 pixels width to see our exercises. This is because they contain diagrams and tables which would not be viewable easily on a mobile phone or small laptop. Please use a larger tablet, notebook or desktop computer, or change your screen resolution settings.

To avoid having to draw the form needed for this exercise, right-click on the name of your project in Solution Explorer then choose Add --> Existing Item... (you can also press SHIFT + ALT + A to do the same thing).

Choose only the file called frmLazyMessageBox.cs in the above folder to import it into your project, then edit Program.cs to make this the default form.  When you run your application, you should now see this:

Lazy message box program

You'll be able to fill in the various parts to get a message box displayed on screen!

Double-click on the Show message button to create event-handling code.  Type in MessageBox.Show( to start a command; Visual Studio will give 21 different argument signatures that you can use (you can click on the black triangles as shown below to move between these):

Message box syntax

The 3rd way to write a message box (out of 21 possible possible syntaxes).

We'll use the syntax above to create a customised message box.  The idea is that the user fills in text in each of the parts of the form:

Filling in message parts

One way to fill in the various parts of the form.

Clicking on the Show message button should then make a suitable message box appear: 

The resulting message box

The message box which should appear for the options shown above.

Remember to include \n in your message to get carriage returns.

When you've written the code to make this work (and tested it), close down any forms that you have open. 

This page has 0 threads Add post