WISE OWL EXERCISES
VISUAL C# EXERCISES
- Creating forms (4)
- Coding form events (1)
- Laying out your code (2)
- C# variables (4)
- Enumerations and constants (2)
- Conditions (2)
- Modular code (3)
- Arrays (2)
- Looping (2)
- Files and folders (3)
- Properties in C# (3)
- Using lists (3)
- Validating forms (6)
- Toolbars, menus and status bars (1)
- FileDialogs and StreamReaders (1)
- Debugging and trapping errors (1)
- Introduction to DataGridViews (1)
- DataGridView events (3)
- Complex DataGridViews (2)
- Creating classes (4)
- The form as a class (1)
- Data structures (6)
- Inheritance (5)
- Interfaces (2)
- Delegates and events (2)
- Writing LINQ (2)
- Advanced LINQ (2)
- Entity Frameworks (1)
- LINQ with Entity Frameworks (4)
- Grouping using LINQ (2)
- LINQ to SQL (2)
Visual C# | Laying out your code exercise | Creating a custom message box by filling in a form
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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:
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):
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:
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 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.