WISE OWL EXERCISES
C# 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# | C# variables exercise | Use variables to show the length of a phrase
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 one of more of the courses listed below!
| Software ==> | Visual C# (79 exercises) |
| Version ==> | Any version of C# |
| Topic ==> | C# variables (4 exercises) |
| Level ==> | Relatively easy |
| Courses ==> | Introduction to Visual C# / Fast track C# |
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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 frmWordLength.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:
The idea is to attach code to the two buttons so that they do what they say they will!
Attach code to the button on the left so that it creates two variables:
| Variable | Type | Will hold |
|---|---|---|
| phrase | string | The text typed into the box |
| phraseLength | int | The number of characters in the phrase |
Get the button to display two messages in succession:
|
|
| The first message | The second message |
Use Length to show the length of your text. Note that this is a property, not a method, and so doesn't need any brackets after it.
Use Replace to replace every space in the phrase with an empty string ("") to get the second button to work:
Clicking on the second button should display this message for the text typed in here.
You get bonus points for using the Trim() method to remove any leading or trailing spaces from your text before finding out how long it is!
Close down any files that you have open. The preceding sentence had 40 characters in, if you're interested!