Visual Basic | Files and folders exercise | Find text with a FileDialog / StreamReader

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 on the relevant Wise Owl classroom training course (sadly for the moment only in the UK).

Software ==> Visual Basic  (46 exercises)
Version ==> Any version of VB
Topic ==> Files and folders  (1 exercise)
Level ==> Average difficulty
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The aim of this exercise is to find which of the VB code files in the above folder contains the hidden text Kilroy. 

To do this, first create a form containing a single clickable button.  Now write code so that when you click on this button, you get to choose one or more code files (ie use the filter *.vb):

Visual Basic 2010 exercise - Files and folders (image 1)

Make sure you set the MultiSelect property of your FileDialog

When you have selected one or more files, your code should then loop over them looking for the hidden word.  For each file it should:

  • Open the file using a StreamReader object
  • Read through the lines in the file until it finds the text Kilroy, then exit
  • Close the file

Your code should eventually display the name of the file which contains the word Kilroy in the code:

Visual Basic 2010 exercise - Files and folders (image 2)

No spoilers here

When you've got everything working, close down your form!

You can unzip this file to see the answers to this exercise, although please remember this is for your personal use only.
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