EXERCISE TOPIC▼
VISUAL BASIC EXERCISES▼
VISUAL BASIC EXERCISES▼
- Drawing forms (2)
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- Variables and data types (2)
- Enumerations and constants (2)
- Form validation (3)
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- Basic DataGridViews (1)
- Reacting to DataGridView events (3)
- Advanced DataGridViews (2)
- Creating classes (4)
- Coding in VB.NET (2)
- Variables and constants (3)
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- Loops (2)
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Visual Basic | Loops exercise | Use VB to loop over combo box items, finding the longest
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.
You can learn how to do this exercise if you attend the course listed below!
Software ==> | Visual Basic (46 exercises) |
Version ==> | Any version of VB |
Topic ==> | Loops (2 exercises) |
Level ==> | Relatively easy |
Classroom ==> | Introduction to VB.NET |
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Press CTRL + D to add the file called frmHobsonsChoice.vb from the above folder into your project (or right click on the project and choose to add it as an existing item).
Change your project's properties to make this the default form for your project. When you run your project, you should see this:

One choice stands out ...
Attach code to the button to loop over all of the items in the combo box (see the sample code below for help on this) and display the longest:

The best things in life? "To crush your enemies, see them driven before you, and to hear the lamentation of their women."
You may find the following lines of code useful as a guide:
'read the combo box items into an array
Dim longestName As String = ""
Dim possibleDate As String
For Each possibleDate In cmbDate.Items
That's it!
I really don't understand the solution to this.
Dim longestName As String = ""
Dim possibleDate As String
For Each possibleDate In cmbDate.Items
'set this to be new longest name if it is!
If possibleDate.Length > longestName.Length Then longestName = possibleDate
Next
I wanted to debug step by step to try and understand what procedure is taking place here, but I can't seem to do so while using the forms application. So I copied and pasted into a console application to debug there, but the program won't run because possibleDate has no initial value. How can this work in the forms application but not in the console? Can someone please help me understand this and maybe explain how to debug step by step in the forms application. Thanks, I'm kinda new.